Eiph 2 3 5 6 en
Eiph 2 3 5 6 en
Eiph 2 3 5 6 en
EIPH3
EIPH5
EIPH6
Internal gear pumps
eckerle.com
Internal gear pump EIPH2
Type EIPH2 high pressure pump
with constant displacement volume
Characteristics
• Internal gear pump with axial and
radial gap compensation
• Radial compensation with segments
• Suction and pressure port radial
• Field of application: Industrial hydraulic
• Low noise
• Long time life
• Low pulsation (pressure pulsation ~2 %)
• Multi flow combinations
Technical Data:
Rated Size 004 005 006 008 011 013 016 019 022 025
Spec. volume Vth [cm3/rev]*** 4,2 5,4 6,4 7,9 10,9 13,3 15,8 19,3 22,2 25,2
Continuous operating pressure [bar]** 330 300 250 250
Peak operating pressure [bar]
350 300 280
max. 10 sec. 15% duty cycle**
Cut-in pressure peak [bar]** 400 325 300
* Measured in anechoic room of Eckerle Hydraulic Division; Axial microphone distance 1.0 m The pumps have no corrosion protection.
** For acceptable pressure at 400-1.800 rpm. Further rpm on request. The max. permissible values must not be applied
*** Due to manufacturing tolerances the displacement volume could vary. cumulatively. Please contact us.
**** 1 ½" suction port
2
Internal gear pump EIPH3
Type EIPH3 high pressure pump
with constant displacement volume
Characteristics
The series EIPH were developed particularly for the high requirements of industrial hydraulics.
Their favourable noise characteristic, extremely low delivery and pressure pulsation,
outstanding efficiency within broad revolution and viscosity ranges, have firmly established
gap-compensated high pressure internal gear pumps among high pressure pumps. Simple
combinability to multiple pumps with separate or common inlet is given.
The EIPH is a consistent advancement that already for over 40 years in the industry used gap-
compensated internal gear pump technology, System Eckerle.
Technical Data:
Rated Size 014 016 020 025 032 040 050 064
Spec. volume Vth [cm3/rev]*** 14,6 16,0 20,0 24,8 32,1 40,1 50,3 64,6
Continuous operating pressure [bar]** 330 280
Peak operating pressure [bar]
350 300
max. 10 sec. 15% duty cycle**
Cut-in pressure peak [bar]** 400 325
400 – 3.600 400 – 400 – 400 – 400 – 400 – 1.800
Nominal speed [min ] -1
* Measured in anechoic room of Eckerle Hydraulic Division; Axial microphone distance 1.0 m The pumps have no corrosion protection.
** For acceptable pressure at 400-1.800 rpm. Further rpm on request. The max. permissible values must not be applied
*** Due to manufacturing tolerances the displacement volume could vary. cumulatively. Please contact us.
**** 2" suction port
3
Internal gear pump EIPH5
Type EIPH5 high pressure pump
with constant displacement volume
Technical Data:
Min. admission pressure (intake side) [bar] 0,8 bar absolute (Start 0,6)
Life expectancy not less than 1x 107 load cycles against peak operating pressure
Efficiency η vol: 94 95 95
Efficiency η hm: 92 93 93
Pump noise*
69 70 71
(measured in sound chamber) dB[A]
4
Internal gear pump EIPH6
Type EIPH6 high pressure pump
with constant displacement volume
Technical Data:
Rated Size 040 050 064 080 100 125 160 200 250
Spec. volume Vth [cm3/rev]*** 40,8 50,6 65,3 80,0 101,2 125,7 160,1 200,9 249,9
Continuous operating pressure [bar]** 330 315 300 250 160 140
Min. admission pressure (intake side) [bar] 0,8 bar absolute (Start 0,6)
Life expectancy not less than 1x 107 load cycles against peak operating pressure
Efficiency η vol: 93 94 95 96
Efficiency η hm: 89 90 91
Pump noise*
72 73 74 75 76 77 78
(measured in sound chamber) dB[A]
* Measured in anechoic room of Eckerle Hydraulic Division; Axial microphone distance 1.0 m The pumps have no corrosion protection.
