Raise Boring Heads: User Manual
Raise Boring Heads: User Manual
Raise Boring Heads: User Manual
User manual
R a i s e b o r i n g h e a d s – user manual
Contents
Different raise boring methods ............................................. 4
General recommended drilling parameters .......................... 6
Mounting of saddles ............................................................... 8
Gauge saddle system to reduce reamer diameter ................ 10
Mounting of stem .................................................................... 11
Mounting of cutters ................................................................ 13
Cutter positioning .................................................................... 14
Cutter positions ........................................................................ 17
Mounting of segments ............................................................ 20
Segment positioning ................................................................ 22
Transport dimensions and weights ....................................... 26
Inspection and service ............................................................. 30
Removal of stem ...................................................................... 31
Wear pad replacement ............................................................. 32
Re-greasing of cutters ............................................................. 33
Seal replacement ....................................................................... 35
Reports ...................................................................................... 36
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R a i s e b o r i n g h e a d s – user manual
Horisontal boring
• Access on two rock faces.
• Ø 0.6 – 4.5 m range.
• Used in civil construction in urban areas ex. cable tunnel,
escape tunnels, sewage tunnels etc.
• Rock stability important.
• Drill pipes under tension.
Blind boring
• Access on one rock face.
• Ø 0.6 – 1.8 m range.
• Used for slot raises, ore passes, manways.
• Drill pipes under compression.
• Needs drill pipe stabilisation.
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R a i s e b o r i n g h e a d s – user manual
Cutter maintenance
The raise boring cutter bearings are operating under
extreme conditions, exposed to constant high operating
loads, varying degree of uncontrolled shock loads in com-
bination with high temperatures.
It is of vital importance to use the recommended type of
lubricant suitable for these conditions and to relubricate the
cutters on a regular basis in order to obtain an optimum
cutter service life.
The interval between re-greasing needs to be more fre-
quent with increased temperature as the lubricant proper-
ties are affected by increased operating temperatures.
See page 33 for the re-greasing instruction.
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R a i s e b o r i n g h e a d s – user manual
Max recommended operating bit load ............3 tonnes (6 600 Lbs) x bit diameter in inches
Max recommended speed .................................60 RPM
The net bit load and drilling speed (RPM) is chosen de-
pending on rock characteristics ≤ max recommended bit
load and RPM.
Utilise the highest RPM the rock formation and the ma-
chine allows ≤ max recommended bit RPM together with
the correct bit load for optimum rate of penetration and bit
service life.
Reduce the RPM before reducing the bit load.
For optimum performance use sufficient flushing to clean
the hole and avoid regrinding of cuttings. Use min 800
litres/min of water for efficient flushing.
Note. Bit type SCMH is a selected bit for all rock formation. Approx. IADC code is 725.
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R a i s e b o r i n g h e a d s – user manual
Extendable head
CRH10E
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R a i s e b o r i n g h e a d s – user manual
Mounting of saddles
The positions are marked on the side of the head
1 frame. If there are two position marks, the upper
one refers to the position nearest the head centre.
Dowel pins locate the saddles in the correct position.
Bolt 7008-9134-01
Lock washer
7008-9135-01
Nut 7008-9135
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R a i s e b o r i n g h e a d s – user manual
Mounting of saddles
Different saddle types are used depending on positioning A special inner saddle, 7008-2013, is used to move cutter in
and the reaming head type. The most frequent dressings position 1 closer to the pilot hole when required and is used
as per the illustration below. The part numbers are 7008- to keep a maximum spacing to obtain efficient spalling into
2XXX (some additional saddles modified for small diam- the pilot hole. (See illustration below).
eters reaming heads are not shown below). The number of Saddle 7008-2013 is required in position 1 when :
the different types varies with the reaming head diameter - Ø 9 / 9 7/8″ stem is used in reaming heads with 340 mm
and type. stem fit,
A new and improved gauge saddle system is implemented - Ø 12 1/4″ stem is used in reaming heads with Ø 360 mm
on all “D” type reaming heads to make it possible to stem fit (exception CRH10SE),
reduce the reamer diameter by changing the gauge saddles - Ø 13 3/4″ stem is used in reaming heads with Ø 390 mm
only. See page 10 for more detailed information. stem fit (exception CRH12E).
