RE 15328/06.2021, Bosch Rexroth AB_
Contents
Ordering code 2
Hydraulic uids 4
Shaft seal 5
Working pressure range 6
Technical data 7
Overview of control devices 11
Dimensions 12
Through drive 20
Overview of mounting options on SP 21
Dimensions through drive 22
Boost pump and valve technology 24
Filtration types
1)
26
Installation instructions 27
Project planning notes 30
Safety instructions 30
Related documents 31
Axial-piston pump
Hägglunds SP 40 to SP 180
RE 15328/06.2021
Replaces: New
Features
▶ Variable pump in axial piston swashplate design for
hydrostatic drives in closed circuit
▶ The ow is proportional to the drive speed and
displacement
▶ By controlling the swashplate angle, innitely variable
ow is possible
▶ The boost pump required for closed-circuit operation
▶ The boost pump acts as a feed pump and pilot pres-
sure supply
▶ Compact design with short installation length
▶ Favorable power/weight ratio
▶ Low noise level
▶ Long service life
▶ High efciency
▶ Electrohydraulic proportional control with neutral
position in the event of a power failure
▶ Through drive and pump combination also possible
▶ Sizes 40 to 180
▶ Nominal pressure 350 bar
▶ Maximum pressure 400 bar
▶ Closed circuit
Bosch Rexroth AB, RE 15328/06.2021
2 Hägglunds SP 40 to SP 180 | Axial piston pump
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: Single Hägglunds SP pump
SP 125 S R - V - EP 1234567
01 02 03 04 05 06 07 08
Example: Tandem combinations Hägglunds SP pump
SP 180+180 S R - V - EP 1234567
01 02 03 04 05 06 07 08
01 Axial-piston pump
Superior pump SP
02 Size. Displacement V
gmax
[cm
3
]
40 40
71 71
125 125
180 180
Available tandem combinations see Table 18
03 Drive shaft
Splined to DIN 5480 S
Key shaft DIN 6885 (only spare pumps) K
04 Direction of rotation
Clockwise R
Counter clockwise (optional) L
05 Sealing material
FKM (Flourelastomer) V
06 Control device
Electro-hydr. with prop. solenoid EP
Hydr. control, pilot press. dependent HD
07 Identy number
1234567
08 Special index
For more information please contact your Bosch Rexroth representative
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
3
Observe some important issues with the SP pump
• Control device as standard is electrohydraulic, EPG
see RE 92084. An option is hydraulic control see
RE 92080
• The different sizes of Hägglunds SP pumps has
different versions, SP 40 and SP 71 are series 11,
SP 125 and SP 180 are series 30.
• Charge flow filtration is solved separate from the
pump with the SP-pumps, the filter is not mounted
on the pump.
The SP-pump is of closed loop type, in sizes of 40 cc to
180 cc, with an external boost pump of gear type (see
Table 1 for sizes). The main pump is a variable axial piston
type with swashplate design. For detailed information
about shaft, ports, flanges, dimension see ”Dimensions”
page 12.
External boost pump is always included as a part in the
SP pump.
Table 1: Sizes of gear types
SP Pump Charge pump size cm3/rev
SP 40 20
SP 71 25
SP 125 40
SP 180 45
Fig. 1: Example of identication plate
1
2
3
4
5 6
1. Type designation
2. Material number
3. Seriel number
4. Manufacturing date
5. Net weight
6. Rotation direction viewed from shaft end
Identication plate
SP 125 / SP 180
Identication plate
SP 40 / SP 71
Fig. 2: Placement of identication plate
Notice
▶ The identication plate only refer to the material
number of the main pump.
▶ The material number in the order specic
documentation for Hägglunds drive units refers to the
complete pump.
▶ When ordering a complete spare pump, use the
material number in the order specic documentation.
Identification plate
Bosch Rexroth AB, RE 15328/06.2021
4 Hägglunds SP 40 to SP 180 | Axial piston pump
Hydraulic uids
Hägglunds SP pumps is primarily designed for operation
with hydraulic uids according to ISO 11158 HM.
Before the start of project planning, see data sheet
RE 15414, Hydraulic uid quick reference, for detailed
information on hydraulic uids and specic additional
demands.
Table 2: Applicable uids
Fig. 3: Selection diagram for viscosity ranges with straight uids, i.e. viscosity index 100
DD00069413
ISO 11158 (see 90220) ISO 15380 (see 90221)
Mineral oil based and mineral oil
related hydraulic uids
Environmentally
acceptable hydraulic
uids
Within these standards, not all fluid classes are allowed,
some are recommended, and there are also additional
demands (see data sheet RE 15414).
