Radial piston hydraulic motor
Hägglunds Quantum Power
FEATURES
• Very high energy efciency
• High power density
• High torque density
• High speed
• Flexible, many sizes, few mechanical interfaces
• Insensitive for shock loads
• Very low moment of inertia
• Small footprint (total occupied volume)
• Freewheeling possibility
• Through hole diameter up to 170 mm
• Tandem mounting possibility
VALID FOR
• Torque range: up to 370 kNm [up to 272 898 lb-ft]
• Speed:range: up to 170 rpm
• Power range: up to 2600 kW
• Maximum operating pressure: 350 bar [5 076 psi]
• Frame size: 280, 400, 560, 840 and 1120
• Displacement: 10 100 to 70 400 cm3/rev
[616 to 4 290 in3/rev]
• Specic torque: 160 to 1120 Nm/bar
[8 136 to 56 952 ft-lbs/1 000 psi]
RE 15428-B, 10-2023 Replaces: RE 15428 05-2023
Bosch Rexroth AB
2 Hägglunds Quantum Power| Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Radial piston hydraulic motor | Hägglunds Quantum Power 3
RE 15428-B, 10-2023, Bosch Rexroth AB
CONTENTS
1 Ordering code ..................................................4
2 Functional description .....................................6
3 Fluid connections.............................................7
3.1 Hydraulic symbol ............................................... 7
3.2 Port connections ................................................ 8
4 Technical data ..................................................9
4.1 Calculation fundamentals .................................. 9
4.2 General data .................................................... 10
4.3 Motor data ...................................................... 12
4.4 Recommended charge pressure ....................... 14
4.4.1 The motor working in driving mode only .......... 14
4.4.2 The motor working in braking mode ................. 14
................................................ 17
............................................. 18
4.7 Pressure loss diagrams .................................... 28
4.8 Quick selection diagram ................................... 33
..... 34
4.9.1 Horizontal mounting ....................................... 34
4.9.2 Vertical mounting ............................................. 35
4.10 Flushing ........................................................... 36
4.11 External leakage ............................................... 37
4.12 Viscosity factor K ............................................. 37
4.13 Freewheeling .................................................. 38
4.13.1 The function of freewheeling ........................... 38
4.13.2 Circuit design ................................................... 38
4.13.3 Oil volume for freewheeling ............................ 39
4.13.4 Power loss freewheeling .................................. 40
4.14 Permissible external loads ............................... 41
4.14.1 External load with torque arm mounting .......... 41
4.14.2 Permissible external dynamic loads ................. 42
5 Increased robustness .....................................47
6 Through hole kit .............................................47
7 Type of seal ....................................................48
8 Speed sensor .................................................49
8.1 Inductive speed sensor SPDE ........................... 49
8.2 Speed sensor SPDC ......................................... 50
8.3 Explosion proof speed sensor SPDB 2 ............. 51
8.4 Absolute Rotary Encoder, ABRA ....................... 52
9 Temperature sensor .......................................53
10 Explosive environment ..................................54
11 Painting system..............................................54
12 Painting colour ..............................................54
13 Dimensions / Interface ................................... 55
13.1 Dimensions ...................................................... 55
14 Mounting alternatives ....................................60
14.1 General information ......................................... 60
14.1.1 Flange mounting with splines .......................... 60
14.1.2 Torque arm mounting with splines ................... 62
14.1.3 Torque arm mounting on plain shaft ............... 63
15 Accessories .................................................... 64
15.1 Torque arms ..................................................... 64
15.2 Early warning kit ............................................. 65
15.3 Coupling adapter for QMP 1120 ...................... 66
15.4 Valves .............................................................. 67
15.4.1 Cross-over valve, COCC 1200 ........................... 67
15.4.2 Freewheeling valve VFWCB 600 ....................... 67
15.5 Hägglunds BICA ............................................... 68
15.6 Kit for harsh and marine environment .............. 69
16 Circuit design .................................................70
16.1 Closed circuit................................................... 70
16.2 Open circuit ..................................................... 71
17 Related documents ........................................72
4 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
1 Ordering code
In order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be
stated in full in all correspondence e.g. when ordering spare parts.
Example Hägglunds Quantum Power motor:
HD - QM P - 1120 - 0920 - S C A C 0 - N 00 1 0 - 3 2002 - A 00
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18
01 Brand
Hägglunds HD
02 Motor series
Quantum QM
03 Feature
Power P
04 Frame size
280 0280
400 0400
560 0560
840 0840
1120 1120
05 Nominal size , specic torque, Nm/bar
Frame size 280 0160 0200 0240 0280
● ● ● ●
Frame size 400 0240 0280 0320 0360 0400 0440 0480 0520 0560
● ● ● ● ● ● ● ● ●
Frame size 560 0440 0480 0520 0560
● ● ● ●
Frame size 840 0600 0640 0680 0720 0760 0800 0840
● ● ● ● ● ● ●
Frame size 1120 0880 0920 0960 1000 1040 1080 1120
● ● ● ● ● ● ●
06 Mounting alternatives,
drive shaft
H
Hydraulic shrink disc
C
Mechanical shrink disc
S
Splines
Frame size 280 ● ● ●
Frame size 400 ● ● ●
Frame size 560 ● ● ●
Frame size 840 ● ● ●
Frame size 1120 — — ●
07 Mounting alternatives, motor case 280 400 560 840 1120
Front ange
1)
● ● — — — F
Center ange — — ● ● ● C
08 Motor prepared for tandem kit
No A
Yes
2)
B
Radial piston hydraulic motor | Hägglunds Quantum Power 5
RE 15428-B, 10-2023, Bosch Rexroth AB
09 Increased robustness
No — 0
Yes ● C
10 Through hole kit
No 0
Yes H
11 Type of seal
NBR (Nitrile) N
FPM (Viton) V
12 Speed sensor
No 00
SPDE 11
SPDC 21
SPDB2 1000 puls/rev 31
SPDB2 3600 puls/rev 32
13 Temperature sensor
No — 0
Yes ● 1
14 Explosive environment
Non explosive environment 0
Motor approved for ATEX gas group IIB 1
Motor approved for ATEX gas group IIC 2
15 Painting system
C3 (corrosivity category medium) 3
C5 (corrosivity category very high) 5
CX (corrosivity category extreme) X
16 Painting colour
std RAL 2002 2002
Special RAL 1000 - 9023 **)Specify with RAL colour code **
17 Modication
A
18 Design
Standard 00
Special index 01-99
● = Available
– Not available
2)
TA kit must be ordered separately
6 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Bosch Rexroth‘s hydraulic industrial motor Hägglunds
Quantum Power (QMP) is of the radial piston type with a
rotating cylinder block/hollow shaft and a stationary hous-
in the housing. An even number of pistons are radially
located in bores inside the cylinder block, and the distrib-
utor directs the incoming and outgoing oil to and from the
working pistons. Each piston is working against a cam
roller.
1
2
3
4
5
9
11
8
10
When the hydraulic pressure is acting on the pistons, the
cam rollers are pushed against the slope on the cam ring
that is rigidly connected to the housing, thereby producing
a torque. The cam rollers transfer the reaction force to the
pistons which are guided in the cylinder block. Rotation
therefore occurs, and the torque available is proportional
to the pressure in the system.
Oil main lines are connected to ports A and C in the con-
nection housing and drain lines to one of the D -ports in
the motor housing. (See 3.2 Port connections)
The motor is connected to the shaft of the driven machine
through the hollow shaft or spline of the cylinder block.
Quality
To assure our quality we maintain a Quality Assurance
Fig. 1: Section view of radial piston hydraulic motor QMP
2 Functional description
1. Cam ring
2. Cam roller
3. Piston
4. Shrink disk
5. Cylinder block, hollow
shaft
6. Cylinder block, spline
7. Housing cover
8. Cylindrical roller bearing
9. Connection housing
10. Distributor
11. Combined axial and
radial bearing
12. Wear ring
13. Seal retainer
Shaft side
Connection
side
6
7
12
12
13
13
23-09-12-01
8 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 3: Hydraulic connection Quantum Power
Shaft side of
Quantum Power
Table 1: Port dimensions
Connection Description Dimensions Remarks
A1, A2, A3, A4 Main connection 2" *
If A is used as the inlet, the motor shaft rotates
counterclockwise, viewed from the motor shaft side.