CRH 12E
-2030 -2008 -2005 -2006
-2006
-2013
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R a i s e b o r i n g h e a d s – user manual
Mounting of saddles
Gauge saddle system with reduced reamer diameter option
The gauge saddle system on “D”-type reaming heads
Diameter Saddle Marking on saddle side
makes it possible to reduce the reamer diameter in two
step No part No
steps by changing the gauge saddles only (see illustrations).
This option is valid on all Sandvik reaming heads that
I 7008-2024 ○ – one hole drilled
takes gauge saddles type 7008-2024 or 7008-2030. This
option can be used in a long raise with heavy gauge button II 7008-2025 ○○ – two holes drilled
wear and makes it easier to reach the rock face again after III 7008-2026 ○○○ – three holes drilled
lowering the reaming head for any service. The “D”-type I 7008-2030 ○ – one hole drilled
gauge saddles have different part numbers and markings
II 7008-2031 ○○ – two holes drilled
(see table and illustrations) in order to reduce the risk of
mixing different types on the same reamer. III 7008-2032 ○○○ – three holes drilled
STEP 1 D
Marking STEP I
STEP 2 D - 21 mm
Marking STEP II
STEP 3 D - 42 mm
Important!
Make sure to use four gauge saddles
of the same type (same part no and
marking) together on the reamer at
all times to keep the correct profile.
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R a i s e b o r i n g h e a d s – user manual
Mounting of stem
1 2
Place the head on its side. Clean the centre hole. Use a suitable solvent to remove the
rust protection. Apply a lot of grease before fitting the stem.
3 4
Insert the stem. Put a rod through the stem for easier Push the stem into position.
handling. Clean and put a lot of grease on the inlet part of Oil the bolts. Pre-tighten the bolt crosswise to 800 Nm.
the stem. Use ordinary machine grease (0.5 kg). Tighten to full torque 1200 Nm.
Bolt 7008-9134-01
5 Lock washer
7008-9135-01
Nut 7008-9135
Clean the O-ring groove in the retainer ring and insert the
O-ring.
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R a i s e b o r i n g h e a d s – user manual
Mounting of stem
6 7
Clean the seal seat. Slide the V-ring over the top of the stem Apply silicone sealant on top of the V-ring around the stem.
and push it into position. Note. Do not use the V-ring in Lower the retainer ring over the stem into position. Make
reaming head CRH3 and CRH4. sure both seals are properly seated.
8 O-ring 9
V-ring
10
Seal retainer
7008-9380 340
7008-9381 360
7008-9398 390
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R a i s e b o r i n g h e a d s – user manual
Mounting of cutters
1 2
The positions are marked on the side of the head frame. If Lift the cutters into position. See table on page 14-16
there are two position marks, the upper one refers to the for correct positioning.
position nearest the head centre.
3 Bolt 7008-9119 4
Cutter
Saddle
Nord-Lock washer
7008-4341-19
Nut 7008-9120
Put some oil on the bolt before tightening. Tighten to 300 Nm.
Row 5
Row 1 Row 1
CMR 41 CMR 52
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R a i s e b o r i n g h e a d s – user manual
Mounting of cutters
The cutters are to be placed in different positions, depending on which spacing is required.
25,5 mm spacing is recommended for medium to hard rock, 51 mm spacing is recommended for soft
rock.
Note! Cutter positioning when saddle 7008-2013 is used in position 1 (when a Ø 9″, 9 7/8″ stem is used in a reaming head
with Ø 340 mm stem fit or when a Ø 12 1/4″ stem is used in a reaming head with Ø 360 mm stem fit):
25,5 mm spacing: pos. 1, CMR 52; pos. 2, CMR 52.
51 mm spacing: pos. 1, CMR 52; pos. 2, CMR 41.
For cutter mounting of other Sandvik cutter types, consult your local Sandvik representative.
* CRH 3 Ø 950 mm, part number 7008-1009-30, is designed for 7 7/8″ stem only!
** CRH 3 Ø 1084 mm, part number 7008-1311-30, is designed for 9″ or 9 7/8″ stems and CMR 41-27 / CMR 52-27
cutters only!