Details regarding the selection of hydraulic fluid
The hydraulic uid should be selected such that the oper-
ating viscosity in the temperature range, as measured in
the motor housing, is within optimum operation range, see
Fig. 3. General recommendation is to have a system tem-
perature of 50°C, see dotted line in Fig. 3. An ISO VG 68
uid will render just above 40 cSt at this point.
Hägglunds recommend to follow these points below.
• Recommended viscosity range for Hägglunds drive
systems 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 1000 cSt impact unnecessary
strain on parts.
• Running below 30 cSt may impact service life.
• At no point on the component may the temperature
be higher than 90 °C.
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
Recommended
operation
Maximum viscosity at cold start
Viscosity,
ν
[cSt]
Temperature,
t
Minimum viscosity for short-term operation
°C
°F
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
5
Filtration of the hydraulic uid
Finer ltration improves the cleanliness level of the
hydraulic uid, which increases the service life of the axial
piston unit.
A cleanliness level of at least 18/16/13 is to be main-
tained according to ISO 4406.
Depending on system and application, filter cartridges
with at least B20 >100 is recommended.
Bearing ushing
For the following operating conditions bearing flushing is
required for reliable continuous operation:
• Applications with special fluids (non mineral oils),
due to limited lubricity and narrow operating
temperature range
• Operation with critical conditions of temperature
and viscosity with mineral oil
• High installed power, see Table 4
Flushing is carried out via U-port, which is located in the
front flange area of the pump. The flushing oil flows
through the front bearing and leaves the system together
with the leakage oil at the case drain port.
Recommended flushing flows for the various pump sizes:
See Table 3
These flushing flows create a pressure drop of
approximately 3 bar between U-port and pump housing
(including fitting).
Note. When using bearing flushing at U-port the throttle
screw, which can be found at U-port, has to be turned in
all the way to the stop.
Table 3: Recommended ushing ows
Size Flushing ow, q
l/min
40 3
71 4
125 5
180 7
Table 4: Installed electric motor power when ushing is needed
Size Installed electric
motor power, kW
Installed electric
motor power, hp
40 50 67
71 69 93
125 108 145
180 132 177
Shaft seal
Permissible pressure load
The service life of the shaft seal ring is affected by the
rotational speed of the axial piston unit and the leakage
pressure (case pressure).
The service life of the shaft
seal decreases with an increase in the frequency of
pressure peaks
and an increase in the mean differential
pressure.
The pressure in the case must be equal to or greater than
the ambient pressure.
Case drain pressure
Table 5: Maximum case pressure (housing pressure)
р
L continious
5 bar
р
L abs max
8 bar
T
1
T
2
and T
3
must be unloaded to tank.
Bosch Rexroth AB, RE 15328/06.2021
6 Hägglunds SP 40 to SP 180 | Axial piston pump
Working pressure range
Pressure at working ports A or B Denition
Nominal pressure p
nom
(see Fig. 5) 350 bar The nominal pressure corresponds to the maximum design pressure.
Maximum pressure p
max
(see Fig. 5) 400 bar
The maximum pressure corresponds to the maximum working pressure
within the single operating period. The sum of the single operating pe
-
riods must not exceed the total operating period.
Single operating period 1s
Total operating period 300 h
Minimum pressure (high-pressure side)
(see Fig. 5)
15 bar Minimum pressure at the high-pressure side (A or B) which is required
to prevent damage to the axial piston unit.
Minimum pressure (low-pressure side) Speed related
(see Fig. 4)
Minimum pressure at the low-pressure side (A or B) which is required
in order to prevent damage to the axial piston unit. The low pressure is
present at port M
K4
with the ushing slide deected.
Rate of pressure change R
Amax
16000bar/s Maximum permissible speed of pressure build-up and reduction during
a pressure change across the entire pressure range.
Boost pressure
Minimum boost pressure p
Sp
(at n
nom
) 16 bar
Measuring port M
K4
(Please contact Bosch Rexroth representative for coupled multiple
pumps)
Maximum static boost pressure p
Sp max
25 bar
Permissible pressure peaks in
boost pressure
minimum 4 bar
maximum 40 bar
Pressure at suction port S (version with integrated boost pump)
Minimum pressure p
S min
≥ 0.8 bar absolute Minimum pressure at suction port S (inlet) that is required in order to
avoid damage to the axial piston unit.
Maximum pressure p
S max
30 bar absolute
Control pressure for EP and HD control.