C1, C2, C3, C4 Main connection 2" *
If C is used as the inlet, the motor shaft rotates
clockwise, viewed from the motor shaft side.
D1 Drain connection G 1 1/4"
D2, D3, D4, D5 Alternative drain connection G 1 1/4"
T1 Test connection G 1/4"
Used to measure pressure and/or temperature at the
main connections. Minimess M16
T2 Test connection G 1/4"
Used to measure pressure in motor casing by mounting
pressure transducer R901066595.
T3 Temperature sensor PT100 G 1/4" Used to measure temperature in motor casing.
T4A, T4C Pressure connection G 1/2" Connection for double ended torque arm.
T5 Test connection G 1/4"
Normally plugged at delivery. Used to measure pressure
and/or temperature at the main connections.
T7, T9 Alternative magnetic plug connection 1 1/16-12-UN-2B Normally plugged at delivery
T8 Magnetic plug 1 1/16-12-UN-2B Used to monitor impurities in the oil
F1, F2 Flushing connections G 1/4"
*SAE flange J 518 , code 62, 420 bar (6000 psi).
All connections are normally plugged at delivery.
3.2 Port connections
A1, A2, A3, A4
C1, C2, C3, C4
Connection side of
Quantum Power
230920-02
230920-03
Radial piston hydraulic motor | Hägglunds Quantum Power 9
RE 15428-B, 10-2023, Bosch Rexroth AB
4 Technical data
4.1 Calculation fundamentals
Table 2: Calculation fundamentals.
Quantity Symbol Metric US
Power P = kW hp
Output torque T = Nm lbf·ft
Specific torque T
s
= Nm/bar lbf·ft/1000 psi
Rotational speed n = rpm rpm
Required pressure p = bar psi
Pressure loss
l
= bar psi
Charge pressure p
c
= bar psi
Flow rate required q = l/min gpm
Total volumetric loss q
l
= l/min gpm
Displacement V
i
= cm
3
/rev in
3
/rev
Mechanical
efficiency
m
= 0,98
1)
1)
Not valid as starting efficiency
Metric US
Output power P=
(kW) on driven shaft P=
(hp) on driven shaft
9549 5252
Output torque
m
=98%)
T= T
s
l
-p
c
m
(Nm) T=
T
s
l
-p
c
m
1000
Pressure required
m
=98%)
p=
T
l
+p
c
(bar) p=
l
+p
c
(psi)
T
s
m
T
s
m
Flow rate required q=
i
+q
l
(l/min) q=
i
+q
l
(gpm)
1000 231
Output speed n=
q - q
l
(rpm) n=
q - q
l
(rpm)
V
i
V
i
Inlet power P
in
=
c
)
(kW) P
in
=
c
)
(hp)
600 1714
10 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Table 3: General data Quantum Power (metric)
Frame size
QMP 280 QMP 400 QMP 560 QMP 840 QMP 1120
Type of mounting See section 14: Mounting alternatives
Port connections See section 3.2: Port connections
External loads See section 4.14: Permissible external loads
See section 4.5: Hydraulic fluids
Pressure Maximum operating pressure
1)
bar 350 350
4)
350 350 350
Maximum peak pressure
2)
bar 420 420 420 420 420
Charge pressure bar See section 4.4: Recommended charge pressure
Maximum case pressure bar 3 3 3 3 3
Maximum case peak pressure
3)
bar 8 8 8 8 8
Temperature limits of case drain oil
Seal type: NBR (Nitrile)
Minimum °C -35 -35 -35 -35 -35
Maximum °C +70 +70 +70 +70 +70
Seal type: FPM
(Viton)
Minimum °C -20 -20 -20 -20 -20
Maximum °C +100 +100 +100 +100 +100
Oil volume in motor case l 23 30 30 37 45
Moment of inertia for rotary group
Motor with splines kg·m
2
14.7 25.7 26.6 37.6 48.7
Motor with shaft coupling
6)
kg·m
2
16.7 28.6 38.1 49.1 79.3
5)
Weight
Motor with splines kg 1113 1453 1520 1818 2156
Motor with shaft coupling
6)
kg 1206 1558 1675 1973 2410
5)
1) The operating pressure corresponds to the maximum allowed design pressure.
2) Peak pressure 420 bar maximum, allowed to occur at a single operating period of max. 1 second. Total amount of
single operation periods = 10 000 times.
3)
Momentary pressure spikes t< 0.1 s up to 8 bar are permitted.
4) Pressure limitations in some nominal motor sizes see Table 5
5) Motor including coupling adapter
6) Data refers to configuration with mechanical shrink disc
4.2 General data
Radial piston hydraulic motor | Hägglunds Quantum Power 11
RE 15428-B, 10-2023, Bosch Rexroth AB
Table 4: General data Quantum Power (US)
Frame size
QMP 280 QMP 400 QMP 560 QMP 840 QMP 1120
Type of mounting See section 14: Mounting alternatives
Port connections See section 3.2: Port connections
External loads See section 4.14: Permissible external loads
See section 4.5: Hydraulic fluids
Pressure Maximum operating pressure
1)
psi 5076 5076
4)
5076 5076 5076
Maximum peak pressure
2)
psi 6091 6091 6091 6091 6091
Charge pressure psi See section 4.4: Recommended charge pressure
Maximum case pressure psi 44 44 44 44 44
Maximum case peak pressure
3)
psi 116 116 116 116 116
Temperature limits of case drain oil
Seal type: NBR (Nitrile)
Minimum °F -31 -31 -31 -31 -31
Maximum °F +158 +158 +158 +158 +158
Seal type: FPM
(Viton)
Minimum °F -4 -4 -4 -4 -4
Maximum °F +212 +212 +212 +212 +212
Oil volume in motor case l 6.2 7.9 7.9 9.8 11.9
Moment of inertia for rotary group
Motor with splines lb·ft
2
348.837 609.872 631.229 892.263 1155.671
Motor with shaft coupling
6)
lb·ft
2
396.298 678.690 904.129 1165.163 1881.822
5)
Weight
Motor with splines lb 2454 3203 3351 4008 4753
Motor with shaft coupling
6)
lb 2659 3435 3693 4350 5313
5)
1) The operating pressure corresponds to the maximum allowed design pressure.
2) Peak pressure 420 bar maximum, allowed to occur at a single operating period of max. 1 second. Total amount of
single operation periods = 10 000 times.
3) Momentary pressure spikes t< 0.1 s up to 116 psi are permitted
4) Pressure limitations in some nominal motor sizes see Table 6
5) Motor including coupling adapter
6) Data refers to configuration with mechanical shrink disc
12 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.3 Motor data
Frame size Nominal size
Specic torque Displacement
Maximum
torque
1)
Maximum
speed
5)
Maximum
operating
pressure
2)
Maximum
operating
power
3)
Nm/bar cm3/rev kNm rpm
p
bar
kW
QMP 280 160 160 10100 53 170 350 931
200 200 12600 66 170 350 1154
240 240 15100 79 170 350 1371
280 280 17600 92 170 350 1582
QMP 400 240 240 15100 79 170 350 1402
280 280 17600 92 170 350 1629
320 320 20100 110 170 350 1854
360 360 22600 120 170 350 2075
400 400 25100 130 170 350 2294
440 440 27600 131 170 320
4)
2276
480 480 30200 129 155 290
4)
2032
520 520 32700 130 145 270
4)
1901
560 560 35200 129 135 250
4)
1748
QMP 560 440 440 27600 140 135 350 2017
480 480 30200 160 135 350 2191
520 520 32700 170 135 350 2365
560 560 35200 180 135 350 2535
QMP 840 600 600 37700 200 110 350 2231
640 640 40200 210 100 350 2170
680 680 42700 220 95 350 2188
720 720 45200 240 95 350 2307
760 760 47800 250 95 350 2433
800 800 50300 260 95 350 2552
840 840 52800 280 90 350 2537
QMP 1120 880 880 55300 290 80 350 2383
920 920 57800 300 80 350 2486
960 960 60300 315 80 350 2587
1000 1000 62800 330 75 350 2531
1040 1040 65300 340 72 350 2527
1080 1080 67900 355 70 350 2551
1120 1120 70400 370 68 350 2568
1)
Calculated as: Metric= Ts • (350-15) • 0,98
2)
The motors are designed according to DNV-rules. Test pressure
420 bar. Peak pressure 420 bar maximum , allowed up to 10 000
times.