** For acceptable pressure at 400-1.800 rpm. Further rpm on request. The max. permissible values must not be ap-
*** Due to manufacturing tolerances the displacement volume could vary. plied cumulatively. Please contact us.
**** 1 ½" suction port.
5
Dimensions EIPH2
Pump with SAE-A-2-hole flange and cylindrical shaft Order example: EIPH2-___RK03-1X
rotation direction
shaft end
Size A F G H L M N O enlarged
004 71 50 55 59 38,1 17,5 14 M8x15 suction port*
suction port
005 71 50 55 59 38,1 17,5 14 M8x15
006 73 50 55 59 47,5 22 19 M10x16
008 76 50 55 59 47,5 22 19 M10x17
011 82 50 55 59 52,4 26,2 25 M10x17
013 87 50 55 60 52,4 26,2 25 M10x17
016 92 50 55 60 52,4 26,2 25 M10x17
019 99 55 61 65 52,4 26,2 25 M10x17
022 105 55 61 65 52,4 26,2 25 M10x17
* is suitable for speed controlled drive applications
025 111 55 61 65 52,4 26,2 25 M10x17 (available only for sizes 019, 022, 025)
Double pump with SAE-A-2-hole flange and cylindrical shaft Order example: EIPH2-___RK00-1X+
EIPH2-___RP30-1X
rotation direction
shaft end
Size A F G H
004 71 50 55 59 Intermediate suction port
005 71 50 55 59 primary pump primary pump
size 004-016 size 019-025
006 73 50 55 59
008 76 50 55 59
011 82 50 55 59
013 87 50 55 60
016 92 50 55 60
019 99 55 61 65
022 105 55 61 65
025 111 55 61 65
6
Dimensions EIPH3
Pump with SAE-B-2-hole flange and cylindrical shaft Order example: EIPH3-___RK23-1X
rotation direction
shaft end
enlarged
suction port suction port*
Size A B C D E F G H K L M N O
014 90,4 38,1 17,5 M8x15 14 64 65 67 57 52,4 26,2 25 M10x17
016 92,4 38,1 17,5 M8x15 14 64 65 67 57 52,4 26,2 25 M10x17
020 97,9 47,5 22 M10x17 18 64 65 67 57 58,7 30,2 32 M10x17
025 104,4 47,5 22 M10x17 18 64 65 67 57 58,7 30,2 32 M10x17
032 114,4 47,5 22 M10x17 18 64 65 67 57 58,7 30,2 32 M10x17
040 125,4 52,4 26,2 M10x17 20 70 73 79 63 58,7 30,2 32 M10x20
050 139,4 52,4 26,2 M10x17 20 70 73 79 63 58,7 30,2 32 M10x20
* is suitable for speed controlled drive applications
064 52,4 26,2 M10x17 20 70 73 79 63 58,7 30,2 32 M10x20 (available only for sizes 040, 050, 064)
Double pump with SAE-B-2-hole flange and cylindrical shaft Order example: EIPH3-___RK20-1X+
EIPH3-___RP30-1X
rotation direction
shaft end
7
Dimensions EIPH3/2
Double pump with SAE-B-2-hole flange and cylindrical shaft Order example: EIPH3-___RK20-1X+
EIPH2-___RP30-1X
rotation direction
shaft end
EIPH3 EIPH2
Size A F G H K Size AA FF GG HH
014 90,4 64 65 67 57 004 71 50 55 59
016 92,4 64 65 67 57 005 71 50 55 59
020 97,9 64 65 67 57 006 73 50 55 59
025 104,4 64 65 67 57 008 76 50 55 59
032 114,4 64 65 67 57 011 82 50 55 59
040 125,4 70 73 79 63 013 87 50 55 60
050 139,4 70 73 79 63 016 92 50 55 60
019 99 55 61 65
022 105 55 61 65
suction port
The single pumps of a multiple pump assembly are internally connected, even if you connect to the pump inlet.
It is therefore no operating with different fluids possible.