Minimum required control pressure p
St min
30 bar + (Pn-Ps) Measuring port ME
3
for Pn= pump in neutral,Ps= pump on stroke
ME measuring port for control pressure (should be about 37 bar
depending on viscosity and pump size)
Fig. 4: Required low pressure depending on the speed ratio
Fig. 5: Working pressure
Table 6: Allowed pressure and pressure settings
20
18
16
14
12
10
8
6
0.5 0.6 0.7 0.8 0.9 1.0
Low pressure p [bar]
Speed ratio n/n
nom
Pressure p
t
1
t
2
t
n
Single operating period
Minimum pressure (high-pressure side)
Maximum pressure p
max
Nominal pressure p
nom
Time t
Total operating period = t
1
+ t
2
+ ... + t
n
Notice
Working pressure range valid when using hydraulic uids
based on mineral oils. Values for other hydraulic uids,
please contact your Bosch Rexroth representative
Size 40 to 180
Minimum recommended
setting (manometer
indicator)
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
7
Technical data
Size NG 40 71 125 180
Displacement, geometric,
per revolution
Variable pump V
g max
cm
3
40 71 125 180
Boost pump V
g Sp
cm
3
20 25 40 45
Rotational speed
1)
maximum at V
g max
n
nom
rpm
3000 3000 2600 2400
minimal n
min
rpm 500 500 500 500
Flow (variable pump)
at V
g max
and
n
max
q
v
L/min
148 227 325 432
n
E
= 1500 rpm q
VE
L/min
60 107 186 270
Power
2)
at V
g max
, ∆p = 350 bar and
n
max
P kW
86 132 190 252
n
E
= 1500 rpm P
E
kW
35 62 109 158
Torque
2)
at V
g max
and ∆p = 350 bar T Nm
223 395 696 1002
∆p = 100 bar T Nm
64 113 199 286
Rotary stiffness of drive shaft P c kNm/rad
80 146 260 328
Z c kNm/rad
77 146 263 332
Moment of inertia for rotary group J
TW
kgm
2
0.0049 0.0121 0.03 0,055
Maximum angular acceleration
3)
α rad/s
2
17000 11000 8000 6800
Case volume V L
2 2.5 5 4
Weight
(pump with EP control and boost pump without lter)
approx. m kg 74 97 150 158
Determining the characteristics
Flow q
v
=
V
g
• n • η
v
[l/min]
1000
Torque T =
V
g
• Δp
[Nm]
20 • π • η
mh
Power P =
2 π • T • n
=
q
v
• Δp
[kW]
60000 600 • η
t
Key
V
g
=
Displacement per revolution [cm
3
]
Δp = Differential pressure [bar]
n = Rotational speed [rpm]
η
v
= Volumetric efciency
η
mh
= Mechanical-hydraulic efciency
η
t
= Total efciency (η
t
= η
v
• η
mh
)
Notice
▶ Theoretical values, without efciency and tolerances;
values rounded
▶ Operation above the maximum values or below the
minimum values may result in a loss of function, a
reduced service life or in the destruction of the axial
piston unit. Bosch Rexroth recommends testing the
loads by means of experiment or calculation /
simulation and comparison with the permissible
values.
Direction of rotation of pump shaft Swiveling range*
clockwise counter-clockwise
B to A A to B clockwise
A to B B to A counter-clockwise
* cf. swivel angle indicator see Fig. 6
Table 7: Technical data
Table 8: Equations for characteristics
Table 9: Flow direction
15° 0° 15°
clockwise
Fig. 6: Swiveling indicator
counter
clockwise
1) The values are applicable:
‒ for the optimum viscosity see “Hydraulic uids” page 4
‒
for hydraulic uid based on mineral oils
2) Without boost pump
3) The data are valid for values between the minimum required and
maximum permissible rotational speed.
Valid for external excitation (e.g. diesel engine 2 to 8 times rotary
frequency, cardan shaft twice the rotary frequency).
The limit value is only valid for a single pump.
The load capacity of the connecting parts must be considered.
Bosch Rexroth AB, RE 15328/06.2021
8 Hägglunds SP 40 to SP 180 | Axial piston pump
Total efciency
Fig. 7: SP 40 1500 rpm Fig. 8: SP 40 1800 rpm
Fig. 9: SP 71 1500 rpm Fig. 10: SP 71 1800 rpm
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
9
Fig. 11: SP 125 1500 rpm
Fig. 12: SP 180 1500 rpm
Fig. 13: SP 125 1800 rpm
Fig. 14: SP 180 1800 rpm
Bosch Rexroth AB, RE 15328/06.2021
10 Hägglunds SP 40 to SP 180 | Axial piston pump
Size NG 40 71 125 180
Drive shaft
Maximum radial force at X/2
F
q
a
a/2
a/2
F
q max
N 1000 1200 1600 2000
Maximum axial force
F
ax
+
–
+ F
ax max
N
600 800 1000 1400
− F
ax max
N
Note
Special requirements apply in the case of belt drives.
Please contact your Bosch Rexroth representative.