3)
Flushing of motor case is required. See section 4.10: Flushing
4)
Note! Max pressure <350 bar
5)
Viton seals are recommended for speeds above 60 rpm. For
speeds above 120 rpm, please contact your Bosch Rexroth repre
-
sentative.
Table 5: Specic data Quantum Power (metric)
Radial piston hydraulic motor | Hägglunds Quantum Power 13
RE 15428-B, 10-2023, Bosch Rexroth AB
Frame size Nominal size
Specic torque Displacement
Maximum
torque
1)
Maximum
speed
5)
Maximum
operating
pressure
2)
Maximum
operating
power
3)
lbf·ft/1000 psi in3/rev lbf·ft rpm
p
psi
hp
QMP 280 160 8100 616 39000 170 5000 1248
200 10100 769 48000 170 5000 1547
240 12200 920 58000 170 5000 1838
280 14200 1070 67000 170 5000 2121
QMP 400 240 12200 920 57000 170 5000 1880
280 14200 1070 67000 170 5000 2184
320 16300 1230 76000 170 5000 2486
360 18300 1380 86000 170 5000 2783
400 20300 1530 95000 170 5000 3077
440 22400 1690 97000 170 4600
4)
3052
480 24400 1840 95000 155 4200
4)
2725
520 26400 1990 96000 145 3900
4)
2549
560 28500 2150 95000 135 3600
4)
2344
QMP 560 440 22400 1690 100000 135 5000 2705
480 24400 1840 110000 135 5000 2939
520 26400 1990 140000 135 5000 3171
560 28500 2150 130000 135 5000 3400
QMP 840 600 30500 2300 140000 110 5000 2992
640 32500 2450 150000 100 5000 2910
680 34600 2610 160000 95 5000 2934
720 36600 2760 170000 95 5000 3094
760 38700 2910 180000 95 5000 3262
800 40700 3070 190000 95 5000 3422
840 42700 3220 200000 90 5000 3402
QMP 1120 880 44700 3370 210000 80 5000 3196
920 46700 3520 220000 80 5000 3333
960 48800 3680 230000 80 5000 3469
1000 50800 3830 240000 75 5000 3394
1040 52800 3980 250000 72 5000 3389
1080 54900 4140 260000 70 5000 3421
1120 56900 4290 270000 68 5000 3444
Table 6: Specic data Quantum Power (US)
1)
Calculated as: US= Ts • (5076-215) • 0,98
2)
The motors are designed according to DNV-rules. Test pressure
6000 psi. Peak pressure 6000 psi maximum , allowed up to 10 000
times.
3)
Flushing of motor case is required. See section 4.10: Flushing
4)
Note! Max pressure <350 bar
5)
Viton seals are recommended for speeds above 60 rpm. For
speeds above 120 rpm, please contact your Bosch Rexroth repre
-
sentative
14 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.4 Recommended charge pressure
The hydraulic system must be such that the motor will
recieve sufficient charge pressure at the charge pressure
port. This applies to all types of installations.
4.4.1 The motor working in driving mode only
The pressure at the charge pressure port, should, during
operation of the motor, be at least one bar above the case
pressure independent of numbers of ports that are connec-
ted. Two cases to be considered:
Case 1: No shock loads.
Required charge pressure = case pressure + 1 bar (14.5
psi) during operation, but shall not be below 2 bar (29.0 psi)
Case 2: With shock loads.
Required charge pressure at the outlet port corre
sponds to
30% of value given in diagram. See Fig. 4. to Fig. 8
4.4.2 The motor working in braking mode
Required charge pressure at the inlet port is according
to diagram. See Fig. 4 to Fig. 8.
Fig. 4: Recommended charge pressure for motor workning in braking mode, QMP 280, 2-ports to 8-ports. Valid for oil viscosity 40 cSt.
Note!
The diagrams is valid for 1 bar (14,5 psi) case pressure.
With increasing case pressure the charge pressure must
be increased accordingly.
230920-04
Radial piston hydraulic motor | Hägglunds Quantum Power 15
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 5: Recommended charge pressure for motor workning in braking mode, QMP 400, 2 ports to 8 ports. Valid for oil viscosity 40 cSt.
Fig. 6: Recommended charge pressure for motor workning in braking mode, QMP 560, 2 ports to 8 ports. Valid for oil viscosity 40 cSt.
230920-06
230920-05
16 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 7: Recommended charge pressure for motor workning in braking mode, QMP 840, 2 ports to 8 ports. Valid for oil viscosity 40 cSt.
230920-07
230920-08
Fig. 8: Recommended charge pressure for motor workning in braking mode, QMP 1120, 2 ports to 8 ports. Valid for oil viscosity 40 cSt.
Radial piston hydraulic motor | Hägglunds Quantum Power 17
RE 15428-B, 10-2023, Bosch Rexroth AB
14
20
30
40
50
60
80
100
150
200
300
400
600
1000
2000
3000
5000
10000
20000
0
32
-40
-40
-30
-22
-20
-4
-10
14
0
32
10
50
20
68
30
86
40
104
50
122
60
140
70
158
80
176
90
194
100
212
110
230
Optimal operation
Continuous operation
Minimum viscosity for short-term operation
Maximum viscosity at cold start
Viscosity,
νν
[cSt]
Temperature,
t
[°C/°F]
Details regarding the selection of hydraulic fluid
-
ating viscosity in the temperature range, as measured in
the motor housing, is within optimum operation range,
see Fig. 9. General recommendation is to have a system
temperature of 50°C, see dotted line in Fig. 9. An ISO VG
• Optimum viscosity range is 40 to 150 cSt.
• Running above 150 cSt or below 40 cSt results in
reduced efficiency.
• Running above 400 cSt results in substantial efficien
-
cy loss.
• Starting at above 10000 cSt imparts unnecessary
strain on parts.
• Running below 30 cSt may impact service life.
• Running below 20 cSt may render instant seizure.
The operating temperature is also limited by the seal type,
see Table 3 or Table 4.
4.5 Hydraulic fluids
The hydraulic motor Hägglunds Quantum Power is prima-
rily designed for operation with hydraulic fluids according
to ISO 11158 HM.
RE 15414, Hydraulic fluid quick reference, for detailed
information on hydraulic fluids and specific additional
demands.
Table 7: Applicable uids
some are recommended, and there are also additional
demands (see data sheet RE 15414).
Filtration of the hydraulic fluid
A contamination level better than 18/16/13 according to
ISO 4406 is required.
The less contamined the fluid, the longer the service life
of the hydraulic motor.
Fig. 9: Selection diagram for viscosity ranges with straight uids, i.e. viscosity index 100
DD00069413
ISO 11158 ISO 15380 ISO 12922
Mineral oil based
and mineral oil
related hydraulic
Environmentally
acceptable hydraulic
Fire resistant
18 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.6 Overall efficiency
The diagrams are valid for oil viscosity 40 cSt and charge
pressure 15 bar (218 psi) at the motor main ports A or C.
Each diagram has the following label definitions:
1. Constant output power [kW]
2. Constant high pressure [bar]
3. Constant overall efficiency [%]
4. Constant flow [lpm]
Fig. 10: QMP 280-160
Fig. 11: QMP 280-200
1. 2.
3.
4.