8
Dimensions EIPH5
Pump with SAE-C-2-hole flange and cylindrical shaft Order example: EIPH5-___RA23-1X
rotation direction
79±2
shaft end
86±2
suction port
size 064 and 080 size 100
Size A B C D E L M N
064 81 57,2* 27,8* M12x22 25,4 77,8 42,9 51
080 93 66,7* 31,8* M14x24 31,75 77,8 42,9 51
100 109 66,7* 31,8* M14x24 31,75 88,9 50,8 63,5
Double pump with SAE-C-2-hole flange and cylindrical shaft Order example: EIPH5-___SK23-1X+
EIPH3-___RP33-1X
rotation direction
79±2
79±2
shaft end
suction port S
S1 S2
EIPH3
Size AA BB CC DD EE FF KK LL MM NN
014 90,4 38,1 17,5 M8 14 64 57 52,4 26,2 25
016 92,4 38,1 17,5 M8 14 64 57 52,4 26,2 25
EIPH5
020 97,9 47,5 22 M10 18 64 57 58,7 30,2 32
Size A B C D E L M N 025 104,4 47,5 22 M10 18 64 57 58,7 30,2 32
064 81 5 7,2 27,8 M12x22 25,4 77,8 42,9 51 032 114,4 47,5 22 M10 18 64 57 58,7 30,2 32
080 93 66,7 31,8 M14x24 31,75 77,8 42,9 51 040 125,4 52,4 26,2 M10 20 70 63 58,7 30,2 32
100 109 66,7 31,8 M14x24 31,75 88,9 50,8 63,5 050 139,4 52,4 26,2 M10 20 70 63 58,7 30,2 32
9
Dimensions EIPH5
Pump with SAE-C-2-hole flange and splined shaft Order example: EIPH5-___RB23-1X
rotation direction
79±2
suction port S
Size A B C D E L M N
064 81 57,2* 27,8* M12x22 25,4 77,8 42,9 51
080 93 66,7* 31,8* M14x24 31,75 77,8 42,9 51
100 109 66,7* 31,8* M14x24 31,75 88,9 50,8 63,5
* Pressure port: SAE 518C, high pressure series (code 62)
Double pump with SAE-C-2-hole flange and splined shaft Order example: EIPH5-___SL23-1X+
EIPH3-___RE36-1X
rotation direction
79±2
86±2
suction port S
EIPH5
EIPH3
Size A B C D E L M N
064 81 57,2* 27,8* M12x22 25,4 77,8 42,9 51 NG AA
080 93 66,7* 31,8* M14x24 31,75 77,8 42,9 51 040 86
100 109 66,7* 31,8* M14x24 31,75 88,9 50,8 63,5 050 100
* Pressure port: SAE 518C, high pressure series (code 62)
10
Dimensions EIPH6
Pump with SAE-D-2-hole flange and cylindrical shaft Order example: EIPH6-___RK23-1X
rotation direction
shaft end
Double pump with SAE-D-2-hole flange and cylindrical shaft Order example: EIPH6-___RK20-1X+
EIPH6-___RP30-1X
rotation direction
shaft end
common
suction port
Size A
040 123
050 129
064 138
080 147
100 160
125 175
160 196 Above size 160 no common inlet possible
200 221
250 251
11
Dimensions EIPH6
Double pump with SAE-D-2-hole flange and cylindrical shaft Order example: EIPH6-___RK23-1X+
EIPH2-___RP30-1X
rotation direction
shaft end
EIPH6 EIPH2
Double pump with SAE-D-2-hole flange and cylindrical shaft Order example: EIPH6-___RK20-1X+
EIPH3-___RP30-1X
rotation direction
shaft end
common
EIPH6 EIPH3 suction port
Size A Size AA FF GG HH KK
040 123 014 90,4 64 65 67 57
050 129 016 92,4 64 65 67 57
064 138 020 97,9 64 65 67 57
080 147 025 104,4 64 65 67 57
100 160 032 114,4 64 65 67 57
125 175 040 125,4 70 73 79 63
160 196 050 139,4 70 73 79 63
200 221
Pressure connections see single pumps
250 251 Above size 160 no common inlet possible
12
Connecting flanges SAE EIPH
Article
Nr. number Type pmax AD A B C D E F G1 G2 H I L M
1a 07 07 04 0030 AD15-SAE12M22x1,5 315 15 M22x1,5 12 38,1 54 17,48 46 52 60 13 7 9 M8x25
7b 07 07 04 0041 EFG2 1/2-SAE212 160 G2 1/2" 63 88,9 114 50,8 105 50 25 30 13,5 M12x45