Size NG 40 71 125 180
Torque at V
g max
and Δp = 350 bar
1)
T
max
Nm 223 395 696 1002
Maximum input torque at drive shaft
2)
Splined shaft S
T
E max
Nm 446 790 1392 2004
Shaft key K
T
E max
Nm
380 700 1392 1400
Maximum through-drive torque T
D max
= T
E max
Table 10: Permissible radial and axial forces of the drive shafts
Table 11: Permissible input and through-drive torques
T
E
T
D
T
1
T
2
T
3
1st pump
2nd pump
Torque at 1st pump T
1
Torque at 2nd pump T
2
Torque at 3rd pump T
3
Input torque T
E
= T
1
+ T
2
+ T
3
T
E
< T
E max
Through-drive torque T
D
= T
2
+ T
3
T
D
< T
D max
Fig. 15: Distribution of torqes
Note
Avoid to use shaft key, the standard SP pump has a
splined shaft.
1) Efciency not considered
2) For drive shafts free of radial force
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
11
Fig. 16: Characteristic curve SP 125/180 EP
Overview of control devices
EP – proportional control, electrohydraulic
(see data sheet RE 92084)
The EP control adjusts the pump displacement
proportionally to the current at the solenoid. Current-
regulated control units with pulse-width modulation are
recommended for controlling the solenoids.
With existing boost pump, the control is supplied internally
with the control pressure from the boost circuit. This saves
using a separate control pressure pump.
▶ Remote pressure control EP(G)
I
V
g
V
g max
V
g
V
g max
I
Fig. 17: Circuit diagram, example SP 125/180 EP
HD – Proportional control, hydraulic,
pilot-pressure related (see data sheet RE 92080)
Stepless adjustment of the pump displacement according to
the pilot pressure. The control is proportional to the speci
-
ed pilot pressure setpoint value (difference between X
1,
X
2
).
With existing boost pump, the control is supplied internally
with the control pressure from the boost circuit. This saves
using a separate control pressure pump.
Optional:
▶ Control characteristics (HD1)
p
St
V
g
V
g max
V
g
V
g max
p
St
Fig. 18: Characteristic curve SP 125/180 HD1
Fig. 19: Circuit diagram, example SP 125/180 HD
Bosch Rexroth AB, RE 15328/06.2021
12 Hägglunds SP 40 to SP 180 | Axial piston pump
Dimensions
Hägglunds SP 40
Fig. 20: Dimension SP 40
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
13
Ports Size
1)
p
maxabs
[bar]
3)
State
A, B Pressure port SAE 3/4" code 62 400 O
S1 Suction port SAE 3/4" code 61
2)
30 O
ME3 Measuring port charge pressure 9/16-18UNF-2B 40 X
ME Measuring port control pressure 9/16-18UNF-2B 40 X
E1 To pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
E2 From pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
K1, K2, K3 Flushing port 7/8-14UNF-2B 5 O
6)
K4 Accumulator port 1 5/16-12UNF-2B 40 X
MK4 Measuring port charge pressure 9/16-18UNF-2B 40 X
MA1, MB1 Measuring port operating pressure 7/16-20UNF-2B 400 X
MA2, MB2 Measuring port operating pressure M14x1.5 400 X
M1 Measuring port control/high pressure S8 DIN3852 From W 400 X
R(L) Return resp, aeration 7/8-14UNF-2B 4 O
4)
T Oil discharge 7/8-14UNF-2B
3)
4 X
4)
T1, T3 Drain port pressure relief valve 9/16-18UNF-2B 4 O
T2 Drain port shaft seal 9/16-18UNF-2B 4 O
U Flushing port (bearing ushing) 9/16-18UNF-2B
3)
7 X
XA2, XB2, XAB Pilot pressure port, pressure control 9/16-18UNF-2B 350 X
XA1, XB1 Pilot pressure port, relief valve A & B 9/16-18UNF-2B 350 X
Table 12: Connections SP 40
Fig. 21: Hydraulic circuit for SP 40
1) Depending on the application, momentary pressure peaks can oc-
cur. Keep this in mind when selecting measuring devices and t-
tings.
2) Only dimensions according to SAE J518, metric fastening thread
is a deviation from standard.
3) The countersink can be deeper than that specied in the standard.
