E - Drilling
E - Drilling
E - Drilling
Contents
Drilling
The drilling process .......................................... E3
Drilling .................................................................. E3
E1
Drilling
E2
Drilling
Drilling
The drilling process
Drilling ...
... covers the methods of making cylindrical holes in a workpiece with metal
cutting tools. Drilling is associated with
subsequent machining operations such
as trepanning, counterboring, reaming
and boring. Common to all these processes is a main rotating movement combined with a linear feed. There is a clear
distinction between short hole and deep
hole drilling, the latter being a specialist method for making holes that have
depths of many times (up to 150 times
the diameter see seperate catalogue.)
With the development of modern tools
for short hole drilling, the need for preparatory and subsequent machining has
changed drastically. Modern tools have
led to solid drilling being carried out in
a single operation, normally without any
previous machining of centre and pilot
holes. The hole quality is good, where
subsequent machining to improve the
measurement accuracy and surface texture is often unnecessary.
The drilling process can in some respects be compared with turning and milling but the demands on chipbreaking and
the evacuation of chips is critical in drill-
Drilling
Trepanning
Counterboring
Reaming
E3
Drilling
Cutting data
Machining holes
Holes are either made or nish machined.
Most workpieces have at least one hole
and depending upon the function of the
hole, it needs machining to various limitations. The main factors that characterize
a hole from a machining point of view are:
-
diameter
depth
quality
material
conditions
reliability
productivity
fn
vf
HB
Ra
vc
Cutting speed, penetration rate, spindle speed and feed per revolution.
E4
Drilling
r
D
E5
Drilling
E6
Drilling
Many drills are available with different mounting options. Find the style compatible with the
machine.
E7
Drilling
Selecting drills
Coromant Delta C
Coromant Delta
E8
Drilling
Large-diameter holes
Only indexable insert drills are available
for what is designated here as large diameter holes and the choice of tool is
primarily concerned with choosing the insert geometry and grade. When the machine power is limited, trepanning drills
are used instead of solid drills.
F
Solid carbide drills to indexable insert trepanning tools cover hole diameters from 0.3 to 110 mm for short
hole drilling.
E9
Drilling
CoroDrill
Delta C
Step / chamfer
R840
R850
R841
Coromant
Delta
CoroDrill
880
R411.5
Chamfer
Drill depth
Material
Dc 1.5 20.00 mm
Dc 5.00 14.00 mm
Dc 3.00 16.00 mm
Dc 9.50 30.40 mm
Dc 14 29.5 mm
2 5 Dc
2 7 Dc
2 3 Dc
3.5 5 Dc
2 4 Dc
P M K
P M K
P M K
K N
S H N
P M K
S
H N
H N
Hole tolerance
IT8-10
IT8-10
IT8-10
Surface finish Ra
12 m
12 m
14 m
15 m
???
???
???
???
General
drilling
???
D
Versatility
??
???
?
???
???
??
??
???
???
?
???
G
*) By presetting.
Material
P
Steel
Stainless steel
Cast iron
Aluminium
Super alloys
Hardened steel
E 10
???
??
?
= Very good
= Good
= Fair
Radial adjustment
Cross hole
Stackdrilling
Plunge drilling
Trepanning
Drilling
Coromant U
Coromant U
T-MAX U
stackdrill
R416.21
Plunge drill
T-MAX U 60 mm
Solid
R416.01
Trepanning
R416.9
R416.7
R416.22
A
Dc 12.7 58 mm
Dc 27 59 mm
Dc 60 80 mm
Dc 60 110 mm
Dc 12.7 35 mm
2.3 Dc
2.5 Dc
2.5 Dc
2.5 Dc
4 Dc
P M K
P M K
P M K
P M K
P M K
P M K
S H
S H
2 5 Dc
H N
H N
H N
IT13
IT11 *)
IT13
IT11 *)
0.2
0.2
0.2
0.20
15 m
15 m
27 m
27 m
27 m
15 m
G
*) By presetting.
Material
P
Steel
Stainless steel
Cast iron
Aluminium
Super alloys
Hardened steel
= Very good
= Good
= Fair
Chamfer drilling
Step drilling
Boring
E 11
Drilling
PMKNSH
PMKNSH
PMKN (S) H
F
Diameter range 9.50 30.40 mm
Drill depth 2-5 x D
Cylindrical with at/CWN shanks
Superior hole tolerance and surface nish
Suitable for unstable conditions
Tailor made options
E 12
Drilling
T-Max U 60 mm drill
Exchangeable cartridges
Diameter range 60 80 mm
Drill depth 2.5 x diameter
E 13
Drilling
Application of drills
Solid cemented
carbide twist-drills
A
CoroDrill Delta-C
R840: rst choice for general drilling
(1.5 20 mm diameters)
E 14
Drilling
TIR
E 15
Drilling
Deeper holes with external coolant supply. Usually drilling of a hole can
be performed in one single step. But if deep holes are drilled (more than
3 x D), using external uid supply, one third of the depth can be drilled
continuously followed by a peck drilling cycle. But peck drilling of deep
holes should be problem solver only.
Peck drilling cycle: After drilling one third of the depth, the drill is lifted
sufcient for chip evacuation, cleaning of the hole and then followed by
repeated drilling cycles.
C
Inclination smaller than 5: cutting action is intermittent. The feed should
be reduced to 1/3 of normal feed rate until cutting full diameter.
F
Inclination of 510: start by performing a centering operation with a
short drill with the same point angle. Alternatively, mill a small at.
Inclination larger than 10: drilling is not possible unless the entry surface is prepared.
E 16
Drilling
Convex surfaces: are possible to drill if the radius is larger than 4 times
the drill diameter and the hole is perpendicular to the radius. The feed
should be reduced to a half of normal rate when entering.
Cross-hole drilling: can be made if the feed is reduced to a quarter of normal rate when entering and exiting the cross hole.
E
Stack drilling: drilling of more than one workpiece-plate at a time is possible with full feed providing the following measures are taken:
- good clamping of the plates, especially since plates are generally not perfectly at. A common practise is to put industrial paper (thickness approx.
0.51 mm) between the plates. This levels out irregularities and dampens
vibrations.
A further benet for including paper is to keep the chips in place and also
to protect the drill from being damaged by the end disc, formed at the exit
of each plate. If possible, the plates should also be secured and clamped
in the centre before drilling starts.
E 17
Drilling
With an external cutting uid supply, improper chip evacuation can occur if the
cutting uid nozzle is not properly directed onto the periphery of the tool in line
with the ute spiral. This condition can
lead to blue or brown chips, undersized
holes, drill breakage or wear on the guiding chamfers of the drill.
To optimize chip evacuation, at least one
cutting uid jet (two if drill is stationary)
must be directed at a slight angle to the tool axis.
3xD 5xD
0.6 1.0
5
4
0.5 0.8
3
H
0.4 0.6
0.3 0.4
5
Volume
E 18
10
15
20 Dc mm
5
Pressure
10
15
20 Dc mm
Drilling
Cutting data
Effects of cutting speed:
the main factor in determining tool-life
affects power consumption
Excessive cutting speed can lead to:
rapid ank wear on drill
plastic deformation of cutting edges
poor hole quality
out of tolerance
E 19
Drilling
Collet practice:
use sealed collets in combination with internal cutting
uid supply.
carry out collet and tool maintenance frequently.
replace worn and damaged collets with new ones.
B
Good quality chucks are vital for accurate.
C
Maintenance
E 20
Drilling
Cause
Solution
temperature
3. No coating
ting uid
cutting uid
Built up edge
1. Unstable xturing
1. Check xture
3. Intermittent cutting
cracking)
5. Unstable toolholding
Chipping on the cutting edge
corner
E
Large wear on the cutting edge
1. Unstable conditions
4. Abrasive material
E 21
Drilling
Problem
Cause
Solution
2. Lower feed
3. Check dimensions
3. Unsuitable drill/grade
volume
3. Use a harder grade
E
Drill breakage
1. Insufcient clamping
2. Workpiece is moving
2. Improve clamping
4. Check machine
5. Chip jamming
7. Excessive wear
H
Thermal cracks (Notches)
E 22
Drilling
How to identify and rectify workpiece errors when drilling with Delta-C drills.
Problem
Cause
Solution
2. Improve TIR
5. Reduce feedrate
Ra
1. Unstable conditions
2. Improve TIR
F
Bad surface finish
3. Check regrinding
4. Improve TIR
H
Hole is too big
E 23
Drilling
Wear denition
Coromant Delta-C
Flank
Zone
Drill
centre
Drill diameter
Flank wear
VB mm
Crater wear
KB mm
Zone
Dc mm
3.00
6.01
10.01
14.01
17.01
6.00
10.00
14.00
17.00
20.00
1
0.20
0.20
0.25
0.25
0.30
Zone
2
0.20
0.20
0.25
0.25
0.30
3
0.20
0.25
0.25
0.30
0.35
1
0.20
0.25
0.30
0.30
0.35
2
0.20
0.25
0.30
0.30
0.35
3
0.20
0.25
0.30
0.30
0.35
Circular land
Face
In ISO K-materials, performance can be improved by adding
corner chamfers to the drill 0.54.0 mm x (20-45). In ISO Hmaterials, a corner radius can be added to slow down the wear
rate. r = 0.2Dc/10 mm.
E 24
Drilling
Difcult
GC
1220
50
GC
1220
GC
N20D
GC
1220
H
Hardened materials
40
GC
1220
Steel
30
N
GC
1210
GC
1210
20
Average
conditions
Aluminium / Non-ferrous
10
Cast iron
Good
Stainless steel
01
Wear resistance
GC
1220
GC
1220
Toughness
Futura Nano
Balinit TiAlN. General coating for harder steels 35-55 Rc.
Good abrasive wear resistance and medium toughness. Allows
higher speeds and dry/semi-dry conditions.
Application: Steel, stainless, C.I., non-ferrous, HRSA and
titanium.
Futura Top
Balinit TiAlN. General coating with good abrasive wear resistance and medium toughness. Very smooth surface nish
giving low adherence from work material on the cutting edge.
Recommended for R850-Al drill.
Application: Steel, stainless, C.I., non-ferrous, HRSA and
titanium.
HardLube
Balinit TiAlN + WC/C. "Low friction" coating, promotes good
chip evacuation and temperature control.
Application: Low carbon steel, HRSA-material, cobalt-chrome.
Difcult to machine materials. Problem solver.