230924-01
230924-02
Radial piston hydraulic motor | Hägglunds Quantum Power 19
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 12: QMP 280-240
Fig. 13: QMP 400-240
Fig. 14: QMP 280-280
230924-03
230924-04
230924-05
20 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 15: QMP 400-280
Fig. 16: QMP 400-320
Fig. 17: QMP 400-360
230924-06
230924-07
230924-08
Radial piston hydraulic motor | Hägglunds Quantum Power 21
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 18: QMP 400-400
Fig. 19: QMP 400-440 / 560-440
Fig. 20: QMP 400-480 / 560-480
230924-09
230924-10
230924-11
22 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 21: QMP 400-520 /560-520
Fig. 22: QMP 400-560 / 560-560
Fig. 23: QMP 840-600
230924-12
230924-13
230924-14
Radial piston hydraulic motor | Hägglunds Quantum Power 23
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 24: QMP 840-640
Fig. 25: QMP 840-680
Fig. 26: QMP 840-720
230924-15
230924-16
230924-17
24 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 27: QMP 840-760
Fig. 28: QMP 840-800
Fig. 29: QMP 840-840
230924-18
230924-19
230924-20
Radial piston hydraulic motor | Hägglunds Quantum Power 25
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 30: QMP 1120-880
Fig. 31: QMP 1120-920
Fig. 32: QMP 1120-960
230924-21
230924-22
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26 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 33: QMP 1120-1000
Fig. 34: QMP 1120-1040
Fig. 35: QMP 1120-1080
230924-24
230924-25
230924-26
Radial piston hydraulic motor | Hägglunds Quantum Power 27
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 36: QMP 1120-1120
230924-27
28 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.7 Pressure loss diagrams
Pressure loss, oil viscosity 40 cSt
Fig. 37: QMP 280 pressure loss 4-ports
Fig. 38: QMP 280 pressure loss 8-ports
∆p =
T
+ ∆p
l
η
m
Actual pressure difference =
output torque
+ pressure loss
230925-01
230925-02
Radial piston hydraulic motor | Hägglunds Quantum Power 29
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 39: QMP 400 pressure loss 4-ports
Fig. 40: QMP 400 pressure loss 8-ports
230925-03
230925-04
30 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 41: QMP 560 pressure loss 4-ports
Fig. 42: QMP 560 pressure loss 8-ports
230925-05
230925-06
Radial piston hydraulic motor | Hägglunds Quantum Power 31
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 43: QMP 840 pressure loss 4-ports
Fig. 44: QMP 840 pressure loss 8-ports
230925-07
230925-08
32 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 45: QMP 1120 pressure loss 4-ports
Fig. 46: QMP 1120 pressure loss 8-ports
230925-09
230925-10
Radial piston hydraulic motor | Hägglunds Quantum Power 33
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 47: Quick selection diagram
4.8 Quick selection diagram
Rated life for Hägglunds QMP is calculated according to
DIN ISO 281 Apendix 1.
The diagram below represents the torque and speed,
Oil viscosity in motor case 40 cSt. Contamination level not
exceeding ISO 4406 18/16/13 (NAS 1638, class 7).
The diagram is based on a charge pressure of 15 bar
(218 psi).
Note!
Higher case oil viscosity increases the motor rating life
considerably. Reduced temperature in the motor case,
increase rating life for the motor.
230925-11
34 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.9 Draining, venting and flushing of the motor
4.9.1 Horizontal mounting
When the motor is installed with the shaft in the
D5 must always be used (see Fig. 48).
Drain line must be connected to the tank with a minimum
of restrictions, to ensure that the maximum case pressure
is not exceeded.
D1 to D5 at opposite side compared to the drain outlet in
see Fig. 48 and Fig. 49.
Fig. 48: Horizontal mounting
Flushing flow inlet
Drain line connection
D2
D4
D5
D1
D3
230921-03
Radial piston hydraulic motor | Hägglunds Quantum Power 35
RE 15428-B, 10-2023, Bosch Rexroth AB
4.9.2 Vertical mounting
When the motor is mounted vertically, the highest of four
drain ports D1 to D5 must be used.
Flushing (lubrication) of radial seal from charge
pressure is necessary.
A) Motor shaft pointing upwards
The drain line must be connected to the drain port D3 or D5
in the housing cover (See Fig. 49, alt.: A) Shaft side upwards).
be connected to the charge pressure. With bidirectional
drives, use the connection with lowest average pressure.
(Connecting to high pressure will increase the motor drain
A) Shaft side upwards B) Shaft side downwards
B) Motor shaft pointing downwards
The drain line must be connected to one of the drain ports
D1, D2 or D4 in the connection block. (See Fig. 49 alt.: B)
Shaft side downwards).
pressure. With bidirectional drives, use the connection
with lowest average pressure. (Connecting to high pressure
Fig. 49: Vertical mounting
Charge pressure
Charge pressure
Drain line
connection
Radial seal
Radial seal
Dust seal
G1/4", Flushing
connection F1
G1/4", Flushing
connection F2
Dust seal
Drain line
connection
230921-04
36 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.10 Flushing
Flushing of motor case
The Quantum Power motors have very -
ciency, and they are frequently used in applications with
high power. To avoid high temperature in the case, the
losses generated in the motors must be cooled away. High
temperature gives lower viscosity and this gives reduction
in basic rating life and max allowed power for the motor.
connection, see Fig. 48 and Fig. 49.
Required ushing
Fig. 50 to Fig. 54
case temperature maximum 10 °C (18 °F) warmer than the
according to diagram, Fig. 9.
Fig. 50: Required ushing ow QMP 280
Fig. 51: Required ushing ow QMP 400 up to 400-400
Fig. 52: Required ushing ow QMP 560 and QMP 400-560
Fig. 53: Required ushing ow QMP 840
Fig. 54: Required ushing ow QMP 1120
230925-12
230925-13
230925-14230919-03
230919-04
Radial piston hydraulic motor | Hägglunds Quantum Power 37
RE 15428-B, 10-2023, Bosch Rexroth AB
4.11 External leakage
External leakage is from the distributor to the motor case
and from the piston assembly to the motor case.
Valid for 40 cSt and at 1/3 of max speed.
Fig. 55: External leakage
Fig. 56: Viscosity factor K
4.12 Viscosity factor K
Variation in external leakage at different oil viscosities.
When calculating external leakage using other viscosities
than 40 cSt, multiply the value given in the external leakage
diagram by the factor K.
Qleak (v) = Qleak (40) * K(v)
230925-15
230925-41
38 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.13 Freewheeling
4.13.1 The function of freewheeling
Hägglunds QMP motors can be operated in freewheeling
mode.
Principally this is performed by disengaging the pistons,
main bearings. The piston units are not engaged and thus
of standard design are suitable for this performance due
to the following facts:
1. Pistons are not actuated by any return springs.
2.
to force the pistons toward the bottom of each cylinder
bore and keep them in this position.
The basic function of the freewheeling is to have the drain
ports D1 - D5 lightly pressurized while main ports A and C
-
voir. See Fig. 58. The case pressure introduced in the
normal drain connection will then act on the outer surface
of each piston assembly pressing them towards the motor
centre.
The rotating part of the motor (cylinder block with piston
and cam roller) can now rotate on its main bearings with-
out any pumping of oil, as the piston with cam rollers have
lost any contact with the cam ring. See Fig. 57.
During freewheeling periods, the following functions must
be performed:
1. Main connections A & C of the motor drained to
reservoir.
2. Fail-safe type brake released, if used.
3. An adequate pressure introduced into the drain ports
of the motor.
Fig. 57: Freewheeling
Fig. 58: Schematic principle freewheeling.
DD00077405
4.13.2 Circuit design
The following schematic explains a system (closed/open)
with freewheeling (activated mode illustrated) as a perma-
nent feature for the application.
A
C
P
A
P
C
1-3 bar
D2
D1
Flushing flow
inlet
Note!
It is not allowed for the pistons to extend back to the
camring, until the motor has reached a complete stand-
still
Freewheeling valve function, see section 15.4.2 page 67.