4) Depending on the installation position, T, K
2
, K
3
or R(L) must be
connected (see also”Installation instructions” page 27)
5) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
6) K
2
and K
3
Normally plugged
Bosch Rexroth AB, RE 15328/06.2021
14 Hägglunds SP 40 to SP 180 | Axial piston pump
Hägglunds SP 71
Fig. 22: Dimension SP 71
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
15
Table 13: Connections SP 71
Fig. 23: Hydraulic circuit for SP 71
Ports Size
1)
p
maxabs
[bar]
3)
State
A, B Pressure port SAE 1" code 62 400 O
S1 Suction port SAE 1" code 61
2)
30 O
ME Measuring port boost pump 9/16-18UNF-2B 40 X
E1 To pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
E2 From pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
K1 Flushing port 7/8-14UNF-2B 5 O
K2, K3 Flushing port 1 1/16-12UNF-2B 5 X
K4 Accumulator port 1 5/16-12UNF-2B 40 X
MK4, ME3 Measuring port ushing pressure 9/16-18UNF-2B 40 X
MA1, MB1 Measuring port operating pressure 7/16-20UNF-2B 400 X
MA2, MB2 Measuring port operating pressure M14x1.5 400 X
M1 Measuring port control/high pressure S8 DIN3852 From W 400 X
R(L) Return resp, aeration 1 1/16-12UNF-2B 4 O
4)
T Oil discharge 1 1/16-12UNF-2B
3)
4 X
4)
T1, T3 Drain port pressure relief valve 9/16-18UNF-2B 4 O
T2 Drain port shaft seal 9/16-18UNF-2B 4 O
U Flushing port (bearing ushing) 9/16-18UNF-2B
3)
7 X
XA2, XB2, XAB Pilot pressure port, pressure control 9/16-18UNF-2B 350 X
1) Depending on the application, momentary pressure peaks can oc-
cur. Keep this in mind when selecting measuring devices and t-
tings.
2) Only dimensions according to SAE J518, metric fastening thread
is a deviation from standard.
3) The countersink can be deeper than that specied in the standard.
4) Depending on the installation position, T, K
2
, K
3
or R(L) must be
connected (see also”Installation instructions” page 27)
5) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Bosch Rexroth AB, RE 15328/06.2021
16 Hägglunds SP 40 to SP 180 | Axial piston pump
Hägglunds SP 125
Fig. 24: Dimension SP 125
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
17
Table 14: Connections SP 125
Fig. 25: Hydraulic circuit for SP 125
1) Depending on the application, momentary pressure peaks can oc-
cur. Keep this in mind when selecting measuring devices and t-
tings.
2) Only dimensions according to SAE J518, metric fastening thread
is a deviation from standard.
3) The countersink can be deeper than that specied in the standard.
4) Depending on the installation position, T, K
2
, K
3
or R(L) must be
connected (see also”Installation instructions” page 27)
5) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Ports Size
1)
p
maxabs
[bar]
3)
State
A, B Pressure port SAE 1 1/4" code 62 400 O
S1 Suction port SAE 1" code 61
2)
30 O
ME Measuring port boost pump 9/16-18UNF-2B 40 X
E1 To pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
E2 From pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
K1 Flushing port 7/8-14UNF-2B 5 O
K2, K3 Flushing port 1 5/16-12UNF-2B 5 X
K4 Accumulator port 1 5/16-12UNF-2B 40 X
MK4, ME3 Measuring port ushing pressure 9/16-18UNF-2B 40 X
MA1, MB1 Measuring port operating pressure 7/16-20UNF-2B 400 X
MA2, MB2 Measuring port operating pressure M14x1.5 400 X
M1, M2 Measuring port control/high pressure M14x1.5 400 X
R(L) Return resp, aeration 1 5/16-12UNF-2B 4 O
4)
T Oil discharge 1 5/16-12UNF-2B
3)
4 X
4)
T1, T3 Drain port pressure relief valve 9/16-18UNF-2B 4 O
T2 Drain port shaft seal 9/16-18UNF-2B 4 O
U Flushing port (bearing ushing) 9/16-18UNF-2B
3)
7 X
XA1, XB1 Pilot pressure relief valve 9/16-18UNF-2B 350 X
XA2, XB2, XAB Pilot pressure port, pressure control 9/16-18UNF-2B 350 X
TD Drain M14x1.5 4 X
Bosch Rexroth AB, RE 15328/06.2021
18 Hägglunds SP 40 to SP 180 | Axial piston pump
Hägglunds SP 180
Fig. 26: Dimension SP 180
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
19
Table 15: Connections SP 180
Fig. 27: Hydraulic circuit for SP 180
Ports Size
1)
p
maxabs
[bar]
3)
State
A, B Pressure port SAE 1 1/4" code 62 400 O
S1 Suction port SAE 1" code 61
2)
30 O
ME3 Measuring port charge pressure 9/16-18UNF-2B 40 X
ME Measuring port control pressure 9/16-18UNF-2B 40 X
E1 To pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
E2 From pump mounted lter (not used by Hägglunds) M14 × 1.5 40 X
K1 Flushing port 7/8-14UNF-2B 5 O
K2, K3 Flushing port 1 5/16-12UNF-2B 5 X
K4 Accumulator port 1 5/16-12UNF-2B 40 X
MK4 Measuring port charge pressure 9/16-18UNF-2B 40 X
MA1, MB1 Measuring port operating pressure 7/16-20UNF-2B 400 X
MA2, MB2 Measuring port operating pressure M14x1.5 400 X
M1, M2 Measuring port control/high pressure M14x1.5 400 X
R(L) Return resp, aeration 1 5/16-12UNF-2B 4 O
4)
T Oil discharge 1 5/16-12UNF-2B
3)
4 X
4)
T1, T3 Drain port pressure relief valve 9/16-18UNF-2B 4 O
T2 Drain port shaft seal 9/16-18UNF-2B 40 O
U Flushing port (bearing ushing) 9/16-18UNF-2B
3)
7 X
XA1, XB1 Pilot pressure relief valve 9/16-18UNF-2B 350 X
XA2, XB2, XAB Pilot pressure port, pressure control 9/16-18UNF-2B 350 X
TD Drain M14x1.5 40 X
1) Depending on the application, momentary pressure peaks can oc-
cur. Keep this in mind when selecting measuring devices and t-
tings.