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R a i s e b o r i n g h e a d s – user manual
Mounting of cutters
The cutters are to be placed in different positions, depending on which spacing is required.
25,5 mm spacing is recommended for medium to hard rock, 51 mm spacing is recommended for soft
rock.
CRH 10ED
Reamer base 7008-1440-20, Ø360 stem fit and 7008-1340-20, Ø390 stem fit
Reaming Head No. of Type of Position Position
head type dia. cutters cutter 25.5 mm spacing 51 mm spacing
mm
CRH 10SE
Reamer base 7008-1630-20, Ø360 stem fit
Reaming Head No. of Type of Position Position
head type dia. cutters cutter 25.5 mm spacing 51 mm spacing
mm
Note!
Cutter positioning when saddle 7008-2013 is used in position 1 (when a Ø 12 1/4″ stem is used in a reaming head with Ø
360 mm stem fit with exception for CRH10SE or when a Ø 13 3/4″ stem is used in a reaming head with Ø 390 mm stem
fit with exception for CRH12SE):
25,5 mm spacing: pos. 1, CMR 52; pos. 2, CMR 52.
51 mm spacing: pos. 1, CMR 52; pos. 2, CMR 41.
For cutter mounting of other Sandvik cutter types, consult your local Sandvik representative.
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R a i s e b o r i n g h e a d s – user manual
Mounting of cutters
The cutters are to be placed in different positions, depending on which spacing is required.
25,5 mm spacing is recommended for medium to hard rock, 51 mm spacing is recommended for soft
rock.
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R a i s e b o r i n g h e a d s – user manual
Mounting of cutters
CRH 2 CRH 3 CRH 4 CRH 5 CRH 6
Ø 660/26″ Ø 950/37 ″ Ø 1420/56″ Ø 1524/60 ″ Ø 1829/72″
Ø 1060/42″ 9
Ø 1084/43″ 5
8 4 5
6 4
1 3 2
1 2 8 10
1 2 3 4 1 2 1 3
2 7 3 6
4 6
5 7
13
6 4 11 16 6 7
1
1 4 10
2 9 3
2
12 3 5 8 5 14
16 9 8
15
11
15
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R a i s e b o r i n g h e a d s – user manual
Mounting of cutters
CRH 10E
Ø 3130/123″ Ø 3500/138 ″ 17
Ø 3824/151″ 20
16 12 16 16
13 12 12
9 9 9
7 7 7
1 1 18 19 1 17
6 4 6 4 6 4
5 3 5 3 5
3 2 2 21
2 20 18
8 8 8
10 10 10
15 11 14 11 14
11 14
19
22
CRH 10ED
18
Ø 3500/138 ″ 16 Ø 3687/145″
12 13B 14 12
9 9
7 7
1 17 1 15
6 4 17 6 4
3 5 3 5 19
15 2 2
16
8 8
10 10
14B 11 11 13 21
20
18
20
14 12
Ø 3824/151″ 12 13B Ø 4042/159 ″
9 9
7 17 7
16 1 15
19 1 4 4
6 20 6
3 5 3 5 22
15 2 17 2
16
8 8 18
10 10
14B 11 11 13
18
19
CRH 10SE
Ø 3047/120 ″ Ø 3372/133″ Ø 3696/146″
15
9 12
14 7
6 1
4 16
18 3
2 5
8
13
11 10
17
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R a i s e b o r i n g h e a d s – user manual
Mounting of cutters
CRH 12E
Ø 3534/139 ″ Ø 3840/151″ Ø 4146/163″
18
13 15 22 19
16 17 18 13 19 13
10 10 10
5 8
5 8 5 8
2 3 2 3 2 3
15 11
12 11 12 11
4 12 4 16
4 1 1 1 6
6 7 6 7
7
9 9 9
15 18 17 14 20 14
14 16 21 20
17
8 8 5 8
5 5 2
2 3 2 3 3
18 12 11 17 18 12 11 17 18 12 11 17
4 1 4 1 4 1
6 6 6
7 7 7
9 14 9 14 9 14
15 15
21 15 24
23 26 26
20 20 23
20
22 22
Ø 5520/217 ″ 31 Ø 5876/231″ 31
28
30 25
27 24
19
28 34 35
22 19
22
16
13 10
16
13 10
8 8
5
2 5
3 2 3
26 18 12 11 17 25 24 18 12 11 17 23
4 1 4 1
7 6 7 6
9 14 9 14
15 15
21
21 20
20
30 23 29 33 36
29
26
27
32 32
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R a i s e b o r i n g h e a d s – user manual
Mounting of segments
CRH 6S, 7S, 8S, 10SD
CRH 10E, 10ED, 10SE Segment
Segmented heads are designed in order to facilitate
transportation through narrow openings. The reamer base
is transported with the segments dismounted until the col- Reamer base
laring site is reached.