230922-01
Radial piston hydraulic motor | Hägglunds Quantum Power 39
RE 15428-B, 10-2023, Bosch Rexroth AB
To use QMP motor in freewheeling mode must following
be maintained:
• The motor must be pressurized all the time when
the motor is in freewheeling mode.
• The motor must be flushed all the time when the
motor is in frewheeling mode.
An accumulator can be added into the circuit to shorten
the time to retract all the pistons completely.
An accumulator can be added into the circuit to reduce the
pressure spikes in the motor case when the pistons are
extracted, see Fig. 58.
4.13.3 Oil volume for freewheeling
Freewheeling conditions are obtained by pressurizing the
case via the drain connections and drain the main ports to
tank. To retract all pistons completely, a certain oil volume
is required depending upon motor type. This oil volume
can be calculated from the following:
V
F
=
V
i
2 N
L
V
F
= Needed Freewheeling volume [cm
3
] or(in
3
)
V
i
= Total displacement of the motor [cm
3
] or(in
3
)
N
L
= 10 (No of lobes for one camring in the
QMP motor)
40 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
4.13.4 Power loss freewheeling
Even if the freewheeling operation takes place with lowest
losses in the main ports of the motor, a powerloss must
take place in the motor case due to viscous friction
contact your Bosch Rexroth representative.
Required case pressure 1-3 bar (15-44 psi).
Case oil temperatur to be below 50 °C (122 °F).
Note!
Continuous freewheeling is allowed up to 53 rpm.
Note!
Freewheeling will require exchange of oil in the housing
to prevent overheating.
In order to accomplish proper freewheeling, a case
pressure has to be maintained, please contact your
Bosch Rexroth representative.
On the other hand, a higher casing pressure than 2 bar
(29 psi) should be avoided in order to achieve good life
of the main radial shaft seal.
Radial piston hydraulic motor | Hägglunds Quantum Power 41
RE 15428-B, 10-2023, Bosch Rexroth AB
4.14 Permissible external loads
4.14.1 External load with torque arm mounting
Shaft mounted motor with torque arm.
If non standard torque arms TC A are used, forces must be
checked for main bearings and coupling.
F
r
=
T F
r
l T = Output torque for motor
l = Lever length
a = The axial distance for action point of radial
force
Fig. 59: Shaft mounted motor with torque arm.
230925-16
42 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Axial loads: Permissible axial load for intermittent duty
F
a
= 30 000 N (6 750 lbf).
Remark: For continuous axial load applications, please
contact your Bosch Rexroth representative.
Bending: Permissible bending moment M
b
for motor with
shrink disk coupling is 30 000 Nm (22 110 lbf·ft).
4.14.2 Permissible external dynamic loads
Permissible external dynamic loads QMP 280
Torque arm mounted motor.
Viscosity 40 cSt/187 SSU, speed 50 rpm.
Fig. 60: Permissable external dynamic loads Hägglunds QMP 280
Note!
Rexroths representative.
230925-17
Radial piston hydraulic motor | Hägglunds Quantum Power 43
RE 15428-B, 10-2023, Bosch Rexroth AB
Permissible external dynamic loads QMP 400
Torque arm mounted motor. (Figure and diagram are not scaled to each other).
Viscosity 40 cSt/187 SSU, speed 50 rpm.
Axial loads: Permissible axial load for intermittent duty
F
a
= 30 000 N (6 750 lbf).
Remark: For continuous axial load applications, please
contact your Bosch Rexroth representative.
Bending: Permissible bending moment M
b
for motor with
shrink disk coupling is 30 000 Nm (22 110 lbf·ft).
Fig. 61: Permissable external dynamic loads Hägglunds QMP 400
Note!
Rexroths representative.
230925-18
44 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Permissible external dynamic loads QMP 560
Torque arm mounted motor.
Viscosity 40 cSt/187 SSU, speed 40 rpm.
Axial loads: Permissible axial load for intermittent duty
F
a
= 30 000 N (6 750 lbf).
Remark: For continuous axial load applications, please
contact your Bosch Rexroth representative.
Bending: Permissible bending moment M
b
for motor with
shrink disk coupling is 55 000 Nm (40 560 lbf·ft).
Fig. 62: Permissable external dynamic loads Hägglunds QMP 560
Note!
Rexroths representative.
230925-19
Radial piston hydraulic motor | Hägglunds Quantum Power 45
RE 15428-B, 10-2023, Bosch Rexroth AB
Permissible external dynamic loads QMP 840
Torque arm mounted motor.
Viscosity 40 cSt/187 SSU, speed 30 rpm.
Axial loads: Permissible axial load for intermittent duty
F
a
= 30 000 N (6 750 lbf).
Remark: For continuous axial load applications, please
contact your Bosch Rexroth representative.
Bending: Permissible bending moment M
b
for motor with
shrink disk coupling is 55 000 Nm (40 560 lbf·ft).
Fig. 63: Permissable external dynamic loads Hägglunds QMP 840
Note!
Rexroths representative.
230925-20
46 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Permissible external dynamic loads QMP 1120
Torque arm mounted motor.
Viscosity 40 cSt/187 SSU, speed 20 rpm.
Axial loads: Permissible axial load for intermittent duty
F
a
= 30 000 N (6 750 lbf).
Remark: For continuous axial load applications, please
contact your Bosch Rexroth representative.
Bending: Permissible bending moment M
b
for motor with
shrink disk coupling is 130 000 Nm (95 880 lbf·ft).
Fig. 64: Permissable external dynamic loads Hägglunds QMP 1120
Note!
Rexroths representative.
230925-21
Radial piston hydraulic motor | Hägglunds Quantum Power 47
RE 15428-B, 10-2023, Bosch Rexroth AB
5 Increased robustness
Option 0:
Not available for QMP
Option C:
QMP has DLC-coated piston assemblies as standard.
L1
Splines Shrink disk
Motor mm in mm in
QMP 280 600 23.62 710 27.95
QMP 400 718 28.27 836 32.91
QMP 560 768 30.24 862 33.94
QMP 840 886 34.88 980 38.58
QMP 1120 1104 43.46 1098 43.23
Table 8: Dimensions Hägglunds QMP with through hole kit
Option 0:
Motor delivered without through hole.
Option H:
the driven machine or the possibility to draw electric
cables through the motor. The through hole kit is prepared
for rotation speed sensor.
Dimension drawing
See chapter17: Related documents
Ordering code
See ordering code for QMP section 1: Ordering code.
Fig. 65: Example: QMP 400 with through hole kit.
Ø 170 mm
[6.693 in]
V-ring
O-ring
Oil filling for lubrication of
spline G 1/4" (2x)
L1 with through hole (shrink disk)
L1 with through hole (splines)
6 Through hole kit
230925-22
48 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
7 Type of seal
Option N:
NBR (Nitrile)
Preferred alternative at low ambient tempe-
ratures, speed up to 60 rpm and moderate case oil tempe-
ratures. See section 4.2: General data
Option V:
FPM (Viton)
Preferred alternative at higher case oil tempe-
ratures, speed or freewheeling above 60 rpm or operating
with fire resistant fluids. See section 4.2: General data,
4.13.4: Power loss freewheeling and 4.5: Hydraulic fluids
0
0,5
1
1,5
2
2,5
3
3,5
020406080100 120 140 160 180 200
Casepressure [bar]
Speed [rpm]
Viton@50
°C
in motorcase
Viton@65
°C
in motorcase
0
5
10
15
20
25
30
35
40
45
50
[psi]
Fig. 66: QMP with Viton seals
dd00112106
Radial piston hydraulic motor | Hägglunds Quantum Power 49
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 67: Example inductive speed sensor SPDE with trough hole unit
For technical data, see document nr: RE 15351
The sensor is mainly intended for speed indication.
Direction of rotation cannot be indicated.
Mounting is done by replacing a plug on the motor with
the sensor and tighten to 35 Nm.