E 25
Drilling
New
Coromant
grade
CMC
No
Cutting
speed vc
m/min
HB
Drill diameter, mm
3.006.00
6.0110.00
10.0114.00 14.01-20.00
Feed fn mm/r 3)
Unalloyed steel
01.0
125
01.1
125
01.2
150
C = 0.05-0.10%
C = 0.10-0.25%
C = 0.25-0.55%
1220
1220
1220
80-140
80-140
80-140
0.10-0.25
0.10-0.25
0.10-0.25
0.15-0.34
0.15-0.34
0.15-0.34
0.20-0.40
0.20-0.40
0.20-0.40
0.22-0.45
0.22-0.45
0.22-0.45
01.3
C = 0.55-0.80%
1220
70-130
0.10-0.25
0.15-0.34
0.20-0.40
0.22-0.45
170
1220
70-120
0.10-0.25
0.15-0.34
0.20-0.40
0.22-0.45
Non-hardened
Hardened and tempered
Hardened and tempered
1220
1220
1220
70-120
70-100
50-80
0.10-0.20
0.10-0.20
0.10-0.20
0.14-0.30
0.14-0.30
0.14-0.25
018-0.35
018-0.35
018-0.35
0.20-0.40
0.20-0.40
0.20-0.38
Annealed
Hardened tool steel
1220
1220
40-80
40-70
0.08-0.14
0.08-0.14
0.10-0.22
0.10-0.22
0.14-0.25
0.12-0.25
0.16-0.32
0.18-0.28
Unalloyed
Low-alloy (alloying elements <5%)
1220
1220
70-130
70-120
0.10-0.20
0.10-0.20
0.15-0.34
0.15-0.34
0.20-0.40
0.20-0.40
0.22-0.45
0.22-0.45
Stainless steel
05.11
200
Non-hardened / Ferritic/Martensitic
05.21
Austenitic
1220
1030
1220
1030
40-801)
35-601)
40-801)
35-601)
0.08-0.14
0.08-0.14
0.08-0.14
0.08-0.14
0.08-0.20
0.10-0.22
0.08-0.20
0.10-0.22
0.12-0.22
0.14-0.28
0.12-0.22
0.14-0.28
0.14-0.24
0.16-0.30
0.14-0.24
0.16-0.30
1220
1030
40-801)
35-60
0.08-0.14
0.08-0.14
0.08-0.20
0.10-0.22
0.12-0.22
0.14-0.28
0.14-0.24
0.16-0.30
1220
1220
1220
10-25
10-25
10-25
0.06-0.12
0.06-0.12
0.06-0.12
0.08-0.15
0.08-0.15
0.08-0.15
0.08-0.15
0.08-0.15
0.08-0.15
0.10-0.16
0.10-0.16
0.10-0.16
1220
1220
20-60
20-60
0.06-0.12
0.06-0.12
0.08-0.20
0.08-0.20
0.14-0.28
0.14-0.28
0.16-0.30
0.16-0.30
1220
1220
90-150
70-130
0.15-0.30
0.15-0.25
0.25-0.40
0.20-0.35
0.35-0.60
0.30-0.55
0.40-0.60
0.35-0.55
1220
1220
90-150
70-130
0.15-0.30
0.15-0.25
0.25-0.40
0.20-0.35
0.35-0.60
0.30-0.55
0.40-0.60
0.35-0.55
1220
1220
80-110
70-100
0.15-0.30
0.15-0.25
0.25-0.40
0.20-0.35
0.35-0.60
0.30-0.55
0.40-0.60
0.35-0.55
1220
1220
30-50
15-25
0.06-0.10
0.06-0.10
0.08-0.12
0.08-0.12
0.10-0.15
0.10-0.15
0.12-0.18
0.12-0.18
1220/N20D
1220/N20D
120-230
120-230
0.15-0.25*
0.15-0.25*
0.20-0.40*
0.20-0.40*
0.30-0.50*
0.30-0.50*
0.40-0.60*
0.40-0.60*
1220/N20D
1220/N20D
90-150
90-150
0.15-0.25*
0.15-0.25*
0.20-0.40*
0.20-0.40*
0.30-0.50*
0.30-0.50*
0.40-0.60*
0.40-0.60*
Steel castings
06.1
06.2
180
200
180
Stainless steel
15.21
200
Austenitic castings
250
350
320
Titanium alloys
23.21
23.22
Rm 2) = 850
Rm 2) =1050
43-47 HRc
47-60 HRc
Aluminium alloys
30.11
30.21
60
75
110
90
1) Internal cutting uid supply is recommended when drilling stainless steel as a good
supply of coolant at the cutting edges is essential for chip evacuation and tool life.
2) Rm = ultimate tensile strength measured in MPa.
3) Higher feeds should be used in stable and favourable machining conditions.
E 26
Drilling
Feed force
Ff = 0.5 Dc fn kcfz sinr [N]
2
Ff
[kN]
5
l/min
q
10
Min
5
4
0
0
10
12
14
16
18
20
Dc [mm]
Drill diameter
10
15
20 Dc [mm]
Drill diameter
Net power
Pc
[kW]
5
Pc =
Dc fn kcfz vc
[kW]
240 x 103
4
3
2
1
0
0
10
12
14
16
18
20
Dc [mm]
Drill diameter
Note that only net power ratings are given. Allowance must be
made for the efciency of the machine and the cutting edge
wear.
Machining recommendations
Stainless Steel
Aluminium
Use the highest coolant pressure/quantity available. Rich mixture will improve performance.
Steel
First choice in general steel material is type R840 grade 1220.
Drills with both internal and external coolant supply is available.
Also possible to drill in hardened steel up to 60 HRC with this
grade. When drilling hard material material use shortest possible ute length.
E 27
Drilling
WN
A
2 = Chamfer drill with extended shank, Dc1 = 3.016.0 mm
WN
CYL
Coolant supply
External
3 = Standard type with extended shank, Dc1 = 3.020.0 mm
CYL
WN
Internal
Shank type
C
4 = Step drill, Dc1 = 3.016.0 mm
CYL
WN
WN
Cylindrical CYL
Whistle Notch WN
Options
F
Dc1
Drill type
Carbide grade
Tolerance
Diameter 3.020.0 mm
1. 3 Dc1 = 3.020.0 mm/2. 4. 5 Dc1 = 3.016.0 mm
l4a
l4b
GC1220 or modied
h8/js8/m8 for drill type 4, 5
l4
pa3
ch
Tolerance
pa1
pa2
Coating type,
(modied)
Helix angle
(type 1)
Back taper
Circular land
Corner Mod.
Corner radius r
Corner chamfer
E 28
Mounting
type
dmm
D21
Coolant supply
l21
l2
Dc2
Drilling
Drill specications
CoroDrill Delta-C
2 3 Dc R 840
Cylindrical shank
r 70
3.00-20.00 mm
2-3 x Dc
TiN/ TiAIN multilayer
IT8-9
Ra 1-2 m
Emulsion or cutting oil
DIN 6537
dmm = h6
Dc = m7:
Dc 3
+0.012/+0.002
Dc 3 6
+0.016/+0.004
Dc 610
+0.021/+0.006
A
Internal coolant supply
B
l4 = recommended drilling depth
4 5 Dc R 840
Cylindrical shank
r 70
3.00-20.00 mm
4-5 x Dc
Coating:
Hole tolerance:
IT8-9-10
Surface finish:
Ra 1-2 m
Cutting fluid:
Drill standard:
DIN 6537
Tolerances:
dmm = h6
Dc
Dc
Dc
Dc
C
Internal coolant supply
= m7:
3
+0.012/+0.002
3 6 +0.016/+0.004
610 +0.021/+0.006
l4 = recommended drilling depth
6 7 Dc R 840
Cylindrical shank
r 70
Drill diameter:
5.00-14.00 mm
6-7 x Dc
Coating:
Hole tolerance:
IT8-9-10
Surface finish:
Ra 1-2 m
Cutting fluid:
Drill standard:
DIN 6537
Tolerances:
dmm = h6
Dc = m7:
Dc 36 +0.016/+0.004
Dc 610 +0.021/+0.006
l4 = recommended drilling depth
2 3 Dc R 840
Whistle Notch shank
r 70
3.00-20.00 mm
2-3 x Dc
Coating:
Hole tolerance:
IT8-9-10
Surface finish:
Ra 1-2 m
Cutting fluid:
Drill standard:
DIN 6537
Tolerances:
dmm = h6
Dc
Dc
Dc
Dc
= m7:
3
+0.012/+0.002
3 6 +0.016/+0.004
610 +0.021/+0.006
E 29
Drilling
Drill specications
CoroDrill Delta-C
4 5 Dc R 840
Whistle Notch shank
r 70
Drill diameter:
Max hole depth:
Coating:
Hole tolerance:
Surface nish:
Cutting uid:
Drill standard:
Tolerances:
5.00-20.00 mm
4-5 x Dc
TiN/ TiAIN multilayer
IT8-9-10
Ra 1-2 m
Emulsion or cutting oil
DIN 6537
dmm = h6
Dc = m7:
Dc 3 6
+0.016/+0.004
Dc 610
+0.021/+0.006
B
l4 = recommended drilling depth
2 3 Dc R 841
C
r 70
Drill diameter:
Max hole depth:
Coating:
Hole tolerance:
Surface nish:
Cutting uid:
Drill standard:
Tolerances:
3.3514.50 mm
23 x Dc
TiN/ TiAIN multilayer
IT89
Ra 12 m
Emulsion or cutting oil
DIN 6537
dmm = h6
Dc = m8:
Dc 36
+0.022/+0.004
Dc 610
+0.028/+0.006
Dc 1018
+0.034/+0.007
2 - 3 Dc R 850
E
Aluminium
100
Drill diameter:
Max hole depth:
Coating:
Hole tolerance:
Surface nish:
Cutting uid:
Drill standard:
Tolerances:
5.00-14.00 mm
2-3 x Dc
TiAIN extra surface nish
IT8-9-10
Ra 1-2 m
Emulsion or cutting oil
DIN 6537
dmm = h6
Dc = m7:
Dc 36
+0.016/+0.004
Dc 610
+0.021/+0.006
6 - 7 Dc R 850
Aluminium
100
Drill diameter:
Max hole depth:
Coating:
Hole tolerance:
Surface nish:
Cutting uid:
Drill standard:
Tolerances:
5.00-14.00 mm
6-7 x Dc
TiAIN extra surface nish
IT8-9-10
Ra 1-2 m
Emulsion or cutting oil
DIN 6537
dmm = h6
Dc = m7:
Dc 36
+0.016/+0.004
Dc 610
+0.021/+0.006
E 30
Drilling
E 31
Drilling
WN
Coolant supply
External
A
Internal
2 = Chamfer drill with extended shank, Dc1 = 3.016.0 mm
WN
CYL
Shank type
Cylindrical CYL
Whistle Notch WN
3 = Standard type with extended shank, Dc1 = 3.020.0 mm
CYL
WN
CYL
WN
WN
C
4 = Step drill, Dc1 = 3.016.0 mm
Options
F
Dc1
Drill type
Carbide grade
Tolerance
Diameter 3.020.0 mm
1. 3 Dc1 = 3.020.0 mm/2. 4. 5Dc1 = 3.016.0 mm
pa3
l4b
l4
l4a
l21
l2
Dc2
pa2
E 32
Coating type,
(modied)
I = Internal
ch
Tolerance
Mounting
type
dmm
D21
Coolant supply
Back taper
Std, Large
Drilling
A
5 Dc
Drill
diameter
Field of
application
Ordering code
For removal of
broken taps
Dimensions, mm
To remove taps
B
Dc mm
2
3
4
5
6
HC2
HC3
HC4
HC5
HC6
l2
l3
dmm
30
40
45
50
60
10
15
20
25
30
2
3
4
5
6
M3
M4, M5
M6
M8, M10
M10, M12
Geometry
The extra negative geometry produces a high working temperature anneales the tap.