10b 07 07 04 0050 EFG3-SAE300-C 160 G3" 73 106,4 134 61,9 116 50 27 38 17,5 M16x50
13
Connecting flanges SAE EIPH
Version Version
Type Inlet Nr. a b Outlet Nr. a b
EIPH2-004-005 1/2" 1 • • 1/2" 1 • •
EIPH2-006-008 3/4" 2 • • 1/2" 1 • •
EIPH2-011-025 1" 3 • • 1/2" 1 • •
EIPH2-019-025 1 1/2" 5 • • 1/2" 1 • • 1)
Version
Type Inlet Nr. a b
EIPH2/2 till size 016 1" 3 • •
EIPH2/2 from size 019 1 1/4" 4 • •
EIPH3/2 1 1/2" • •
EIPH3/3 till size 032 1 1/2" 5 • •
EIPH3/3 from size 040 2" 6 •
EIPH6/6 3" ° °
EIPH6/3 3" ° °
• = available ° = on request
14
Ordering Code EIPH
Revision code
1st number: Change of mounting dimensions
2nd number: Change of pump with same
mounting dimensions
Fastening flange
: SAE/A 2-hole flange, centring collar Ø 82,55
0
2: SAE/B 2-hole flange, centring collar Ø 101,6
2: SAE/C 2-hole flange, centring collar Ø 127,0 at EIPH5
2: SAE/D 2-hole flange, centring collar Ø 152,4 at EIPH6
3: Direct fixture
5: VDMA on request
– other flanges on request –
Shaft end
A: Cylindrical
K: Cylindrical with spigot
B: SAE gear
L: SAE gear with spigot
E: Spigot tooth system on one side
P: S
pigot tooth system on both sides
Rotation direction
R: Clockwise
L: Anticlockwise
Rated size
Three digits
Overall size
2, 3, 5 or 6
Type
H: High pressure pump
Order example High pressure pump, overall size 2 with 15,8 cm3/U, clockwise rotation, cylindrical shaft
EIPH2-016RK03-1X with cone, SAE/B-2-hole flange connection, SAE flange connection,revision code 1X
15
Variable-speed operation
As a matter of principle, Eckerle internal gear pumps are eminently suited for variable speed operation. Even
at low viscosities and high temperatures of the pumping medium, the pumps run extremely energy efficiently
and highly dynamically over a wide speed range due to the radial and axial gap compensation.
However, with variable speed operation certain boundary conditions should be observed. The exemplary cycle
shown below illustrates this clearly.
250 2,5
Outlet pressure [bar]
200 2
100 1
50 0,5
0 0
Time [s] 0 1 2 3 4 5 6 7 8 9 10
3000
1500
Revoluons per
minute [min-1
-1500
-3000
16
EIPH
I. Start:
Eckerle internal gear pumps are able to build up pressure from standstill.
This happens smoothly when the pump starts from an unpressurized state.
Please talk to Eckerle, if due to the system design the pump is pressurized
at standstill.
V. Reverse operation:
Eckerle internal gear pumps are usually able to run highly dynamically in the
opposite direction of rotation in order to lower pressure peaks, or by means
of a hydraulic motor. However, it must be ensured that the output pressure is
always higher than the input pressure. 1) 3)
VI. Acceleration:
With Eckerle internal gear pumps very large speed-ups can be run. These are
limited by inlet pressure, geometry of the suction line and viscosity. However,
these may not drop below the specified minimum inlet pressure of the series. 1) 3)
1) See Characteristics
2) See Technical data
3) To avoid critical operating points, we recommend taking measurements of the pump’s inlet and outlet pressure near
the pump with a scanning rate of at least 1 kHz when a new pump cycle starts.