Features
Non-contact, wear free system
Robust design
ATEX/IECEx -version available
Through hole version available
40 pulses per revolution
Description
Two types of sensors are available.
• The standard type has a PNP output for direct driving
of load or digital input.
• The ATEX/IECEx type (explosion proof) needs an
isolation amplifier outside explosive area.
Inductive speed sensor SPDE
8 Speed sensor
8.1 Inductive speed sensor SPDE
230925-23
50 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Speed sensing unit, Hägglunds SPDC, is a digital incre-
mental encoder using magnetic sensing technology.
The sensor generates two square wave signals with 90°
phase shift for detection of speed and direction of rota-
tion.
Features
Possibility with through hole
Slim design fully integrated in motors.
Non-contact, wear free sensing system
Possibility to read directions of rotation from sensor
1856 pulses per revolution for good speed control
possibility
Protection class IP67
For technical data, see document nr: RE 15350
Fig. 68: No through hole
Fig. 69: With through hole
Description
Sensor
Sensor
8.2 Speed sensor SPDC
230925-24
230925-25
Radial piston hydraulic motor | Hägglunds Quantum Power 51
RE 15428-B, 10-2023, Bosch Rexroth AB
8.3 Explosion proof speed sensor SPDB 2
Fig. 70: SPDB 2
Features
ATEX/IECEx approved
1000 and 3600 pulses per revolution for good speed
control possibility.
Possibility to read directions of rotation from sensor
Sensor is equipped with zero pulse
Protection class IP65
connection
For technical data, see document nr: RE 15352
Description
Digital incremental hollow shaft sensor with torque arm
mounting.
Recommendations:
1000 pulses for speed 6 rpm and above.
3600 pulses for speed below 6 rpm.
230925-26
52 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
8.4 Absolute Rotary Encoder, ABRA
Fig. 71: Absolute Rotary Encoder, ABRA
Features
Robust with inductive sensing principle
8192 steps per revolution for good positioning
capabilities
Singleturn or multiturn
Many communication interfaces available to facilitate
system integration
Encoder protection class IP67 / IP66
For technical data, see document nr: RE 15367
Description
The advantage of absolute rotary encoders is that they,
unlike incremental encoders, directly outputs the exact
position of the shaft as soon as they are switched on.
Every point of rotation has a unique position value and it
can keep the position information even if power
temporarily is lost, which means that there is no need to
turn the shaft to a reference point to determine the
position.
Note! Must be ordered separately!
230925-27
Radial piston hydraulic motor | Hägglunds Quantum Power 53
RE 15428-B, 10-2023, Bosch Rexroth AB
9 Temperature sensor
Function
The temperature sensor is mounted as standard in port
T3 for QMP, see Fig. 73
in the motor case. The sensor element is a Pt100 resistance
temperature in the motor case.
Fig. 72: Temperature sensor
Fig. 73: Temperature sensor
Table 9: Technical data, Pt 100/4-20 mA sensor
DD00070291
Sensor length l 60 mm (2.36“)
Process connection G 1/4“ 100
Degree of protection IP65
Ambient temperature - 40...+85 ºC (-40...185 ºF)
Type of sensor element Pt 100
Output 4-20 mA / 0..100 ºC (32...212 ºF)
Connector DIN 43650 screw terminals
Cable connection Pg9 cable Ø6-8 mm
Electrical connection 2-wire connection
Connection
Pin 1 - Ub
Pin 2 – 4-20 mA output
Supply voltage Ub 7.5 - 30 VDC
Reverse polarity protection Yes
Max, load
l
230925-28
54 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
10 Explosive environment
The motor can be adapted to work in hazardous areas.
particular components are needed.
Note!
Table 10: Explosion protection information ATEX
Area of application according to ATEX
directive 2014/34/EU
IM2, II2G, II2D, II3G, II3D
Protection of the motor by liquid
immersion and constructional safety
according to
EX h (EN ISO 80079-
37.2016)
Maximum surface temperature
Temperature class T4
Conforms to “Equipment and compo
-
nents intended for use in potentially
explosive atmospheres and in under
-
ground mines”
EN ISO/IEC 80079-
38.2016
II 2G Ex h IIC T4 Gb
II 2D Ex h IIIC T135°C Db
I M2 Ex h I Mb
Ambient temperature range
11 Painting system
Corrosion protection
The painting system of Hägglunds motors and accessories
are avalible in three different corrosivity categories regar-
ding corrosion protection in accordance with SS-EN ISO
12944:
• C3 - Corrosivity category Medium - which is recom-
mended for normal urban and industrial atmosphere
• C5 - Corrosivity category Very High - which is recom-
mended for coastal environment with high salinity or
aggressive industrial atmosphere
• CX - Corrosivity category Extreme - which is recom-
mended for extreme industrial areas, offshore environ-
ment with high salinity or extreme humidity
12 Painting colour
Colour
Standard colour for Hägglunds motors and accessories
is orange (RAL 2002)
Radial piston hydraulic motor | Hägglunds Quantum Power 55
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 74: QMP 280
For dimensional drawings QMP 280, see chapter 17: Related documents
Dimensions
Splines Shrink disk
mm in mm in
D1 Pitch diameter 742 29.21 742 29.21
D2 Outer diameter 782 30.79 782 30.79
D4 Guide diameter 680 26.77 680 26.77
D5 Spline size DIN 5480 N200 x 5 x 30 x 38 x 9H - -
D6 Shrink disk diameter - - 405 15.94
L1 Total length
Without through hole 620 24.41 728 28.66
L2 Length to hollow shaft 130 16.38 227 8.94
L3 Length to spline end 6 0.24 - -
L4 Length to spline 76 2.99 - -
L5 Protruding length of screws 36 1.42 36 1.42
Table 11: Dimensions QMP 280
13 Dimensions / Interface
13.1 Dimensions
Spline Shrink disk
230925-29
56 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 75: QMP 400
Dimensions
Splines Shrink disk
mm in mm in
D1 Pitch diameter 742 29.21 742 29.21
D2 Outer diameter 782 30.79 782 30.79
D4 Diameter of guide edge 680 26.77 680 26.77
D5 Spline size DIN 5480 N200 x 5 x 30 x 38 x 9H - -
D6 Shrink disk diameter - - 440 17.32
L1 Total length
Without through hole 737 29.02 855 33.66
L2 Length to hollow shaft 129 5.08 237 9.33
L3 Length to spline end 20 0.79 - -
L4 Length to spline 75 2.95 - -
L5 Produting length of screws 31 1.22 31 1.22
Table 12: Dimensions QMP 400
For dimensional drawings QMP 400, see chapter 17: Related documents
Spline
Shrink disk
230925-30
Radial piston hydraulic motor | Hägglunds Quantum Power 57
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 76: QMP 560
Table 13: Dimensions QMP 560
Dimensions
Splines Shrink disk
mm in mm in
D1 Pitch diameter 870 34.25 870 34.25
D2 Outer diameter 940 37.01 940 37.01
D3 Screw hole 26 1.02 26 1.02
D4 Guide diameter 800 31.50 800 31.50
D5 Spline size DIN 5480 N260 x 5 x 30 x 50 x 9H - -
D6 Shrink disk diameter - - 520 20.47
L1 Total length
Without through hole 788 31.02 881 34.69
L2 Length to hollow shaft 298 11.73 381 15.00
L3 Length to spline end 124 4.88 - -
L4 Length to spline 244 9.61 - -
L6 Thickness of mounting ring 35 1.38 35 1.38
For dimensional drawings QMP 560, see chapter 17: Related documents
Spline
Shrink disk
230925-31
58 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Fig. 77: QMP 840
Dimensions
Splines Shrink disk
mm in mm in
D1 Pitch diameter 870 34.25 870 34.25
D2 Outer diameter 940 37.01 940 37.01
D3 Screw hole 26 1.02 26 1.02
D4 Guide diameter 800 31.50 800 31.50
D5 Spline size DIN 5480 N260 x 5 x 30 x 50 x 9H - -
D6 Shrink disk diameter - - 520 20.47
L1 Total length
Without through hole 905 35.63 999 39.33
L2 Length to hollow shaft 298 11.73 381 15.00
L3 Length to spline end 124 4.88 - -
L4 Length to spline 244 9.61 - -
L6 Thickness of mounting ring 35 1.38 35 1.38
Table 14: Dimensions QMP 840
For dimensional drawings QMP 840, see chapter 17: Related documents
Spline
Shrink disk
230925-32
Radial piston hydraulic motor | Hägglunds Quantum Power 59
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 78: QMP 1120
Table 15: Dimensions QMP 1120
Dimensions
Splines
mm in
D1 Pitch diameter 870 34.25
D2 Outer diameter 940 37.01
D3 Screw hole 26 1.02
D4 Guide diameter 800 31.50
D5 Spline size DIN 5480 N260 x 5 x 30 x 50 x 9H
L1 Total length
Without through hole 1023 40.28
L2 Length to hollow shaft 298 11.73
L3 Length to spline end 124 4.88
L4 Length to spline 244 9.61
L6 Thickness of mounting ring 35 1.38
For dimensional drawings QMP 1120, see chapter 17: Related documents
Spline
230925-33
60 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
14 Mounting alternatives
14.1 General information
With splines for ange or torque arm mounting.