2) Only dimensions according to SAE J518, metric fastening thread
is a deviation from standard.
3) The countersink can be deeper than that specied in the standard.
4) Depending on the installation position, T, K
2
, K
3
or R(L) must be
connected (see also”Installation instructions” page 27)
5) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Bosch Rexroth AB, RE 15328/06.2021
20 Hägglunds SP 40 to SP 180 | Axial piston pump
Through drive
Hägglunds SP can be supplied with through drive despite
the external boost pump, in accordance with the type
code for tandem combinations on 2. The external boost
pump will be mounted on the second pump,see Fig. 28.
When ordering combination pumps, the type designations
of the 1st and 2nd pump must be connected by a “+”.
▶ Order example:
SP 180+125 SR-V-EP1234567
l
1
l
2
A
m
1
m
2
Table 16: Total length A
SP (2nd pump)
SP (1st pump) 40 71 125 180
40 805 mm – – –
71 834 mm 879 mm – –
125 924 mm 974 mm 1068 mm –
180 967 mm 1010 mm 1087 mm 1121 mm
Table 17: Permissible mass torque
Size 40 71 125 180
Permissible mass torque T
m
Nm 1800 2000 4200 4200
Permissible mass torque for dynamic mass
acceleration 10g ≙ 98.1 m/s
2
T
m
Nm 180 200 420 420
Weight (without boost pump) m
1,
m
2
kg 69 90 139 142
Distance from center of gravity l
1
mm 120 140 170 180
l
2
mm See Table 18
Through drive kit
The scope of delivery include: hub, mounting bolts, seal
and, if applicable, an intermediate ange. See Table 18 for
material numbers to the different through drive kits.
m
1
, m
2
[kg]
l
1
, l
2
[mm]
T
m
= (m
1
• l
1
+ m
2
•
l
2
+ m
3
• l
3
)
1
[Nm]
102
Fig. 28: Tandem pump
2nd pump
1st pump
Note!
If combining two pumps with external boost pumps a
tandem boost pump kit must also be used.
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
21
Overview of mounting options on SP
Table 18: Through drive kit for SP combinations
First pump Second pump
1)
Material number
through drive kit
1)
l
2
mm
40 40 R902466736
On request
71 40 R902448949
71 71 R902453552
125 40 R902460618
125 71 R902446419
125 125 R902439195
180 40 R902460618
180 71 R902446419
180 125 R902439195
180 180 R902434126
1) Hub for spline shaft according to DIN 5480 (e.g. W32)
Through drive kit
Fig. 29: Through drive kit
Bosch Rexroth AB, RE 15328/06.2021
22 Hägglunds SP 40 to SP 180 | Axial piston pump
SP 40 (second pump)
Dimensions through drive
Table 19: Dimensions through drive
Flange ISO 3019-2
Hub for splined
shaft DIN 5480
Availability over sizes
Diameter 40 71 125 180
125, 4-hole W32x2x14x9g ● ● ● ●
140, 4-hole W40x2x18x9g — ● ● ●
●
= Available
ø160
45º
M4
M3
M5
2)
1)
3)
M2
ø125
+0.02
+0.07
M1 (to mounting ange)
SP 71 (second pump)
ø180
45º
M4
M3
M2
M5
ø140
2)
+0.02
+0.07
1)
3)
M1(to mounting ange)
Fig. 30: Dimensions through drive SP 40 Fig. 31: Dimensions through drive SP 71
First pump
Size
M1 M2 M3 M4 M5
71 316 11.5 44 9
M12; 25 deep
125 373 12.5 50 9.5
180 397 12.5 43.8 9.5
First pump
Size
M1 M2 M3 M4 M5
40 288 12.5 41.4 9.5
M12; 25 deep
71 316 12.5 33.6 10
125 373 12.5 42 9.5
180 397 12.5 42 9.5
1) Thread according to DIN 13, see instruction manual for details on
tightening torques
2) Four mounting bolts and O-ring seal are included in the scope of
delivery.