Regrindable geometry.
No cutting uid is required drill dry.
Application
Drills are primarily designed for removal of broken taps, hardened
bolts etc.
Can also be used for drilling in other difcult materials e.g. chilled
cast irons, stellite and glass.
E
Use machines with a stable spindle.
FMS (exible machining system), M/C:s, NC and NC-lathes, CNC,
automatics, centre and turret lathes and milling machines.
F
Operating procedure when drilling
1. Securely clamp the workpiece
on the machine table in a vice or
similar rigid work-holding xture.
Centre the drill on the broken tap.
E 33
Drilling
Coromant Delta drill makes precision holes with high productivity and relatively small cutting forces.
E 34
Drilling
Max 0.02 mm
C
Drilling with holder and housing for cutting
uid supply
When using a holder with a housing for cutting uid supply a rotating stop to prevent the housing from rotating must be used.
Rotating stop
Limitations
Drilling against non at surfaces or drilling workpieces with cross holes is possible
if the feed is reduced to 1/3 1/4 of recommended values.
E 35
Drilling
A
Ordering code
Drill diameter
Dc mm
9.50-14.00
14.01-17.00
17.01-30.40
5691 020-01
5691 020-02
5691 020-03
Flank wear
VB mm
Crater wear
KB mm
Zone
Dc mm
1
0.25
0.25
0.30
0.30
0.35
9.50 - 14.00
14.01 - 17.00
17.01 - 20.00
20.01 - 24.00
24.01 - 30.40
Zone
2
0.25
0.25
0.30
0.30
0.35
3
0.25
0.30
0.30
0.40
0.45
E
Coromant Delta
Wear denition
Zone
Drill centre
KB
Flank
VB
Circular
land
E 36
Negative
chamfer
Face
1
0.30
0.30
0.35
0.35
0.40
2
0.30
0.30
0.35
0.35
0.40
3
0.30
0.30
0.35
0.35
0.40
Drilling
20
Average
conditions
Steel
10
P20
30
K20
40
Difcult
K20
K20
Hardened materials
Aluminium / Non-ferrous
Good
Cast iron
01
Stainless steel
Wear resistance
K20
Toughness
Grades
Balinit HARDLUBE
Low friction coating for long
chipping materials
H10F
Fine grain carbide. In combination
with Hardlube coating optimized for
stainless steel.
E 37
Drilling
CMC
No.
Material
Grade
Cutting
speed
Drill diameter, mm
9.50-14
vc m/min
HB
01.0
01.1
Unalloyed steel
01.2
01.3
01.4
0.10-0.25% C
Non-hardened
0.25-0.55% C
Non-hardened
0.55-0.80% C
02.1
02.2
03.11
03.22
06.1
06.2
Steel castings
05.11
Non-hardened
Hardened
Annealed
Hardened steel
Unalloyed
80-170
90-200
125-225
150-225
180-225
P20
150-260
220-400
P20
150-250
250-400
P20
90-225
P20
Feed fn mm/r
75-100
0.14-0.22
0.15-0.25
0.18-0.31
70-90
0.15-0.23
0.18-0.26
0.20-0.30
55-90
0.14-0.22
0.18-0.26
0.20-0.28
35-65
0.14-0.22
0.15-0.25
0.18-0.26
40-70
0.15-0.20
0.18-0.25
0.20-0.27
40-60
0.15-0.20
0.17-0.20
0.18-0.24
70-90
0.17-0.23
0.19-0.25
0.20-0.26
50-75
0.15-0.21
0.17-0.23
0.19-0.25
25-55
0.14-0.21
0.17-0.24
0.18-0.27
25-55
0.14-0.201)
0.16-0.231)
0.19-0.251)
75-120
0.15-0.26
0.18-0.30
0.21-0.39
75-110
0.15-0.25
0.16-0.29
0.18-0.35
85-115
0.19-0.31
0.23-0.39
0.26-0.46
55-100
0.19-0.30
0.24-0.36
0.28-0.44
65-105
0.16-0.26
0.20-0.35
0.23-0.41
55-95
0.15-0.25
0.18-0.33
0.21-0.39
0.10-0.15
0.12-0.17
0.15-0.20
150-250
Stainless steel
150-270
05.21
Stainless steel
150-270
07.1
07.2
Malleable cast
iron
110-145
150-270
K20
08.1
08.2
150-220
200-330
K20
09.1
09.2
125-230
200-300
K20
04.1
HRC
43-47
47-60
P20
30.12
75-150
40-100
K20
95-150
0.21-0.33
0.18-0.41
0.18-0.41
50-160
K20
45-150
0.16-0.29
0.20-0.35
0.25-0.44
0.05-0.10% C
Non-hardened
33.1
33.2
Ferritic
Pearlitic
Aluminium alloys
30.21
Copper and
copper alloys
K20
K20
25-40
15-30
H
1)
17.01-30.40
Non-hardened
14.01-17
If chip control is difcult to achieve with the recommended cutting data, reduce the feed to 0.08 - 0.10 mm/rev.
E 38
Drilling
Net power
Ff = 0.5 Dc fn kcfz sinr [N]
2
(Only for solid drilling)
Ff
[kN]
8
kW
8
0
0
10
15
20
30 Dc [mm]
Drill diameter
25
Dc fn kcfz vc
[kW]
240 x 103
(Only for solid drilling)
Pc =
B
0
10
15
20
25
30 Dc [mm]
Drill diameter
Cutting uid ow
[l/min]
q 16
14
12
Min
10
8
6
4
2
0
10
15
20
25
30
Dc [mm]
Drill diameter
Note that only net power ratings are given. Allowance must be
made for the efciency of the machine and the cutting edge
wear.
E 39
Drilling
Mounting type
Cylindrical
with at
P M K H N
Dc
9.50-30.40
16, 20 , 25, 32
Cylindrical
Coromant
Whistle Notch
16, 20, 25
A
Cylindrical with atCYLPF
CylindricalCYL
B
2= Drill with chamfering insert, Dc = 12.25-30.40 mm
C
3= Drill with pilot, Dc = 9.50-30.40 mm
Options
F
Dc
Diameter9.50-30.40 mm
Drill type
ch
l3s
D21
type 3 and 4
l21
type 3 and 4
D1
Flange diameter15-32 mm
l1s
l2
Type 216.4-134.8 mm
l6
Type 3 9.9-116.8 mm
Type 416.4-116.8 mm
Mounting
type
Cylindrical shankCYL,
Coromant Whistle NotchCWN
dmm
E 40
grade
Coating
Drilling
10
11
2.5 0.1
r=1
P M K H N
90 15
45 20
4 0.04
0.4 0.1 45
0
5 -0.02
0
4 -0.2
Ordering code
Spare parts
Insert
H10F
6 0.2
L142.01-05 06 00
3113 030-304
Coromant
grade
Building in dimensions
E
4 0
+0.2
0.2 0.1 45
5H8
2H8
2.1
l4
2.5 0.03
ch (45)
l21 = l4 + 2.1 - ch
l21
Dc
l4
l21 = l4 + 2.1 - ch
l21
l4
ch max
E 41
Drilling
Drill specications
Coromant Delta
3.5 Dc R 411.5
Cylindrical shank with at according to ISO 9766
r 70
Drill diameter:
Hole depth:
Hole tolerance:
Surface nish:
Cutting uid:
Tolerances:
9.50-30.40 mm
3.5 Dc
IT8-9
Ra 1-2 m
Emulsion or
Neat oil
Dc = js7
dmm = h6
l4 = Recommended drilling depth
5 Dc R 411.5
Cylindrical shank with at according to ISO 9766
C
r 70
Drill diameter:
Hole depth:
Hole tolerance:
Surface nish:
Cutting uid:
Tolerances:
9.50-20.00 mm
5 Dc
IT9-10
Ra 2-4 m
Emulsion or
Neat oil
Dc = js7
dmm = h6
l4 = Recommended drilling depth
3.5 Dc R 411.5
E
r 70
Drill diameter:
Hole depth:
Hole tolerance:
Surface nish:
Cutting uid:
Tolerances:
9.50-30.40 mm
3.5 Dc
IT8-9
Ra 1-2 m
Emulsion or
Neat oil
Dc = js7
dmm = h6
5 Dc R 411.5
Whistle Notch shank
r 70
Drill diameter:
Hole depth:
Hole tolerance:
Surface nish:
Cutting uid:
Tolerances:
9.50-20.00 mm
5 Dc
IT9-10
Ra 2-4 m
Emulsion or
Neat oil
Dc = js7
dm = h6
l1s = Programming length
l4 = Recommended drilling depth
E 42
Drilling
CoroDrill 880
With their increased capability to produce closer tolerances and better surface nish, the indexable insert drill is a
very versatile tool as regards materials,
machinery and operation.
Hole depths: up to 4 times the drill diameter (5 for Tailor made drills)
Workpiece materials: all kinds
Hole tolerances: generally 0.1/+ 0.3
mm but CoroDrill 880 provides a
0/+ 0.25 mm tolerance, when used in
nishing operation tolerances within
E 43
Drilling
Application hints
E 44
size. In fact, various types of repositioning often lead to dimensional and alignment deviations being eliminated.
When the workpiece and drill are out of
true, due to inaccuracy in the machine,
Drilling
Possibilities with a stationary drill. (Operation C not possible with CoroDrill 880)
F
Improving stability of stationary drill by turning the drill.
E 45
Drilling
A
A
Various type of initial penetration in drilling operations. All but A need initial feed reductions.
B
Initial drill penetration ...
C
With a concave surface (C) the drill engagement varies depending on the radius
of the concave surface and the diameter
of the hole in relation to the height of the
drill point, If the radius of the concave surface is small in relation to the hole diameter, the periphery of the drill will be engaged rst. To reduce the tendency for
the drill to deect, the feed rate should be
reduced to a third of that recommended.
E
Irregular surface need feed reductions and pre-drilled holes should not be larger than 25% of drill diameter.
E 46
Drilling
A
G
Multi-diameter hole drilling should be carried out in the right order.
B
When making a multi-diameter hole (different diameters in the same hole), (G) it
should be noted that drills are generally
not designed for counterboring, which is
the process involved. Conventional twistdrills do not provide sufcient accuracy
and modern, self-centering twist-drills have
too much room for deviation when seeking
the centre, which results in oval holes. If
indexable insert drills with asymmetric
geometry are used, deection of the drill
can take place. These problems can be
remedied in certain cases by reducing the
feed, but the procedure of drilling the largest hole rst, then the smaller one is rec-
Drilling crossing holes should be carried out according to operations 1 and 2. Stability of the drill is essential.
E 47
Drilling
A number of factors that affect the quality of holes drilled should be looked at
when hole quality levels are high:
- the machine tool needs to be in a good
condition. Wear and misalignment in the
spindle will affect accuracy. Stability generally is important.