1 2
Clean all contact surfaces. Oil bolts, nuts, wedge and slot- Fit the upper wedge.
wedge. Hook the segment on to the head as shown. Start to 7008-9134
tighten the upper wedge joint.
Bolt 7008-9134-01
3 4 Lock washer
7008-9135-01
Nut 7008-9135
Fit the slot wedge. Tighten all bolt joints to 2/3 torque Complete the segment assembly by tightening the bolt/nut
(≈800 Nm). Tighten to full torque 1200 Nm. Begin with joints. Start with 2/3 torque (≈800 Nm). Tighten to full
upper wedge. Repeat on slot-wedge. torque 1200 Nm.
Example of tool combination see page 8.
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R a i s e b o r i n g h e a d s – user manual
Mounting of segments
Segment positioning on CRH 10E
Reamer base 7008-1031-20, Ø360 stem fit and 7008-1331-20, Ø390 stem fit
Reaming Head No. of No. of Segment Segment Segment
head type dia. cutters segments part number part number part number
mm
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R a i s e b o r i n g h e a d s – user manual
Mounting of segments
Segment positioning
CRH 10E
Ø 3130 Ø 3500 Ø 3824 20 -2111
17 -2109
16 12 16 16
13 12 12
-2110 -2110
9 9 9
7 7 7
1 1 18 19 1 17
6 4 6 4 6 4
5 3 5 3 5
3 2 2 21
2 20 18
8 8 8
10 10 10
11 11
-2109
15 11 14 14
14
19
22
CRH 10ED
-2109 18 -2153
Ø 3500 16 Ø 3687
12 13B 14 12
-2110 -2152
9 9
7 7
1 17 1 15
6 4 17 6 4
3 5 3 5 19
15 2 2
16
8 8
10 10
14B 11 11 13
21
18 -2144
20 -2111 20
18
19
-2134
Ø 3047 Ø 3372 15 Ø 3696 -2135
-2135
-2136
-2138
9 12
14 7
6 1
4 16
18 3
2 5
8
13
11 10
17
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R a i s e b o r i n g h e a d s – user manual
Mounting of segments
CRH 12E
Reamer base
Segments
Lock washer
Bolt 7008-9134-01 7008-9135-01
Nut
7008-9135
Clean all contact surfaces, oil Begin with the wedge in the middle Use the slot-wedge bolts if it is
bolts, nuts and wedges. Hook and work your way outwards. Tighten impossible to mount the bolts
the segments on to the head as the bolts to 2/3 torque (800 Nm). at the bottom of the segments.
shown. Start to tighten the upper Continue with the bolt joints on the Example of tool combination see
wedge joints. sides and at the bottom of the seg- page 8.
ments. Tighten to 2/3 torque(800 Nm).
Tighten to full torque (1200 Nm). Use
the same sequense as when tightening
to 2/3 torque.