3) Flange dimension second pump
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
23
Table 20: Dimensions through drive
Flange ISO 3019-2 Hub for splined
shaft DIN 5480
Availability over sizes
Diameter 40 71 125 180
160, 4-hole W50×2×24×8g – – ● ●
●
= Available
SP 125/SP 180 (second pump)
Fig. 32: Dimensions through drive SP 125/SP 180
1)
3)
M5
ø200
45˚
M4
M3
M2
+0.07
ø160
2)
+0.02
M1 (to mounting ange)
First pump
Size
M1 M2 M3 M4 M5
125 379 12.5 58 10
M16; 30 deep
180 403 12.5 58 10
1) Thread according to DIN 13, see instruction manual for details on
tightening torques
2) Four mounting bolts and O-ring seal are included in the scope of
delivery.
3) Flange dimension second pump
Bosch Rexroth AB, RE 15328/06.2021
24 Hägglunds SP 40 to SP 180 | Axial piston pump
Boost pump and valve technology
(see Fig. 34 for position references)
Boost pump (Pos. 9)
Sizes see Table 1
Control pressure relief valve (for EP and HD) (Pos. 8)
Direct operated, high-pressure-related relief.
At low working pressure, the auxiliary pump pressure is
regulated to the set value (e.g. 32bar). This pressure is
needed by the HD and EP controls to swivel out reliably.
Using this valve saves the use of a separate control pres-
sure pump.
If the working pressure exceeds the pressure of the boost
pump, control is provided by the check valve via the high
pressure. At the same time, the increase in working pres-
sure relieves the control pressure relief valve.
The boost pump pressure is hereby reduced to the set
boost pressure (e.g. 15bar).
This function leads to energy savings, improved efciency
and a longer service life of the auxiliary pump.
For setting values, see Table 6.
Flushing valve (Pos. 4)
To open the ushing valve safely, the pressure differential
between A and B is required, as shown in Fig. 33. The
required pressure at 1500 rpm. The circuit temperature
needs to be monitored to avoid any damage to the system.
Pressure compensator valve (Pos. 2)
The SP pump has one common integrated pressure
compensator relief valve (2) for both sides, A and B.
For different pressure setting between the sides, two
external pressure relief valves must be added. The valves
are connected to XA2 (A-port compensator setting) and
XB2 (B-port compensator setting). The external valves
must be drained to tank.
Observe that relief valve (2) must be set on a higher
pressure level than the two external relief valves.
These relief valves must be ordered separately and must
be installed on site. (They are not mounted on the pump)
(Spare part pump). If pump is in a new manufacturing of
a drive unit then these will of course be mounted in the
drive unit.
Standard value that is set on pressure compensation is
350 bar, if other value is needed add a comment when
ordering the pump.
High-pressure relief valve (Pos. 5)
Two pilot-operated pressure relief valves use pressure
limitation to prevent damage to the hydraulic pump result-
ing from overpressure. A pressure relief valve is assigned
to each pressure side.
Protection is provided by reducing the high pressure to
the low pressure side.
The pressure limitation is set by default to pressure com-
pensator (2) + 40 bar, if another setting is required add
that as a comment when order the pump.
Boost pressure
To prevent damage to the system, low pressure monitoring
is recommended, which monitors the static pressure
component. Port M
K4
are suitable, also M
E3
can be used.
In this datasheet all values for charge pressure monitoring
are refered to M
K4
. For normal operations, 15bar (mea-
sured in M
K4
) charge pressure is set. For operation in
applications where dynamic pressure drops may occur.a
higher charge pressure value must be set.
The lowest allowed value is 8 bar (occuring during 2 sec-
onds).
For shock load applications use an accumulatior in K
4
.
Fig. 33: Cracking pressure differential for ushing valve
0
1
2
3
4
5
6
7
0246
81
0
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
25
Table 21: Component descriptions
Components
1 EPG control
2 Pressure relief valve
3 Boost-pressure relief valve
4 Flushing valve
5 High-pressure relief valves
6 Bypass valve
7 Boost check valves
8 Control pressure relief valve
9 External boost pump
Fig. 34: Example circuit diagram SP 180
Bosch Rexroth AB, RE 15328/06.2021
26 Hägglunds SP 40 to SP 180 | Axial piston pump
Filtration types
1)
Without lter in the boost circuit
SP pumps are normally not congured for boost circuit
ltration.