- the condition of the drill should be monitored regularily throughout its tool-life to establish a safe and predictable tool-life. Unsuitable tool wear and any risk of cutting
edge breakdown should be eliminated.
- chipbreaking and chip evacuation must
always be satisfactory.
- choice and setting of drill type and insert geometry affect quality of holes.
- as regards obtaining high straightness
accuracy, especially for deeper holes, the
best result is obtained when both the
workpiece and drill rotate. Alternatively, a
rotating workpiece with a stationary tool
is satisfactory.
E 48
Drilling
0.15
0.1
A
B
Setting stationary trepanning tools.
C
E
Core handling in trepanning.
E 49
Drilling
Cutting uid
E 50
q
[l/min]
60
20
15
10
5
50
12.7
20
40
30
c.
Re
20
Min
10
0
12.7 20
30
40
50
60
70
80
q
[l/min]
70
60
c.
Re
50
40
in
30
20
0
0
60
70
80
90
100
110 Dc [mm]
Dc [mm]
Drilling
Insert wear
Chipping of cutting edges can be caused
by various circumstances:
- off-centre drill
- drill deection caused by excessive
tool overhang, feed rate or drill length
- poor insert stability due to incorrect
seating in drill or damaged seat and
screws
- poor drill stability due to wrong tool
holding, poor spindle or turret condition and alignment
- poor machine and workpiece stability
- cutting uid supply insufcient
- incorrect inserts, grade or geometry
not suitable for demands at centre and
peripheral cutting edges
A
Chipping
B
Flank wear
Creater wear
F
Drill adaptor for silent drilling
To improve the work environment this patented dampened adaptor has been developed and it should be used with Coromant U indexable insert drills in specic
applications where high pitch noise is a problem.
E 51
Drilling
Make sure which insert cutting edge leads the drill. Measure at end of drill to see which insert protrudes furthest
axially, to establish the point position of the drill for programming.
Start drilling with the minimum recommended feed rate
for the drill in question, to a depth of just a few mm. Check
chip formation and measure hole size. Also inspect the
drill to make sure no drill-to-hole rubbing is taking place.
Increase feed rate in increments of 0.015 mm to arrive at
optimum machining rates.
E 52
Drilling
- specially developed helical utes, providing unrestricted chip evacuation and high stability
- large chipbreaking area, chip size and shape less limited
- good for long-chipping materials, stainless steel, etc.
- strong insert cutting edges with long, predicable tool-life
- no regrinding
E 53
Drilling
- High machining security through unique cutting action and efcient chip evacuation
Basic features
Diameter range: 14 to 29.5 mm (a growing range)
Radial adjustment: steps of 1.0 mm for 2xD and 4xD; 0.5 for
3xD
Length to diameter alternatives: 2xD, 3xD and 4xD
Coolant supply and type: internal, emulsion; pressure: 6 10
bar; volume: 10 50 l/min
Operational versatility
Rotating and stationary drill in most machine tool types. As a
rotating drill hole machining can be performed through drilling,
boring, helical interpolation and plunge drilling. Angular, concave, convex and irregular surfaces can be entered, and cross
drilling carried out, in most cases necesitating feed reductions
of a quarter of that recommended see general application
hints for indexable insert drilling. Entering of surface angles
up to 89 degrees is possible with the CoroDrill 880. A nishing
return pass, with the drill boring on its way back out of the hole
is not possible with the 880-drill as it is with the Coromant U
drill. The 880-drill can however perform a boring operation on
straight and tapered holes on a forward pass.
A stationary drill can also machine chamfers on holes in one
pass, such as when preparing holes for threading. Boring of
straight and tapered holes can be performed but no nishing
passes on the return stroke.
Improving hole quality...
... can be achieved by pre-setting a non-rotating drill in the machine or a rotating drill in an adjustable holder. In so doing, the
manufacturing tolerances of the tool will be compensated for
and only the insert indexing will inuence the effect of the drill
diameter on the hole dimension.
This means that hole tolerances inside +/- 0.05 mm can be
achieved with 2xDc drills.
If high surface nish is required, a lower feed can be applied
(fn about 0.05 mm/rev) in combination with a high cutting
speed. Surface nish values as small as Ra 0.5 microns can
be achieved in steel under normal conditions.
E 54
Drilling
TOOLING ALTERNATIVES
Convetional turrets
Clamping alternatives
shank type
VDI
hydraulic
If these turrets are equipped with Coromants clamping
units, all types of tools can be applied.
C
Coromant Capto integrated Multi-task machines
Modular tooling with Coromant Capto
The Coromant Capto modular tooling system can easily be
integrated into Multi-task machines.
E 55
Drilling
Grade GC1044
ISO P, M, K, N, S and H PVDcoated grade with layered
TiAlN-coating contributing to
a good edge security. The
substrate is a submicron
cemented carbide with good
balance of toughness and
wear resistance. Basic
choice for mixed production.
Grade GC4014
ISO P Finishing to light
roughing of steel and steel
castings. Low to medium
feed rates at very high
cutting speed. High wear
resistance and good resistance to plastic deformation
permits high metal removal
rates.
ISO K Very good grade for
high high cutting speeds in
stable conditions.
Grade GC4024
ISO P Basic chioce with
excellent toughness behaviour and very high wear
resistance. For moderate to
high cutting speeds. MT-CVD
coated grade.
ISO M Excellent edge
toughness and very high
wear resistance. Very good
resistance against build-up
edges. For medium to high
cutting speeds. MT-CVD
coated grade.
Central insert
E 56
Peripheral insert
Grade GC4044
ISO P, M, K, N, S and H PVDcoated grade with layered
TiAlN-coating contributing to
a good edge security. The
substrate is a submicron
cemented carbide with good
balance of toughness and
wear resistance. Basic
choice for mixed production.
Drilling
K
K
GC4014
GC4024
C
Insert geometries for peripheral and central inserts for CoroDrill 880
The high feed choice,
general geometry for steel and cast iron.
Roughing, insert with strong, reinforced edge.
CoroDrill 880
Wear resistance
01
10
20
4014
4014
4024
4024
30
40
1044
4044
1044
4044
4024
1044
4044
1044
4044
1044
4044
4024
1044
4044
50
Toughness
E 57
Drilling
Cylindrical shank
Drill
dia.
Max radial
adjustment
Dc mm
A
l1s = programming length
Hole tolerance
Tolerance, Dc
0.00/+0.25 mm
2 Dc 0.1 mm
3 Dc 0.1 mm
2 3 x Dc
D
4 Dc
E
E 58
Hole tolerance
0.00/+0.40 mm
Tolerance, Dc
0.1 mm
4 x Dc
Dc
20
20.5
20.9
21
21.5
22
22.5
23
23.5
23.9
24
24.5
25
25.5
26
26.4
26.5
27
27.5
28
28.5
29
29.4
29.5
+0.9
+0.8
+0.8
+0.8
+0.7
+0.6
+0.5
+0.5
+0.4
+0.3
+1.1
+1.0
+1.0
+0.9
+0.9
+0.8
+0.8
+0.7
+0.6
+0.6
+0.5
+0.5
+0.4
+0.4
21.8
22.2
22.4
22.6
22.9
23.3
23.5
24.0
24.3
24.5
26.2
26.5
27.0
27.3
27.8
28.0
28.1
28.4
28.7
29.2
29.5
30.0
30.2
30.3
Drill
dia.
Max radial
adjustment
Dc mm
20
21
22
23
24
25
26
27
28
29
+0.9
+0.8
+0.6
+0.5
+1.1
+1.0
+0.9
+0.7
+0.6
+0.5
Dc
21.8
22.6
23.2
24.0
26.2
27.0
27.8
28.4
29.2
30.0
Drilling
Peripheral insert
880-04C
Dc 20 23.99 mm
880-04P
Dc 20 23.99 mm
880-05C
Dc 24 29.99 mm
880-05P
Dc 24 29.99 mm
A
= Central insert
Dimensions, mm
Insert
size
= Peripheral insert
Insert code
Ic
d1
Central insert
Medium feed
04
05
880- 040305H-C-LM
6.8
2.8
2.8
0.5
040305H-C-GM
6.8
2.8
2.8
0.5
880- 050305H-C-LM
8.4
3.2
0.5
050305H-C-GM
8.4
3.2
0.5
880- 0403W07H-P-LM
7.4
2.8
2.8
0.7
0403W05H-P-GM
7.4
2.8
2.8
0.5
880- 0503W08H-P-LM
8.9
3.2
0.8
0503W05H-P-GM
8.9
3.2
0.5
880- 040305H-C-GR
6.8
2.8
2.8
0.5
880- 050305H-C-GR
8.4
3.2
0.5
880- 0403W07H-P-GR
7.4
2.8
2.8
0.7
880- 0503W08H-P-GR
8.9
3.2
0.8
Peripheral insert
04
05
High feed
Central insert
04
05
Peripheral insert
04
05
Rotating drill
Stationary drill
E 59
Drilling
CMC Material
HB
D
M
E
S
H
N
-LM
(m/min)
-GR
-LM
Dc mm
fnmm/rev.
fn mm/rev.
fn mm/rev.
fn mm/rev.
fn mm/rev.
fnmm/rev.