connected gearbox. To avoid wear in the splines, the
Fig.
79
For requirements of spline shaft, see chapter 17: Related
documents
14.1.1 Flange mounting with splines
Fig. 79: Flange mounting for QMP 280 to QMP 1120.
Features
Possibility to use the motor as a one
side shaft support bearing.
Oil lubrication of splines give no wear.
Easy mounting of motor to driven shaft.
For installation drawings
spline shaft flange mounting,
see chapter 17: Related docu-
ments
O-ring delivered
with the motor.
Hydraulic oil must be filled
for spline lubrication to
eliminate wear.
Note!
Table 16: Mounting ange dimensions
øi
QMP 280/400 680
+0,20
+0,05
QMP 560/840/1120 800
+0,20
+0,05
Note!
Flange mounting gives high risk for overloading of
motor main bearings. Always check that the shaft and
motor bearings are statically determined.
230925-34
Radial piston hydraulic motor | Hägglunds Quantum Power 61
RE 15428-B, 10-2023, Bosch Rexroth AB
Table 17: Recommended material in the spline shaft
Drive Steel with yield strenght
Unidirectional drive
Rel
min
= 450 N/mm
2
(65 000 lb/ft
2
)
Bidirectional drive
Rel
min
= 700 N/mm
2
(101800 lb/ft
2
)
Table 18: Spline designation shaft
Spline
Frame size QMP 280 QMP 400 QMP 560 QMP 840 QMP 1120
Designation: Standard DIN 5480 W200x5x30x38x9H W260x5x30x50x9H
Fig. 80: Flange mounted motor with splines and low radial load
from driven shaft.
Fig. 81: Flange mounted motor with splines to avoid high radial
load from driven shaft.
DD00087934 DD00087935
62 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
14.1.2 Torque arm mounting with splines
For installation and dimensional drawings,
spline shaft torque arm mounting, see
chapter 17: Related documents
Mounting kit must be oredered
seperately, see Table 19
Torque arm mounting,
see chapter 15: Accessories
O-ring delivered
with the motor.
Hydraulic oil must be
filled for spline lubrica
-
tion to
eliminate wear.
Note!
Recommended material in the shaft, see Table 17.
Spline designation shaft, see Table 18.
Fig. 82: Torque arm mounting motor with splines
Motor type Material ID Mounting kit
(Must be ordered separatly)
QMP 280 R939081373
QMP 400 R939081400
QMP 560 R939081401
QMP 840 R939081402
QMP 1120 R939081403
Table 19: Material ID mounting kit for QMP 280 to QMP 1120
Radial piston hydraulic motor | Hägglunds Quantum Power 63
RE 15428-B, 10-2023, Bosch Rexroth AB
14.1.3 Torque arm mounting on plain shaft
Design of driven shaft end on normally loaded shaft
In drives with only one direction of rotation and/or load
where the stresses in the shaft are moderate, the shaft
can be plain.
Design of driven shaft end on heavily loaded shaft.
high stresses, for example for changes in the direction of
rotation and/or load, it is recommended that the driven shaft
should have a stress relieving groove.
Fig. 83: Torque arm mounted motor with shrink disk.
Fig. 84: Shaft end, normally loaded
Stressrelieving
groove
DD00077870
DD00077869
Fig. 85: Shaft end, heavily loaded
DD00087938
Dimensions and material for shaft end, plain shaft
Table 20: Shaft recommendations
Dim QMP 280 QMP 400 QMP 560/840 QMP 1120 with coupling
adapter
A
mm ø180
-0,014
ø200
-0,015
ø260
-0,017
ø340
-0,018
-0,054 -0,061 -0,069 -0,075
in ø7,0866
-0,00055
ø18,1102
-0,00059
ø10,2362
-0,00067
ø13.3858
-0,00068
-0,00215 -0,00240 -0,00272 -0,00292
B
mm 106 117 153 215
in 4,17 4,61 6,02 8.46
C
mm 174 194 254 334
in 6,85 7,64 10,00 13.15
Note! The dimensions are valid at +20 °C (68 °F)
Drive Steel with yield strenght
Unidirectional drive
Rel
min
= 300 N/mm
2
Bidirectional drives
Rel
min
= 450 N/mm
2
Measures Dimensions, threads for assembly tool
D M20 UNC 5/8"
E >17 mm 0,67 in >13,5 mm 0,53 in
F 25 mm 0,98 in 22 mm 0,87 in
G 50 mm 1,97 in 30 mm 1,18 in
Table 21: Threads for assembly tool (plain shaft)
Table 22: Recommended material in the shaft
64 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
15 Accessories
15.1 Torque arms
Mounting alternatives
Dimensions, techical data, order code and material ID for
torque arms, see separate data sheet: RE 15355
Features
Easy mounting i.e. no alignment problems
Quick mounting of motor to driven shaf
Robust torque-transmitting
Controlled external forces on driven shaft
Space saving. i.e. close mounting to the driven machine
Features
Easy mounting i.e. no alignment problems
Controlled external forces on driven shaft
Features
Easy mounting i.e. no alignment problems
Quick mounting of motor to driven shaft
Robust Torque-transmitting
Reduction of external forces on driven shaft
Features
Easy mounting i.e. no alignment problems
Reduction of external forces on driven shaft
Fig. 86: Single ended torque arm mounting for spline shaft Fig. 87: Single ended torque arm mounting for plain shaft
+
For spline shaft on
driven machine
(spline motor)
For plain shaft on
driven machine
(coupling motor)
Plain shaft on
driven machine
+
Fig. 88: Double ended torque arm mounting for spline shaft
Fig. 89: Double ended torque arm mounting with plain shaft
Mounting kit
Mounting kit
Torque arm
Torque arm
Torque arm
For spline shaft on
driven machine
(spline motor)
Torque arm
Radial piston hydraulic motor | Hägglunds Quantum Power 65
RE 15428-B, 10-2023, Bosch Rexroth AB
15.2 Early warning kit
Fig. 90: Magnetic plug mounted on QMP
Description
The early warining kit is basically a magnetic plug installed
in the drain line as standard in QMP. By regularly inspect-
ing the magnetic plug a malfunction of the hydraulic motor
can be detected and corrected and a total breakdown can
be avoided.
For inspection and maintenance routines, see Installation
and maintenance manual: RE 15428-WA-B.
Features
Easy inspection of motor condition
Early detection of potential failures
Mounted as standard in QMP motors
230921-02
66 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
15.3 Coupling adapter for QMP 1120
The coupling adapter includes shrink disk and adapter shaft. Mounting kit must be ordered separately.
The coupling adapter is designed for a plain driven shaft.
Shrink disk
O-ring,
delivered with the motor
Adapter shaft
Mounting kit,
must be ordered separatly,
see Table 23
Hydraulic oil must be
filled
for spline lubrication to
eliminate wear.