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R a i s e b o r i n g h e a d s – user manual
Mounting of segments
Segment positioning on CRH 12E
Reamer base 7008-1338-20, Ø390 stem fit
Reaming Head No. of No. of Segment (small) Segment (large)
head type dia. cutters segments part number part number
mm
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R a i s e b o r i n g h e a d s – user manual
Mounting of segments
CRH 12E
Ø 3534 Ø 3840 -2151 Ø 4146 -2162
-2164
18
13 15 22 19
16 17 18 13 19 13
10 10 10
-2150 -2150 -2161
5 8
5 8 5 8
2 3 2 3 2 3
15 11
12 11 12 11
4 12 4 16
4 1 1 1 6
6 7 6 7
7
9 9 9
15 18 17 14 20 14
14 16 21 20
17
9 14 9 14 9 14
15 15
21 15 24
23 26 26
20 20 23
20
22 22
9 14 9 14
15 15
21
21 20
20
30 23 29 33 36
29
26
27
32 32
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R a i s e b o r i n g h e a d s – user manual
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R a i s e b o r i n g h e a d s – user manual
CRH 10SD reamer base 1560 500 926 2700 4950 8750***
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R a i s e b o r i n g h e a d s – user manual
Reamer base CRH 10E 3130 2140 590 1015 2600 7700
Segment – 2109 3500 and 3824 610 375
Segment – 2110 3500 and 3824 720 825
Segment – 2111 3824 610 500
Reamer base CRH 10ED - 2140 590 1015 2600 7550
Segment – 2144 4042 610 750
Segment – 2145 4042 965 1625
Segment – 2152 3687 785 1050
Segment – 2153 3687 610 550
Reamer base CRH 10SE - 1560 590 1015 2600 6725
Segment – 2134 3047 815 700
Segment – 2135 3372 and 3696 950 1250
Segment – 2136 3372 and 3696 610 400
Segment – 2138 3696 610 500
Stem Ø 12 1/4" – 40 2100 1300
Stem Ø 13 3/4" – 40 2700 1800
Stem Ø 15" – 50 3100 2400
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R a i s e b o r i n g h e a d s – user manual
CRH 12E A B C D E F G H I
Ø 3534 2200 1600 1105 1530 3100 2470 910 645 990
Ø 3840 2200 1600 1105 1530 3100 2800 1145 645 990
Ø 4100 2200 1600 1105 1530 3100 3000 1155 925 990
Ø 4500 2200 1600 1105 1530 3100 3230 1470 1140 990
Ø 5000 2200 1600 1105 1530 3100 3550 1700 1190 990
Ø 5100 2200 1600 1105 1530 3100 3550 1700 1215 990
Ø 5520 2200 1600 1105 1530 3100 3810 1975 1783 990
Ø 5876 2200 1600 1105 1530 3100 4090 2170 1783 990
Stem Ø 13 3/4" – 50 2700
Stem Ø 15" – 50 3100
Reaming Weight
head Reamer base Large segment Small segment Ø 15" Complete incl. base,
CRH 12E kg/pce incl. saddles kg/pce incl. saddles kg/pce incl. saddles Stem, kg segments and stem, kg
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R a i s e b o r i n g h e a d s – user manual
Inspection
In order to keeep your reaming head in good working
conditioning we recommend an inspection after each raise.
Cutter serial number is found on the shaft end of the narrow part of The stem is marked at the bot- Head serial number is found on
the cutter and on the ball plug retainer. tom flange and on the thread top. one side of the head frame.
Cutter gauge 7008-9445 for measuring of button wear over the gauge button row of the cutters. The figures tell you the
percentage of the protrosion left.
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R a i s e b o r i n g h e a d s – user manual
Removal of stem
1 2
Remove the inner saddles from position 1 and 2. Dismount the seal retainer ring. Use the two releasing holes
Use the tool combination on page 8. and tighten cross-wise until the retainer ring comes loose.
3 4
Dismount the twelve clamping bolts. Remove the protection Put a rod through the stem and attach the lifting equipment.
bolts from the jacking holes in the stem flange. Insert four Pull the stem out.
of the loose bolts and tighten cross-wise until the stem is
released.
Important!
When the stem and the saddles are
reassembled, new bolts and nuts must
be used.
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R a i s e b o r i n g h e a d s – user manual
1 2
Remove the worn out wear pads by grinding away the Fix the wear pads in position with clamps. Important!
welding joint. Pre-heat the area where the wear pads are to Make sure the ID of the wear pad corresponds with the OD
be welded to 370-450° C. Should the temperature drop to of the stem.
below 370°. Reheat before continuing.
3 4
Tack weld the pads to the stem. Fill the welding points properly using our recommended
welding wire.After welding, the diameter over the wear pads
must be checked. If some peeks exceed D-max, grind with a
5 silicon carbide grinding wheel.