220-400
230-380
190-235
20.00-23.99
24.00-29.99
0.04-0.12
0.04-0.12
0.04-0.08
0.04-0.08
0.04-0.08
0.04-0.08
0.04-0.12
0.04-0.12
0.04-0.08
0.04-0.08
0.04-0.08
0.04-0.08
80-170
01.1
Non hardened
0.05-0.25% C
90-200
4014*
4024
4044
235-380
225-345
165-220
20.00-23.99
24.00-29.99
0.04-0.14
0.04-0.14
0.04-0.10
0.04-0.10
0.04-0.08
0.04-0.08
0.04-0.14
0.04-0.14
0.04-0.10
0.04-0.10
0.04-0.08
0.04-0.08
01.2
Non hardened
0.25-0.55% C
125-225
4014*
4024
4044
200-320
190-290
120-180
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.26
0.12-0.30
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
01.3
Non hardened
0.55-0.80% C
150-225
4014*
4024
4044
175-305
170-275
105-175
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.26
0.12-0.30
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
01.4
180-275
4014*
4024
4044
175-300
200-275
105-170
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.26
0.12-0.30
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
02.1
150-260
4014*
4024
4044
175-320
180-290
115-180
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.26
0.12-0.30
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
02.2
Hardened steel
220-450
4014*
4024
4044
150-255
90-230
75-140
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.22
0.12-0.26
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
03.11
50-250
4014*
4024
4044
155-300
160-275
100-170
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.26
0.12-0.30
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
03.21
Hardened steel
250-450
4014*
4024
4044
100-215
80-200
70-125
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.22
0.12-0.26
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
06.1
90-225
4014*
4024
4044
190-350
140-310
125-190
20.00-23.99
24.00-29.99
0.04-0.08
0.04-0.08
0.04-0.10
0.04-0.10
0.04-0.14
0.04-0.14
0.04-0.08
0.04-0.08
0.04-0.10
0.04-0.10
0.04-0.14
0.04-0.14
06.2
150-250
4014*
4024
4044
125-265
110-250
100-150
20.00-23.99
24.00-29.99
0.06-0.14
0.06-0.14
0.06-0.18
0.06-0.18
0.12-0.26
0.12-0.30
0.06-0.14
0.06-0.14
0.06-0.18
0.08-0.18
0.12-0.20
0.12-0.22
05.11
150-270
4024
4044
120-265
115-165
20.00-23.99
24.00-29.99
0.06-0.18
0.06-0.18
0.06-0.14
0.06-0.14
0.06-0.14
0.06-0.14
0.06-0.16
0.06-0.16
0.06-0.14
0.06-0.14
0.06-0.14
0.06-0.14
05.21
150-275
4024
4044
120-250
115-180
20.00-23.99
24.00-29.99
0.06-0.16
0.06-0.16
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.14
0.06-0.14
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.12
05.51
05.52
Austenitic/Ferritic (Duplex)
180-320
4024/4044
90-145
85-125
20.00-23.99
24.00-29.99
0.06-0.16
0.06-0.16
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.14
0.06-0.14
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.12
15.21
Austenitic castings
150-250
4024
4044
120-250
115-180
20.00-23.99
24.00-29.99
0.06-0.16
0.06-0.16
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.14
0.06-0.14
0.06-0.12
0.06-0.12
0.06-0.12
0.06-0.12
07.1
110-145
4014
4024
4044
140-255
140-230
80-145
20.00-23.99
24.00-29.99
0.08-0.14
0.08-0.14
0.10-0.18
0.10-0.20
0.14-0.28
0.16-0.32
0.08-0.14
0.08-0.14
0.10-0.18
0.10-0.20
0.14-0.19
0.16-0.25
07.2
150-270
4014
4024
4044
100-185
105-170
65-105
20.00-23.99
24.00-29.99
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.24
0.14-0.28
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.18
0.14-0.22
08.1
150-220
4014
4024
4044
225-345
210-310
130-195
20.00-23.99
24.00-29.99
0.08-0.14
0.08-0.14
0.10-0.18
0.10-0.20
0.14-0.28
0.16-0.32
0.08-0.14
0.08-0.14
0.10-0.18
0.10-0.20
0.14-0.19
0.16-0.25
08.2
200-330
4014
4024
4044
110-250
125-230
75-140
20.00-23.99
24.00-29.99
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.24
0.14-0.28
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.18
0.14-0.22
09.1
150-230
4014
4024
4044
120-235
125-215
80-135
20.00-23.99
24.00-29.99
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.24
0.14-0.28
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.18
0.14-0.22
09.2
Pearlitic
200-330
4014
4024
4044
100-215
110-200
70-125
20.00-23.99
24.00-29.99
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.24
0.14-0.28
0.08-0.14
0.08-0.14
0.10-0.16
0.10-0.18
0.12-0.18
0.14-0.22
04.1
450
4024
30-80
20.00-23.99
24.00-29.99
0.05-0.14
0.05-0.14
0.07-0.18
0.07-0.18
0.05-0.14
0.05-0.14
0.05-0.12
0.05-0.12
0.07-0.15
0.07-0.15
0.05-0.12
0.05-0.12
20.21
20.22
20.24
140-425
4044
15-25
20.00-23.99
24.00-29.99
0.05-0.08
0.06-0.10
0.05-0.10
0.06-0.12
0.05-0.08
0.06-0.08
0.04-0.08
0.05-0.10
0.05-0.08
0.06-0.10
0.05-0.08
0.06-0.08
23.21
23.22
Ti alloys
Rm (Mpa)
600-1500
4024/4044
40-50
20.00-23.99
24.00-29.99
0.08-0.16
0.12-0.18
0.08-0.14
0.10-0.16
0.08-0.12
0.10-0.14
0.08-0.14
0.10-0.16
0.06-0.12
0.08-0.14
0.08-0.12
0.10-0.14
30.12
30-150
4044
300-385
20.00-23.99
24.00-29.99
0.06-0.16
0.10-0.18
0.06-0.18
0.10-0.20
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
30.21
40-100
4044
300-385
20.00-23.99
24.00-29.99
0.06-0.16
0.10-0.18
0.06-0.18
0.10-0.20
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
30.22
70-140
4044
250-335
20.00-23.99
24.00-29.99
0.06-0.16
0.10-0.18
0.06-0.18
0.10-0.20
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
33.1
50-160
4044
250-380
20.00-23.99
24.00-29.99
0.06-0.16
0.10-0.18
0.06-0.18
0.10-0.20
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
33.2
50-160
4044
180-230
20.00-23.99
24.00-29.99
0.06-0.16
0.10-0.18
0.06-0.18
0.10-0.20
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
0.06-0.16
0.10-0.18
0.06-0.14
0.10-0.16
E 60
Geometry/Feed
Drill length 2-3xD
-GM
01.0
Peripheral
insert
Drill
diameter
4014*
4024
4044
Cutting
speed
Grade
Note: Bold text is recommended grade, geometry and cutting data. Central insert grade is always 1044.
Drilling
Peripheral insert
P M K N S H
Dc 12.7 17 mm
General choice
C-53
P-53
TC-53
P-53
Complementary choice
P K H
TC -53, optimized geometry for increased edge security
Wiper
Dc 17.5 41 mm
Productivity choice
-WM
-WM
-WM
-WM
P K M
Wiper geometry for up to 50% higher feed
For steel and cast iron with hardness above 200HB and easy
to machine stainless steels
For stable conditions and open tolerance holes
Central and peripheral insert
-53
-53
-53
-53
-53
-58
-53
-58
T-53
T-53
Complementary choice
P M K N S H
Good chip control in most materials including: steel, stainless, cast iron, titanium, heat resistant alloys and aluminium
Low to high cutting speeds
Central and peripheral insert
P M
Geometry -58, optimized as peripheral insertfor low carbon
steel and stainless steel
High cutting speeds
T-53
T-53
-53
-51
-56
-56
Complementary choice
P K H
Optimized geometries with increased edge security
Dc 26 58 mm
Dc 17.5 58 mm
General choice
P M K
Geometry -51, optimized as peripheral for good chip control
in steel, stainless, cast iron
High cutting speeds
P M
Good chip control in steel and stainless
E 61
Drilling
Inserts for Coromant U drills R416.2, R416.21, R416.22 and T-Max U drills R416.9, L416.1
Central
Peripheral
LCMX 02
C-53
Dc 12.7-17.0
LCMX 02
P-53
Dc 12.7-17.0
LCMX 03/04
R-WM
Dc 12.7-17.0
LCMX 03/04
Dc 17.5-25.0
Wiper
Insert code
Dimensions, mm
= Peripheral insert
= Central insert
= Central and peripheral
insert
iC
d1
All-round geometry
02
LCMX
02 02 04 P-53
02 02 04 C-53
02 02 04 TC-53
2.68
2.68
2.68
2.5
2.5
2.5
2.38
2.38
2.38
0.4
0.4
0.4
03
LCMX
03 03 08-53
03 03 08-53
03 03 04-58
03 03 08 T-53
03 03 04R-WM
03 03 04R-WM
3.25
3.25
3.25
3.25
3.25
3.25
2.5
2.5
2.5
2.5
2.5
2.5
3.18
3.18
3.18
3.18
3.18
3.18
0.8
0.8
0.4
0.8
0.4
0.4
04
LCMX
04
04
04
04
04
04
03
03
03
03
03
03
08-53
08-53
04-58
08 T-53
04R-WM
04R-WM
4.0
4.0
4.0
4.0
4.0
4.0
2.8
2.8
2.8
2.8
2.8
2.8
3.18
3.18
3.18
3.18
3.18
3.18
0.8
0.8
0.4
0.8
0.4
0.4
05
WCMX 05
05
05
05
05
05
05
05
03
03
03
03
03
03
03
03
04 R-WM
04 R-WM
08 R-51
08 R-53
08 R-53
08-58
08 T-53
08-56
5.07
5.07
5.07
5.07
5.07
5.07
5.07
5.07
7.938
7.938
7.938
7.938
7.938
7.938
7.938
7.938
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.18
3.18
3.18
3.18
3.18
3.18
3.18
3.18
0.4
0.4
0.8
0.8
0.8
0.8
0.8
0.8
06
WCMX 06
06
06
06
06
06
06
06
T3
T3
T3
T3
T3
T3
T3
T3
04 R-WM
04 R-WM
08 R-51
08 R-53
08 R-53
08-58
08 T-53
08-56
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
9.525
9.525
9.525
9.525
9.525
9.525
9.525
9.525
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.97
3.97
3.97
3.97
3.97
3.97
3.97
3.97
0.4
0.4
0.8
0.8
0.8
0.8
0.8
0.8
08
WCMX 08
08
08
08
08
08
04
04
04
04
04
04
12 R-51
12 R-53
12 R-53
12-58
12 T-53
12-56
8.14
8.14
8.14
8.14
8.14
12.7
12.7
12.7
12.7
12.7
4.3
4.3
4.3
4.3
4.3
4.76
4.76
4.76
4.76
4.76
1.2
1.2
1.2
1.2
1.2
E 62
WCMX 05/06/08
Dc 26.0-80.0
Drilling
Cutting data
Coromant U and T-Max U drills R/L416.1, R416.2, R416.21, R416.22 and R416.9
ISO
CMC Material
No.
Drill
dia
HB
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.040.14
0.080.18
0.100.20
0.120.24
0.040.10
0.060.14
0.080.18
0.100.20
0.120.24
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.0-80.0
0.040.10
0.060.14
0.080.18
0.100.20
0.120.24
0.040.10
0.060.12
0.100.16
0.110.18
0.120.22
220450
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.060.14
0.100.18
0.100.20
0.120.24
50250
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.08
0.040.14
0.080.18
0.100.20
0.120.24
250450
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.060.12
0.100.16
0.110.18
0.120.22
90225
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.08
0.040.08
0.050.10
0.060.12
0.070.14
150250
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.060.12
0.100.16
0.110.18
0.120.22
150270
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.040.14
0.080.18
0.100.20
0.120.24
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.040.12
0.080.14
0.100.16
0.110.18
0.040.10
0.040.12
0.080.14
0.100.16
0.110.18
01.0
80170
01.1
Non hardened
0.050.25% C
90200
01.2
Non hardened
0.250.55% C
125225
01.3
Non hardened
0.550.80% C
01.4
High carbon
& carbon
tool steel
150225
180275
Low-alloy steel
02.2
150260
Non hardened
Hardened
High-alloy steel
03.11 Annealed
Steel castings
06.1
Unalloyed
06.2
Low alloyed
(alloying
elements 5%)
Stainless steel
Ferritic,
05.11 Martensitic
1325% Cr
Austenitic
05.21 Ni > 8%
1325% Cr
150275
Austenitic
05.51 Ferritic
05.52
(duplex)-
Insert positioning:
fn
mm/r
0.040.08
0.040.08
0.050.08
0.070.10
0.080.12
0.040.08
0.040.08
0.050.10
0.070.12
0.080.14
Non hardened
0.050.10% C
180320
= Central
= Peripheral
Wi per
Geometry / Grade
Speed
FIRST CHOICE
Highest productivity
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
Unalloyed steel
02.1
Dc mm
Feed
Complementary
vc
m/min
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
290 (230380)
270 (225345)
230 (190290)
-53/3040
210 (170275)
-53/3040
-53/1020
-53/1020
-53/1020
-53/1020
210 (200275)
-53/3040
-53/1020
220 (180290)
-53/3040
-53/1020
170 ( 90230)
-53/3040
180 (160275)
-53/3040
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
130 ( 80200)
-53/3040
200 (140310)
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
160 (110250)
-53/3040
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
170 (120265)
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
-53/3040
150 (120250)
110 ( 90145)
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
C
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
G
-53/1020
-53/1020
H
-53/1020
-WM geometry for machining steel and cast iron with hardness < 200 HB in stable
conditions, increase feed (f ) with 50%. For easy to machine stainless steels in stable
conditions, increase feed (f ) with 25%.
n
n
E 63
Drilling
ISO
CMC Material
No.