17
Characteristics EIPH2
Volume flow
[l/min]
[l/min]
flow [l/min]
flow [l/min]
Volume flow
Volume flow
Volume
Volume
Opera
onalpressure
Operational pressure [bar]
[bar] Opera
onalpressure
Operational pressure [bar]
[bar]
Level of efficiency
100% 100%
95%
95%
of efficiency [%]
of efficiency [%]
90%
90%
85%
of efficiency
of efficiency
80% 004 85% 013
005 016
75% 006 80% 019
Level
Level
008 022
70%
Level
Level
70%
60%
55% 65%
0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350
Operaonal pressure [bar] Operaonal pressure [bar]
Operational pressure [bar] Operational pressure [bar]
Driving power
[kW]
[kW]
power[kW]
power[kW]
power
power
Driving
Driving
Driving
Driving
[dB(A)]
[dB(A)]
[dB(A)]
airair
pressure ininairair
pressure inin
levelpressure
levelpressure
level
level
Sound
Sound
Sound
Sound
Operaonal pressure
Operational pressure[bar]
[bar] Operaonal pressure
Operational pressure [bar]
[bar]
18
EIPH3
Volume flow
[l/min]
[l/min]
flow [l/min]
flow[l/min]
Volume flow
Volume flow
Volume
Volume
Operational
Opera
onalpressure [bar]
pressure [bar] Opera
onalpressure
Operational pressure [bar]
[bar]
Level of efficiency
100% 100%
95%
95%
of efficiency [%]
of efficiency [%]
90%
of efficiency
of efficiency 90%
85%
014 032
016 040
80%
020 85% 050
Level
Level
025 064
Level
Level
75%
80%
70%
65% 75%
0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350
Operaonal pressure [bar] Operaonal pressure [bar]
Operational pressure [bar] Operational pressure [bar]
Driving power
power[kW]
power[kW]
[kW]
[kW]
power
power
Driving
Driving
Driving
Driving
Operaonal pressure
Operational pressure [bar]
[bar] Operaonal pressure
Operational pressure [bar]
[bar]
[dB(A)]
[dB(A)]
[dB(A)]
pressure ininairair
pressure ininairair
levelpressure
levelpressure
level
level
Sound
Sound
Sound
Sound
19
Characteristics EIPH5
Volume flow
Volumeflow
Volume [l/min]
flow [l/min]
Operaonal pressure
Operational pressure [bar]
[bar]
Level of efficiency
100%
95%
of efficiency [%]
90%
of efficiency
85% 064
080
Level
100
80%
Level
75%
70%
0 50 100 150 200 250 300
Operaonal pressure
Operational pressure [bar]
[bar]
Driving power
power
Driving
Driving [kW]
power[kW]
Operaonal pressure
Operational pressure [bar]
[bar]
20
EIPH6
Volume flow
[l/min]
[l/min]
flow [l/min]
flow [l/min]
Volumeflow
Volumeflow
Volume
Volume
Operational pressure
Operaonal pressure [bar]
[bar] Operaonal pressure
Operational pressure [bar]
[bar]
Level of efficiency
100% 100%
95% 95%
of efficiency [%]
of efficiency [%]
90% 90%
Level Wirkungsgrad
Level Wirkungsgrad
85% 040 85%
125
050
160
80% 064 80%
200
080
250
75% 100 75%
70% 70%
65% 65%
0 50 100 150 200 250 300 350 0 50 100 150 200 250
Betriebsdruck [bar] Betriebsdruck
Operational [bar] [bar]
pressure
Operational pressure [bar]
Driving power
[kW]
[kW]
power[kW]
power[kW]
power
power
Driving
Driving
Driving
Driving
Operaonal pressure
Operational pressure [bar]
[bar] Operaonal pressure
Operational pressure [bar]
[bar]
[dB(A)]
air[dB(A)]
air[dB(A)]
inair
inair
pressure in
pressure in
levelpressure
pressure
level
level
level
Sound
Sound
Sound
Sound
21
Characteristics
EIPH2
EIPH2
Nominal size 019, 022 and 025 including sucon port 1 1/2"
400
Permissible peak operaonal
350
300
pressure [bar]
250
200
150
100
50
0
0 500 1000 1500 2000 2500 3000 3500 4000 4500
Revoluons per minute [min -1]
Nominal size : 004/005/006 008 011/013 016 019/022 025
EIPH3
Nominal size 040, 050 und 064 including sucon port 2"
400
Permissible peak operaonal
350
300
pressure [bar]
250
200
150
100
50
0
0 500 1000 1500 2000 2500 3000 3500 4000
Revoluons per minute [min -1]
Nominal siz: 014/016 020 025 032 040 050 064
Peak operating pressures are permitted for a maximum of 10 seconds or 15% of the duty cycle
22
EIPH
EIPH5
EIPH5
350
Permissible peak operaonal
300
250
pressure [bar]
200
150
100
50
0
0 500 1000 1500 2000 2500 3000 3500
Revoluons per minute [min -1]
Nominal size: 064/080 100
EIPH6
400
Permissible peak operaonal
350
300
pressure [bar]
250
200
150
100
50
0
0 500 1000 1500 2000 2500
Revoluons per minute [min -1]
Nominal size: 040/050 064 080/100 125 160 200 250
23
For further information please visit:
eckerle.com
Artikel-Nr. 0202010183/0819/200