Fig. 91: QMP 1120 motor with coupling adapter
Note!
Coupling adapter
Mounting kit
(Must be ordered
separatly)
Material ID
Unidirectional and
bidirectional drive
R939000328 R939081403
Table 23: Material ID coupling adapter and mounting kit
Coupling adapter
Fig. 92: QMP 1120 motor with coupling adapter
A B C D E
mm in mm in mm in mm in mm in
940 57.48 1 380 54.33 690 28.35 650 30.43 340 14.17
Table 24: Dimensions QMP 1120 motor with coupling adapter
For dimensional drawings QMP 1120 with coupling adapter, see chapter 17: Related documents
230925-36
230925-35
Radial piston hydraulic motor | Hägglunds Quantum Power 67
RE 15428-B, 10-2023, Bosch Rexroth AB
Fig. 93: Hydraulic circuit COCC 1000 1
15.4 Valves
15.4.1 Cross-over valve, COCC 1200
Features
Compact and robust design
Mounted directly on Hägglunds motors
Protects the motor from high pressure peaks
Provides cavitation protection
Oil exchange system for closed loop as option
ATEX version as option
The valve COCC is designed for Hägglunds motors and
provides cross-line relief at pressure shocks and cavitation
protection. The relief valves has a standard setting of
350 bar (5076 psi) but can be delivered with preset level
280 bar (4061 psi), 300 bar (4351 psi) and 330 bar
(4786 psi). Pressure setting is made without charge pres-
sure.
The charge pressure relief valve has a standard setting of
For technical data, see document nr: RE 15392
DD00115956
Fig. 94: Hydraulic circuit VFWCB 600
15.4.2 Freewheeling valve VFWCB 600
Features
Compact and robust design
Multifunctional
Mounted directly on Hägglunds motors
Detent function on pilot valve
Possible for remote control
For technical data, see document nr: RE 15380
The VFWCB 600 valve is designed for Hägglunds motors
and provides freewheeling of the motor by means of dis-
connecting the motor from the main lines and connect
both motor ports to T which has to be drained to tank.
The valve can be mounted directly onto the motor and can
be used in both open and closed loop applications.
Maximum operating pressure is 350 bar (5076 psi) and
maximum flow 1000 l(min (264 gpm). Nominal flow is 600
l/min (156 gpm).
The valve is available in three main configurations:
VFWCB 600 E Freewheeling valve electrically operated
VFWCB 600 H Freewheeling valve hydraulically operated
VFWCB 600 M Freewheeling valve manually operated
DD00076119
230925-37 230925-38
68 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
15.5 Hägglunds BICA
For technical data, see document nr: RE 15366
Description
The brakes are designed for industrial applications
together with QMP motors. The brake is made for dry
operation of the discs and is not allowed for hanging load
applications. BICA brakes are designed to be mounted on
QMP 280 - QMP 1120. The brake is designed to be used
as parking brake only.
Fig. 95: QMP motor with BICA brake
Features
Robust design, industrial HD design
Possibility for on – off sensor
Torque range between 48 – 160 kNm
QMP 560
QMP 840
QMP 1120
QMP 280
QMP 400
BICA 90
BICA 134
BICA 160
BICA 48
BICA 64
230925-39
Radial piston hydraulic motor | Hägglunds Quantum Power 69
RE 15428-B, 10-2023, Bosch Rexroth AB
Description
To protect the main seal, a kit with a v-ring can be moun-
ted on the motors.
The kit is made for motors with splines and standard
shrink disk coupling or hydraulic shrink disk.
15.6 Kit for harsh and marine environment
Features
Protects the motor main seal
Designed for harsh and marine environments
Elongate the life time of the main sealings
Fig. 96: Kit for harsh and marine environment
For technical data, see document nr: RE 15364
Surfaces to be greased
before mounting.
Fill with silicone rubber.
Surfaces to be greased
before mounting.
and checking distance 2 mm.
10 Nm after checking
distance 2 mm.
Fill with silicone rubber.
Fill with silicone rubber.
230925-40
70 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
16 Circuit design
16.1 Closed circuit
Things to consider:
1. Level of charge pressure
2. Case drain flow
3. Filter
4. Cooler
5. Case flushing
Fig. 97: Closed circuit
DD00077068
Radial piston hydraulic motor | Hägglunds Quantum Power 71
RE 15428-B, 10-2023, Bosch Rexroth AB
Things to consider:
1. Counter pressure required minimum 2 bar to ensure
recommended charge pressure
2. Cross over relief valves for reduction of pressure
spikes
3. Anticavitation valves
4. Return line filter
5. Case flushing
6. Cooler
16.2 Open circuit
Fig. 98: Open circuit
DD00077074
72 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Title Document no Document type
Hägglunds Quantum Power RE 15428-WA-B Installation & maintenance manual
QMP 280 S RA30074823 Dimension drawing
QMP 400 S RA30074817 Dimension drawing
QMP 560 S RA30074736 Dimension drawing
QMP 840 S RA30074830 Dimension drawing
QMP 1120 S RA30074834 Dimension drawing
QMP 280 C RA30074825 Dimension drawing
QMP 400 C RA30074819 Dimension drawing
QMP 560 C RA30074739 Dimension drawings
QMP 840 C RA30074832 Dimension drawings
QMP 1120 splines, with coupling adapter RA30074902 Dimension drawings
Spline shaft QMP 280 / QMP 400 for external load and torque arm RB04247061 Dimension drawings
RB05110339 Dimension drawings
Spline shaft QMP 560 to QMP 1120 for external load and torque arm RB04289586 Dimension drawings
RB05110427 Dimension drawings
Spline shaft QMP 280 for external load and torque arm mounted with brake RB05110331 Dimension drawings
RB05110335 Dimension drawings
Spline shaft QMP 560 to QMP 1120 for external load and torque arm
mounted with brake
RA96775955 Dimension drawings
RA96824861 Dimension drawings
Speed sensor, Hägglunds SPDC RE 15350 Data Sheet
Speed sensor inductiv, Hägglunds SPDE RE 15351 Data Sheet
Speed sensor explosion proof, Hägglunds SPDB 2 with mounting set RE 15352 Data Sheet
Absolute Rotary Encoder, Hägglunds ABRA with mounting set RE 15367 Data Sheet
Torque arms Hägglunds TCA, DTCA, DTCB RE 15355 Data Sheet
Kit for harsh and marine environment RE 15364 Data Sheet
Disc brake for Compact motors, Hägglunds BICA RE 15366 Data Sheet
Cross-over valve, Hägglunds COCC 1200 RE 15392 Data Sheet
Freewheeling valve, Hägglunds VFWCB 600 RE 15380 Data Sheet
RE 15414 Data sheet
Dimension drawings at Bosch Rexroth MyRexroth
17 Related documents
Radial piston hydraulic motor | Hägglunds Quantum Power 73
RE 15428-B, 10-2023, Bosch Rexroth AB
74 Hägglunds Quantum Power | Radial piston hydraulic motor
Bosch Rexroth AB, RE 15428-B, 10-2023
Radial piston hydraulic motor | Hägglunds Quantum Power 75
RE 15428-B, 10-2023, Bosch Rexroth AB
HÄGGLUNDS
Bosch Rexroth AB
SE-895 80 Mellansel
tel: +46 (0)660 870 00
www.hagglunds.com
© This document, as well as the data, specications and other information
set forth in it, are the exclusive property of Bosch Rexroth AB. It may not be
reproduced or given to third parties without its consent.
The data specied above only serve to describe the product. As our products
are constantly being further developed, no statements concerning a certain
condition or suitability for a certain application can be derived from our
information. The information given does not release the user from the
obligation of own judgment and verication. It must be remembered that our
products are subject to a natural process of wear and aging.
Hägglunds is a brand of Rexroth, a leading global supplier
of drive and control technologies. Hägglunds solutions
enrich a comprehensive Rexroth portfolio.