Drill
dia
HB
M
A
Stainless steel
15.21 Austenitic
castings
150250
20.21
20.22 Ni based
20.24
140425
Titanium alloys
Rm (MPa)
6001500
07.1
Ferritic
(short chipping)
07.2
Pearlitic
(long chipping)
110145
150270
08.1
Low tensile
strength
150220
08.2
High tensile
strength
200330
H
F
09.1
Ferritic
125230
09.2
Pearlitic
200300
04.1
450
Aluminium alloys
30150
40100
G
Cast
30.22 or cast and
aged
33.1
H
33.2
Insert positioning:
E 64
70140
50160
50160
= Central
Feed
Geometry / Grade
Speed
FIRST CHOICE
Highest productivity
Dc mm
fn
mm/r
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.08
0.040.12
0.050.12
0.060.14
0.060.14
0.030.08
0.040.08
0.060.10
0.080.12
0.090.14
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.080.14
0.120.16
0.140.18
0.160.20
0.040.14
0.100.18
0.140.20
0.160.26
0.180.28
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.10
0.080.14
0.120.18
0.140.20
0.150.22
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.14
0.100.18
0.140.20
0.160.26
0.180.28
0.040.10
0.080.14
0.120.18
0.140.20
0.150.22
0.040.10
0.080.14
0.120.18
0.140.20
0.150.22
0.040.10
0.080.14
0.120.18
0.140.20
0.150.22
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.050.08
0.070.15
0.070.15
0.100.15
0.100.15
0.040.12
0.060.16
0.100.18
0.120.22
0.140.26
0.040.12
0.060.16
0.100.18
0.120.22
0.140.26
0.040.12
0.060.16
0.100.18
0.120.22
0.140.26
0.040.12
0.060.16
0.100.18
0.120.22
0.140.26
12.717.0
17.525.4
26.030.0
31.041.3
42.080.0
0.040.12
0.060.16
0.100.18
0.120.22
0.140.26
Complementary
vc
m/min
-53/1120
110 ( 80155)
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
50 ( 20 88)
-53/1020
60 ( 40132)
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
170 (140230)
-53/3040
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
T-53/1020
-53/1020
T-53/1020
140 (105170)
-53/3040
-53/1020
250 (210310)
-53/3040
-53/1020
170 (125230)
-53/3040
-53/1020
170 (125215)
-53/3040
-53/1020
150 (110200)
-53/3040
-53/1020
40 ( 3080)
-53/3040
-53/1020
-53/1020
-53/1120
-53/1020
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1120
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
-53/1020
-53/H13A
-53/H13A
-53/H13A
-53/H13A
350 (300440)
150 ( 30440)
300 (250385)
300 (250385)
230 (180265)
= Peripheral
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1120
-53/1020
-53/1020
-53/1020
-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
T-53/1020
-53/1020
Drilling
Feed force
5
0.1
f n=
0.10
f n=
f = 0.05
2.0
1.3
20
0.7
0
Ff
[kN]
14
f n=
0 12.7
0.2
.20
0
f n=
15
f n=
10
f n=
12
10
0.1
A
1.2
0.8
0.4
0
8
0.10
f n=
0.15
0
f n = 0.1
.25
0
f n=
fn = 0.05
f n=
0 12.7
f n=
f n = 0.05
012.7 20
30
40
50
60
70
80
Dc [mm]
0.15
2
0
0.2
f n = 0.1
kc = 2500 N/mm2
Dc fn kcfz vc
[kW]
240 x 103
(Only for solid drilling)
Pc =
fn = 0.05
012.7 20
30
40
50
C
60
70
80
Dc [mm]
78
Note that only net power ratings are given. Allowance must be
made for the efciency of the machine and the cutting edge
wear.
E 65
Drilling
A
79- 85
Tolerance, Dc
Max hole depth, l4
12.758 mm
+0.3 mm
-0.1 mm
0.15 mm (Dc 12.7 25.0 mm)
0.20 mm (Dc 26.0 58.0 mm)
2 x Dc
B
l1s = programming length
3 Dc R 416.2
C
Cylindrical shank
Flat according to ISO 9766
79- 85
Drill diameter, Dc
Hole tolerance
Tolerance, Dc
Max hole depth, l4
12.758 mm
+0.3 mm
-0.1 mm
0.15 mm (Dc 12.7 30.0 mm)
0.20 mm (Dc 31.0 58.0 mm)
3 x Dc
D
l1s = programming length
4 Dc R 416.2
E
Cylindrical shank
Flat according to ISO 9766
Drill diameter, Dc
Hole tolerance
79- 85
Tolerance, Dc
Max hole depth, l4
12.758 mm
+0.4 mm
-0.1 mm
0.20 mm
4 x Dc
3 Dc R 416.2
Coromant Capto
Drill diameter, Dc
Hole tolerance
79- 85
Tolerance, Dc
Max hole depth, l4
12.730 mm
+0.3 mm
-0.1 mm
0.15 mm (Dc 12.7 25.0 mm)
0.20 mm (Dc 26.0 30.0 mm)
3 x Dc
E 66
Drilling
Drill diameter, Dc
Hole tolerance
79- 85
Tolerance, Dc
Max hole depth, l4
12.741 mm
+0.4 mm
-0.1 mm
0.20 mm
4 x Dc
B
l1s = programming length
3 Dc R 416.2
Compatible with ABS holders
Drill diameter, Dc
Hole tolerance
79- 85
Tolerance, Dc
Max hole depth, l4
12.741 mm
+0.3 mm
-0.1 mm
0.15 mm (Dc 12.7 25.0 mm)
0.20 mm (Dc 26.0 41.0 mm)
3 x Dc
D
l1s = programming length
4 Dc R 416.2
E
79- 85
Tolerance, Dc
Max hole depth, l4
12.741 mm
+0.4 mm
-0.1 mm
0.20 mm
4 x Dc
3 Dc R 416.2
79- 85
Drill diameter, Dc
Hole tolerance
Tolerance, Dc
Max hole depth, l4
17.541.3 mm
+0.3 mm
-0.1 mm
0.15 mm (Dc 12.7 25.0 mm)
0.20 mm (Dc 26.0 41.3 mm)
3 x Dc
E 67
Drilling
R 416.21
Cylindrical shank
Flat according to ISO 9766
Drill diameter,
Hole depth
Hole tolerance
Cutting uid:
1321 mm
1-3 x Dc
+0.3 mm
-0.1 mm
Emulsion
Plunge drills
4 Dc R 416.22
C
79- 85
Drill diameter, Dc
Tolerance, Dc
Max hole depth, l4
12.735 mm
0.20 mm
4 x Dc
D
l1s = programming length
E 68
Drilling
79- 85
Drill diameter, Dc
Tolerance, Dc
Max hole depth, l4
17.558 mm
0.20 mm
2.5 x Dc
B
l1s = programming length
2.5 Dc
Stack drills
Coromant Whistle Notch shank
C
85
Drill diameter, Dc
Tolerance, Dc
Max hole depth, l4
2759 mm
0.20 mm
2.5 x Dc
D
l1s = programming length
Indexable drills
- Dc 60-80 mm
E
Varilock coupling
85
Drill diameter, Dc
Tolerance, Dc
Max hole depth, l4
6080 mm
0.20 mm
2.5 x Dc
Varilock coupling
85
Drill diameter, Dc
Tolerance, Dc
Max hole depth, l4
60110 mm
0.20 mm
2.5 x Dc
E 69
Drilling
E 70
Setting of the holder can be made in a presetting unit, preferably one equipped with
projector and electronic scanning facility. Initially the true nominal diameter for each drill
has to be measured. The adjustment of the
drill position can then be carried out to the
hole diameter required. The setting range of
the holder (+1.4/-0.4 mm on the diameter)
does not correspond with the setting range
for Coromant U-drills in diameters 16.5, 17
and 25 mm, this value has to be carefully
checked in the ordering information before
Max
Min
Drilling
2 Dc
Radial adjustment
(max)
Drill
diameter
Max
Dc
Dc mm
Coromant U drills
12.7
13
13.5
14
14.5
15
15.5
16
16.5
17
17.5
18
18.5
19
20
21
22
23
24
25
26
27
28
29
30
+ 1.2
+ 1.15
+ 1.1
+ 1.0
+ 0.9
+ 0.85
+ 0.75
+ 0.7
+ 0.6
+ 0.5
+ 1.0
+ 0.9
+ 0.85
+ 0.8
+ 0.75
+ 1.5
+ 1.25
+ 1.0
+ 0.75
+ 0.5
+ 2.5
+ 2.2
+ 2.1
+ 1.8
+ 1.8
15.1
15.3
15.7
16.0
16.3
16.7
17.0
17.4
17.7
18.0
19.5
19.8
20.2
20.6
21.5
24.0
24.5
25.0
25.5
26.0
31.0
31.4
32.2
32.6
33.0
31
32
33
34
35
36
37
38
39
40
41
+ 3.5
+ 3.2
+ 3.0
+ 2.8
+ 2.5
+ 2.3
+ 2.0
+ 1.8
+ 1.5
+ 1.2
+ 1.0
38.0
38.4
39.0
39.6
40.0
40.6
41.0
41.6
42.0
42.4
43.0
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
+ 4.2
+ 4.0
+ 3.7
+ 3.6
+ 3.3
+ 3.0
+ 2.7
+ 2.5
+ 2.2
+ 2.0
+ 1.8
+ 1.5
+ 1.2
+ 0.8
+ 0.6
+ 0.5
+ 0.4
50.4
51.0
51.4
52.2
52.6
53.0
53.4
54.0
54.4
55.0
55.6
56.0
56.4
56.6
57.2
58.0
58.8
Dc mm
17.5
18
18.5
19
20
21
22
22.2
23
24
25
25.4
26
27
28
28.6
29
30
31
31.8
32
33
34
35
36
37
38
39
40
41
41.3
3 Dc
Radial adjustment
(max)
Stationary drill
+ 1.0
+ 0.9
+ 0.85
+ 0.8
+ 0.75
+ 1.5
+ 1.25
+ 1.2
+ 1.0
+ 0.75
+ 0.5
+ 0.4
+ 2.5
+ 2.2
+ 2.1
+ 1.9
+ 1.8
+ 1.5
+ 3.5
+ 3.3
+ 3.2
+ 3.0
+ 3.0
+ 2.5
+ 2.3
+ 2.0
+ 1.8
+ 1.5
+ 1.2
+ 1.0