17 7/8" 200
19" 228
19 7/8" 251
11" 280
12 1/4" 311
13 3/4" 349
Make the welding joints ± 10 mm longer than the wear pad 15" 381
and end with a smooth finish.
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R a i s e b o r i n g h e a d s – user manual
Re-greasing of cutters
1 2
Remove the plastic protection cup and the snap ring. Pull out the ball plug retainer.
3 4
Remove the conical plugs (7008-9257) from the seal Clean the centre hole carefully. Install the re-greasing plug
retainers. Use proper allen key wrench (7008-9447). and attach the grease gun.
5 6
Start pumping until grease comes out through one of the Rotate the cutter 20 revolutions. Continue to pump until
relief holes. Clean the thread and mount the plug. Put some grease comes out through the other relief hole. Mount a
Loctite222 on the thread before tightening. Use the allen conical plug in this hole in the same way.
key wrench.
7
Spares for re-greasing/ cutter
2 7008-9115 O-ring
2 7008-9257 Conical plug
1 7008-9114 Snap ring
1 7008-9482 Protection plug
Re-install the ball plug retainer. Mount a new snap ring 1 7008-9132-01 Cutter grease 0,4 kg tube
and a plastic protection cap together with new o-rings.
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R a i s e b o r i n g h e a d s – user manual
Re-greasing option
If it is not possible to re-grease the cutter through the
centre hole as described on page 33, we recommend to
re-grease the cutter through the seal retainer.
1 2
Disconnect the two conical plugs in the seal retainers. Mount Attach a grease pump and start pumping.
a grease nipple in one of the holes.
34
R a i s e b o r i n g h e a d s – user manual
Seal replacement
1 2 3
Cut the four welding joints on the seal Remove the snap ring 7008-9111. Use a Make a puller tool by using two bolts, nuts
retainer. Use a small cutting disc. Remove hammer and a small chisel. Fill the cutter and a small U-beam. Tack weld the two
protection ring 7008-9113. with grease before dismantling the seals to bolts to the retainer ring. Remove the retainer
avoid dirt coming into the bearing system. ring by tightening the nuts and tapping the
retainer ring with a hammer. The retainer
ring can be reused if it is not damaged.
4 5 6
Remove the two seal halves from both the Clean the snap ring groove, the O-ring Inspect the retainer pin 7008-9118. Re-
retainer ring and the cutter shell. groove and the seal seat carefully. Ensure place if showing excessive wear.
Remove the O-ring 7008-9112 from the that the seal seat is in good condition. If not,
journal. file the marks and nicks. Make sure no
muck or dirt comes in to the bearing system.
7 8 9
Install the two seal halves (7008-9110) in Mount the O-ring 7008-9112. Mount the Mount the protection ring 7008-9113 and
both the retainer ring and the cutter shell. retainer ring carefully. E.g. use a hammer weld four joints 90° apart. Use MIG weld-
Important! Follow the mounting instruc- and clamp for smooth mounting. Mount the ing. Recommended welding wire Ø 1,2 mm
tions from the seal manufacturer carefully. snap ring 7008-9111. Note! Always use a OK AUT-ROD 12,51 or similar.
Instructions can be obtained from your local new O-ring and snap ring.
Sandvik representative.
2 7008-9110 Seal
2 7008-9101 Seal retainer
2 7008-9111 Snap ring
2 7008-9115 O-ring
Re-grease the cutter according to the re- 1 7008-9113 Lock ring
greasing instruction. This completes the seal
change.
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R a i s e b o r i n g h e a d s – user manual
Inspection report
Raise No.: Date:
Reaming head: CRH Dia.: mm
Reaming head No:
Stem dia.: mm
Stem No.:
Other: Sign:
11
12
13
14
15
16
17
18
19
10
11
12
13
14
15
16
36
Visual inspection – Cutter
11
12
13
14
15
16
17
18
19
10
11
12
13
14
15
16
Notes:
R a i s e b o r i n g h e a d s – user manual
37
38
Visual inspection – Full area boring equipment
Notes:
Sandvik Mining and Construction Tools AB
SE-811 81 Sandviken, Sweden. Tel +46 26 26 20 00 Fax +46 26 26 23 00
HR-13121