+ 0.9
T-Max U drills
Left hand drills
Drill
diameter
Dc mm
17.5
18
18.5
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
58
2.5 Dc
Radial adjustment
(max)
Stationary drill
+ 1.5
+ 1.4
+ 1.3
+ 1.2
+ 1.0
+ 1.6
+ 1.5
+ 1.25
+ 1.0
+ 0.8
+ 2.5
+ 2.2
+ 2.1
+ 1.8
+ 1.5
+ 3.5
+ 3.2
+ 3.0
+ 2.8
+ 2.5
+ 2.3
+ 2.0
+ 1.8
+ 1.5
+ 1.2
+ 1.0
+ 4.2
+ 4.0
+ 3.7
+ 3.5
+ 3.3
+ 3.0
+ 2.7
+ 2.5
+ 2.2
+ 2.0
+ 1.8
+ 1.5
+ 1.2
+ 0.8
+ 0.6
+ 0.4
E 71
Drilling
Drill diameter
Mounting type
Cylindrical with at
and Cylindrical
Dc mm
Coromant
Whistle Notch
12.70-17.43
17.44-20.99
21.00-25.99
26.00-30.99
31.00-41.99
42.00-58.99
16, 20 , 25, 32
20, 25, 32
25, 32
32, 40
40
40, 50
1)
Coromant Capto
Varilock
Compatible with
ABS holders
50, 63
50, 63
50, 63
50, 63
50, 63
63
50
50
50
50
50
-
B
1)
LCMX 02,
LCMX 03,
LCMX 04,
WCMX 05,
WCMX 06,
WCMX 08,
LCMX
Dc = 12.70-17.43
Dc = 17.44-20.99
Dc = 21.00-25.99
Dc = 26.00-30.99
Dc = 31.00-41.99
Dc = 42.00-58.99
WCMX
Coromant Capto
Cylindrical with at
Cylindrical
Varilock
Options
G
Diameter Dc
Drill length l3s
Drill depth l4
Mounting type
E 72
12.70-58.99 mm
28.0-239.7 mm depending on other parameters
Dc12.70-47.002--Dc-5--Dc
Dc47.01-58.99Max 235 mm
Cylindrical with at, acc. to ISO 9766CYLPFF,
Cylindrical same length as ISO 9766CYLFA
Short cylindrical with atCYLFB
Coromant Whistle NotchCWN
Coromant CaptoCapto
VarilockVL
Compatible with ABS holdersABS
Taper length ch
Dc12.70-45.400.5--Dc-1--Dc
Dc45.41-58.99Max 37.4-mm
Recommened value 0.6--Dc
38.9-346.6 mmdepending on
other parameters
Flute length l6
34.2-277.1 mm,
Recommended value must be used
to obtain required l3s or l4
Drilling
CMC
Material
Drill dia.
Feed
Speed
Dc mm
fn
mm/r
vc
m/min
Geometry / Grade
No.
HB
01.1
02.1
Unalloyed steel
Non hardened
0.050.25% C
Low-alloy steel
Non hardened
Stainless steel
Ferritic, Martensitic
1325% Cr
Austenitic
05.21 Ni > 8%
1325% Cr
05.51 Austenitic
05.52 Ferritic
(duplex)
Stainless steel
15.21 Austenitic castings
05.11
90200
150260
150270
150275
180320
150250
27-32.99
33-42.99
43-59
27-32.99
33-42.99
43-59
27-32.99
33-42.99
43-59
27-32.99
33-42.99
43-59
27-32.99
33-42.99
43-59
27-32.99
33-42.99
43-59
Application area
The drill is specially designed for drilling holes in stacked components, with or without air gaps. The max recommended gap
is 1 mm.
The combined features of geometry and position of the inserts
produce a smaller end disc as different from conventional drills
upon break through of the hole. This avoids the danger of inserts crushing.
0.050.08
0.090.09
0.070.12
0.050.08
0.090.09
0.070.12
0.050.08
0.090.09
0.070.12
0.050.08
0.090.09
0.070.12
0.050.08
0.090.09
0.070.12
0.050.08
0.090.09
0.070.12
100-300
75-200
75-200
100-300
50-150
30-200
Insert positioning
= Central and peripheral
-54/235
-56/235
-56/235
-54/235
-56/235
-56/235
-54/235
-56/235
-56/235
-54/235
-56/235
-56/235
-54/235
-56/235
-56/235
-54/235
-56/235
-56/235
Note!
Only use WCMX-56 SR as central inserts
WCMX-SR
TCMT
R416.01-xxx-20-05
End disc (stack drill)
R416.2-xxx-20-05
End disc
E 73
Drilling
Central
TCMT
Dc 27-59
WCMX
Dc 27-59
Insert code
Dimensions, mm
= Peripheral Insert
= Central Insert
iC
d1
05
WCMX 05 03 SR-54
5.07
7.938
3.2
3.18
06
WCMX 06 T3 SR-56
6.14
9.525
3.7
3.97
08
WCMX 08 04 SR-56
8.14
12.7
4.3
4.76
13
TCMT 13 03 08-54
13.7
7.938
3.2
3.18
0.8
16
TCMT 16 T3 08-56
16.5
9.525
3.7
3.97
0.8
TCMT 22 04 12-56
22
12.7
4.3
4.76
1.2
22
Insert code
Dimensions, mm
= Peripheral Insert
= Central Insert
iC
d1
6.14
6.14
9.525
9.525
3.7
3.7
3.97
3.97
0.8
0.8
6.14
6.14
9.525
9.525
3.7
3.7
3.97
3.97
0.8
0.8
9.525
4.4
3.97
0.8
06
WCMX 06 T3 08 R-53
WCMX 06 T3 08 R-51
Optimized geometry
06
WCMX 06 T3 08-58
WCMX 06 T3 08-56
16
E 74
TCMT 16 T3 08-UR
16.5
Drilling
Feed force
Pc
[kW]
40
Pc =
ap fn kcfz vc
60 103
ap
Dc
Ff
[kN]
8
[kW]
fn = 0.3 mm/r
35
kc = 2200 N/mm2
30
vc = 200 m/min
25
50
50
5
kc = 2750 N/mm2
fn = 0.3 mm/r
15
kc = 2200 N/mm2
vc = 100 m/min
fn = 0.15 mm/r
10
kc = 2750 N/mm2
4
Feed force for
fn = 0.10 mm/r
fn = 0.20 mm/r
fn = 0.30 mm/r
kc = 3000 N/mm2
kc = 2500 N/mm2
kc = 2200 N/mm2
5
0
50
100
150
200
Trepanning torque
Mc =
Mc
[Nm]
1400
250
Dc fn kcfz ap
2000
Dc [mm]
( )
a
1 p
Dc
0
0
0.05
0.10
0.15
0.20 0.25
0.30
0.35 fn [mm/r]
Cutting uid ow
[Nm]
q
[l/min]
70
m
1200
0
25
co
0m
600
Dc
ap = 18 mm
m
0m
15
50
40
200
Dc
m
100
Dc
50 mm
in
400
e
mm
Re
20
Dc
800
30
The cutting uid quantity is measured at the
cutting edge of the drill.
20
0
0.05 0.10
0.15 0.20
ed
nd
60
1000
Dc
fn = 0.15 mm/r
20
fn [mm/r]
60
70
80
90 100
110
Dc [mm]
The graphs show nominal values which should not be regarded as strict recommendations. The values may need
adjusting depending on the machining conditions e.g., the
type of material.
Note that only net power ratings are given. Allowance must
be made for the efciency of the machine and the cutting
edge wear.
E 75
Drilling
CMC
No.
Material
Drill
dia
M
E
N
G
250345
225315
-58/3040
-58/3040
-56/235
-56/235
0.100.20
130210
-51/235
-56/235
0.110.18
0.100.20
145210
100165
-51/235
-53/235
50250
60110 0.100.20
125200
-51/235
-53/235
250450
60110 0.110.18
90145
-51/235
-53/235
90225
150250
60110
0.060.12
0.110.18
195280
120175
-58/3040
-51/GC-A
-56/235
-53/235
Stainless steel
05.11 Ferritic, Martensitic 1325% Cr
150270
60110 0.100.20
170240
-58/3040
-56/235
Stainless steel
05.21 Austenitic Ni > 8% 18-25% Cr
150270
60110 0.100.16
100140
-58/235
-56/235
07.1
07.2
110145
150270
0.160.26
60110 0.140.20
140210
105155
-53/3040
-53/H13A
08.1
08.2
150220
200330
0.160.26
60110 0.140.20
210280
105155
-53/4025
-53/H13A
09.1
09.2
125230
200300
0.140.20
60110 0.140.20
125195
110180
-53/3040
-53/H13A
75150
40100
70125
60110 0.120.22
250400
-53/H13A
-53/H13A
60110 0.120.22
180350
-53/H13A
-53/H13A
Unalloyed steel
Non hardened 0.050.10% C
Non hardened 0.050.25% C
Non hardened 0.250.55% C
Non hardened 0.550.80% C
High carbon & carbon tool steel
80170
90200
125225
150250
180275
60110
02.1
02.2
Low-alloy steel
Non hardened
Hardened
150260
220400
60110
03.11
03.13
03.21
03.22
High-alloy steel
Annealed
Annealed HSS
Hardened tool steel
Hardened steel
Steel castings
Unalloyed
Low alloyed
(alloying elements 5%)
Aluminium alloys
Wrought solution treated & aged
30.12
Cast
30.21 Cast, solution treated & aged
30.22
33.1
33.2
Insert positioning:
E 76
Complementary
0.070.10
0.070.12
Dc mm
01.0
01.1
01.2
01.3
01.4
06.1
06.2
FIRST CHOICE
Highest productivity
vc
m/min
Geometry / Grade
Speed
fn
mm/r
HB
Feed
Drilling
Solid workpiece
Normally the trepanning tool is used for drilling solid workpieces.
B
Central
L430.26-1117-06
Peripheral
R430.26-1114-06
D
Inner
L430.26-1117-06-SD
Peripheral
R430.26-1114-06-SD
F
Inner
32 82 32 L4-1
Peripheral
R430.26-1114-06-SD
G
Fig. 1
WCMX
Fig. 2
Core
TCMT
Core
Fig. 3
E 77
Drilling
Assembly instructions
Coolant
T-MAX U holder
Coolant
Varilock holder
Varilock holder
Coolant
E
1. If the Varilock basic holder is used, remove the Varilock nut and
screw from the basic holder, using Varilock key 5680 065-02.
2. Twist the screw 5516 030-01 two full turns into the holder
(Varilock or T-Max U holders).
F
Tight clockwise
G
Untight counter clockwise
3. Fit the centering sleeve 5638 030-01 into the rear of the drill.
E 78
Drilling
Cutting data
recommendations
Choose cutting data according to the
drilling operation
Reduce cutting data when step drilling
Choose corner radius 0.4 mm for
step/chamfer insert. If stronger insert
is needed, choose radius 0.8 mm.
For alternative step/chamfer inserts,
see Turning tool catalogue.
ISO
CoroTurn 107
TCMT
TCMT
TCMT
TCMT
TCMT
TCMT
TCMT
06
06
06
09
09
09
11
11
11
16
16
16
09
09
16
16
T1 04-UF
T1 04-MF
T1 04-KF
02 04-PF
02 04-MF
02 04-KF
03 04-PF
03 04-MF
03 04-KF
T3 04-PF
T3 04-MF
T3 04-KF
02 04-UF
02 04-UM
T3 04-UF
T3 04-UM
E 79
Drilling
Drill diameter
Mounting type
A
Cylindrical with at
and Cylindrical
Dc1 mm
12.70-17.43
17.44-20.99
21.00-25.99
26.00-30.99
31.00-41.99
42.00-58.99
Coromant
Whistle Notch
Coromant Capto
Varilock
Compatible with
ABS holders
50, 63
50, 63
50, 63
50, 63
50, 63
63
50
50
50
50
50
-
Standard inserts:
LCMX 02,
LCMX 03.
LCMX 04,
WCMX 05,
WCMX 06,
WCMX 08,
Dc1 = 12.70-17.43
Dc1 = 17.44-20.99
Dc1 = 21.00-25.99
Dc1 = 26.00-30.99
Dc1 = 31.00-41.99
Dc1 = 42.00-58.99
LCMX
WCMX
Options
No of extra
inserts
1 or 2
Dc1
Drill alternative
r1
ch1
lch1
Dc2
l21
Drill alternative
r2
E 80
ch2
lch2
Dc3
l22
l3s
Coupling
Rotate Capto
coupling 180
Yes or No
dmm/D5m
Coupling size
M=metric or U=inch
Programming length 35.3-307.4 mm
Coupling unit
l1s
Drilling
B
l21 = 1.5 Dc1
C
5
6
l21 = 1.5 Dc1
Type S 416.20
7
8
l21 = 3.0 Dc1
10
l21 = 3.0 Dc1
l22 = 3.0 Dc2
11
12
l21 = 3.0 Dc1
E 81
Drilling
Dc
ap
l1
l1s
l2
l3
l3s
l4
vc
n
vf
fn
fz
kc
kc 0.4
kcfz
Ff
F
Mc
M
Pc
P
r
sh
q
p
Terminology
Drill diameter
Cutting depth
Programming length to outer corner
Programming length to chisel edge
Total length
Max. operating length to outer corner
Max. operating length to chisel edge
Recommended max. operation length
Cutting speed
Spindle speed
Feed speed
Feed per rev.
Feed per tooth
Specic cutting force
Specic cutting force for fz = 0.4
Specic cutting force for feed per edge
Feed force
Feed force caused by friction
Torque
Torque caused by friction
Net power (cutting power)
Power caused by friction
Tool cutting edge angle
Tool normal rake angle
Cutting uid quantity
Cutting uid pressure
Unit
mm
mm
mm
mm
mm
mm
mm
mm
m/min
r/min
mm/min
mm/r
mm/z
N/mm2
N/mm2
N/mm2
N
N
Nm
Nm
kW
kW
Degrees
Degrees
l/min
Mpa
Cutting depth, ap
Solid drilling
Trepanning
kcfz = kc 0.4
( f x0.4sin ) 0.29(N/mm )
2
E 82
Drilling
Formulas for Coromant 880, Coromant U, T-Max U, Coromant Delta and CoroDrill Delta-C
Dc n
1000
vc =
vf = fn n
Torque (Nm)1)
Mc = Dc fn kcfz ap
2000
Pc = Dc fn kcfz vc
240 x 103
ap
Dc
The power requirement is calculated on the basis of an unused tool, i.e. tool without wear.
For a tool with normal wear, the power requirement is 10-30% higher, depending upon the
size of the drill.
Specic cutting
force, kc 0.4 1)
Material
HB
N/mm2
01.1
01.2
01.3
Unalloyed
steel
02.1
02.2
02.2
02.2
03.1
03.2
05.11
05.21
C = 0.15%
C = 0.35%
C = 0.60%
Non-hardened
Hardened and tempered
Hardened and tempered
Hardened and tempered
125
150
200
1900
2100
2250
Annealed
Hardened
180
275
300
350
200
325
2100
2600
2700
2850
2600
3900
Stainless steel
Martensitic/ferritic
Austenitic
200
175
2300
2450
06.1
06.2
06.3
Steel castings
Unalloyed
Low alloyed
high alloyed
180
200
225
2000
2500
2700
04
06.33
Hard steel
Hardened steel
Manganese steel 12%
55 HRC
250
4500
3600
07.1
07.2
Ferritic
Pearlitic
130
230
1100
1100
08.1
08.2
180
260
1100
1500
09.1
09.2
Ferritic
Pearlitic
160
250
1100
1800
10
400
3000
20.11
20.12
20.21. 20.31
20.22. 20.32
20.24. 20.33
Fe-base, annealed
Fe-base, aged
Ni- or Co-base, annealed
Ni- or Co-base, aged
Ni- or Co-base, cast
200
280
250
350
320
3000
3050
3500
4150
4150
30.11
30.12
Aluminium alloys
60
100
500
800
30.21
30.22
Aluminium alloys,
cast
75
90
750
900
33.1
33.2
33.3
Copper and
copper alloys
110
90
100
700
750
1750
E 83
Drilling
When cutting edges wear down prematurely giving poor tool-life, the cause is
usually incorrect cutting data, wrong insert grades or even drill type or poor cutting uid supply. Instability and poor cutting uid supply also lead to poor tool-life.
When cutting edges chip, the alignment
of the drill should be checked for it should
be within the recommended limits. Concentricity should be within +/-0.05 mm.
Lack of rigidity in the set-up, tool or machine often lead to chipping, necessitating a tougher cutting edge. If the insert is
not seated or retained securely, chipping
may occur. Insert seats and screws have
to be well maintained in high performance
drills with frequent changing of insert
screws recommended. Another important
factor is how securely the drill is held in
the machine for stability during machining
tool holding quality is important.
E 84
Drilling
(2)
Problems
Possible remedies
Problems
Front face of drill
broken
Oversize/undersize
hole
Check Speed/
feed guidelines
Check the
carbide grade
Increase the
speed
Vibrations
Check bottom
of hole or disk
for centre stub
(only Coromant
U-drill)
Wear on outside
diameter of drill
Improve the
stability, reclamp
component,
shorten drill
overhang
E 85
Drilling
- select the right tool for the operation, apply correctly and
optimize
- optimize as regards combination of high cutting speed and
feed rate for good chip evacuation
- check on the suitability of the drill for the operation choose the best option available
- establish a reliable, predetermined tool-life program
E 86
Drilling
A
H13A - (N15, S20, K25)
H13A is a fairly ne grained grade with a
very good balance between wear resistance
and toughness making it a very versatile
grade suitable for many materials and applications. Used for milling of heat resistant
alloys at moderate cutting speed and feed,
milling of aluminum alloys and nishing to
medium machining of cast iron. Very suitable for nodular cast iron.
P20 - (P20)
A cemented carbide containing titanium
based carbides adding wear resistance
and hot hardness. The carbide is PVD
coated, with a 3 micron TiN layer. Used
for Coromant Delta drills in general steel
applications.
(GC235, GC1020, GC1025, GC1044, GC1120, GC1210, GC1220, GC3040, GC4014, GC4024,
GC4044, N20D)
TiN
Ti (C,N)
TiC
GC235 - (P40, M35)
GC235 has a very tough carbide substrate,
which provides extremely good edge security in toughness demanding operations.
The carbide is coated with a 2.5 micron
CVD coating of TiC- TiCN-TiN for added
wear resistance and lower friction.
GC235 is used as a complementary grade
for unstable conditions and low to moderate cutting speeds.
TiAIN
Ti (C,N)
Ti (C,N)
TiN
AICrN
TiAlN
GC1120 - (P40, M35, K25)
Fine grained cemented carbide with a good
balance between hardness and toughness.
The carbide is PVD coated with a 3 micron
layer of TiCN for added wear resistance. A
basic grade for peripheral inserts at low to
moderate cutting speeds in steel, austenitic
stainless steel and cast iron.
G
GC1210 - (P10, K10)
Hard and very wear resistant carbide substrate containing titanium based carbides,
which adds a very good hot hardness. The
carbide is coated with AlCrN giving excellent wear resistance and even better resistance against high cutting temperatures.
Ideal grade in Coromant Delta C for drilling
at medium to high speed in both cast iron
and steel.
E 87
Drilling
TiAIN
Ti (C,N)
Al2O3
Al2O3
Ti (C,N)
GC3040 - (P20, M20, K20, H15)
A cemented carbide with a high hardness
and toughness. A MT-CVD layer of TiCN
giving excellent abrasive wear resistance,
followed by a layer of Al2O3 giving very
good high temperature protection. The total
thickness is about 9 microns. The grade
is rst choice for peripheral drilling inserts
in most materials. Work very well at both
medium and high cutting speed.
Ti (C,N)
Ti (C,N)
Ti (C,N)
Al2O3
E 88
N20D - (N20)
A ne grained cemented carbide with an
excellent combination of both hardness
and toughness. The ne grains contribute
to keeping the cutting edge sharp throughout the entire tool life. The carbide is PVD
coated with smooth TiAlN adding wear
resistance and lowering adherence to work
material on the cutting edge.
First choice for Aluminum with a Silicon
content up to 12%.
Drilling
Basic grades
01 C8
Wear resistance
ANSI
ISO
10
C7
GC
3040
C6
30
GC
1020
1120
C5
GC
235
ANSI
20
30
Wear resistance
01 C4
10 C3
GC
3040
H13A
30
GC
1020
1120
Wear resistance
Basic grades
01 C4
10 C3
20 C2
30 C1
GC
1020
1120
GC
3040
40
H13A
ANSI
ISO
H
Hardened
materials
20
ANSI
30 C1
H13A
10
Basic grades
Toughness
20 C2
GC
1020
1120
Toughness
10 C3
ISO
Wear resistance
01 C4
ANSI
ISO
Non-ferrous
metals
Basic grades
Toughness
GC
1020
1120
20 C2
Wear resistance
Wear resistance
Basic grades
30 C1
Toughness
GC
235
GC
1020
1120
ANSI
H13A
GC
3040
Wear resistance
Cast iron
ISO
ISO
Stainless
Steel
10
Basic grades
50
40
Toughness
40
Toughness
Steel
20
E 89
Drilling
E 90