Ports E
1
and E
2
are delivered plugged, pressure-proof and
internally connected.
Ports for external boost circuit ltration
A boost circuit lter can be connected between
boost(charge) pump and main pump (see Fig. 36 pos 10).
Table 22: Distance and port dimensions
Size M1 M2 Port E/P
40 178 342 ISO 8434-1 22L Male
71 202 377 ISO 8434-1 22L Male
125 257 445 ISO 8434-1 22L Male
180 257 471 ISO 8434-1 22L Male
Port P outlet boost pump.
Port E inlet boost ow on main pump.
Table 23: Component description
Components
1 EPG control
2 Pressure relief valve
3 Boost-pressure relief valve
4 Flushing valve
5 High-pressure relief valves
6 Bypass valve
7 Boost check valves
8 Control pressure relief valve
9 External boost pump
10 Filter with bypass
Fig. 35: Port locations
1) For components see Table 23 and ports, Table 12, Table 13,
Table 14 and Table 15
Fig. 36: Example Circuit diagram SP 180
1)
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
27
Installation instructions
General
The axial piston unit must be lled with hydraulic uid
and air bled during commissioning and operation. This
must also be observed following a longer standstill as the
axial piston unit may empty via the hydraulic lines.
With particular regard to the “drive shaft upwards” instal-
lation position, we recommend bearing ushing to lubricate
the front bearing and shaft seal at port U. See page 5.
The leakage in the housing area must be directed to the
reservoir via the highest drain port (T, R(L), K
2
, K
3
).
If a shared drain line is used for several units, make sure
that the respective case pressure is not exceeded. The
shared drain line must be dimensioned to ensure that the
maximum permissible case pressure of all connected units
is not exceeded in any operational conditions, particularly
at cold start. If this is not possible, separate reservoir
lines must be installed if necessary.
To achieve favorable noise values, decouple all connecting
lines using elastic elements and avoid above-reservoir
installation.
In all operating conditions, the suction lines and the drain
lines must ow into the reservoir below the minimum uid
level. The permissible suction height h
S
results from the
overall loss of pressure, it must not, however, be higher
than h
Smax
=800 mm.
The minimum suction pressure at
port S must also not fall below 0.8bar absolute during
operation.
For external boost pressure supply please refer to the
attachment pump data sheet for details on the minimum
suction pressure.
When designing the reservoir, ensure that there is ade-
quate spacing between the suction line and the drain line.
This minimizes oil turbulence and carries out degassing,
which prevents the heated hydraulic uid from being
sucked directly back in again.
Installation position
See the following examples (1 to 8) in Fig. 37 to Fig. 44.
Further installation positions are available upon request.
Usually in Hägglunds Drive Units the installation example 4
in Fig. 40 is used
Table 24: Important ports and distances when pump is installed
Key
S Suction port
T, K
2
, K
3
,
R(L)
Fluid lling + air bleeding (drain port)
A, B Pressure port
U Bearing ushing port
SB Bafe (bafe plate)
h
t min
Minimum required immersion depth (200 mm)
h
min
Minimum required distance to the reservoir bot-
tom (100 mm)
h
s max
Maximum permissible suction height 800 mm. To
be sure always check boost pump specication!
Note!
You can expect installation examples 2, 3, 6 and 7 to
affect the closed loop control. Due to gravity, dead
weight and case pressure, minor characteristic shifts
and actuating time changes may occur.
Bosch Rexroth AB, RE 15328/06.2021
28 Hägglunds SP 40 to SP 180 | Axial piston pump
1)
To air bleed the stroking chamber, use the highest port on the control
(see control data sheet
92080, 92084
)
2)
Observe the drawing of the pump is just symbolic and does not de-
scribe its correct shape
Installation position Air bleeding
1)
Filling
R(L) R(L)
SB
h
t min
h
min
T
R(L)
K
2
S
15 15 0
SB
R(L)
K
2
S
K
3
B(A)
h
t min
h
min
Installation position Air bleeding
1)
Filling
K
2;
R(L)
plug
K
2
Installation position Air bleeding
1)
Filling
K
3;
R(L)
plug
K
3
15 15 0
SB
R(L)
K
2
S
K
3
B(A)
h
t min
h
min
SB
R(L)
K
2
S
U
T
h
t min
h
min
Installation position Air bleeding
1)
Filling
T; R(L)
plug
T
Below-reservoir installation (recommended)
Below-reservoir installation means that the axial piston
unit is installed outside of the reservoir and below the
minimum uid level of the reservoir.
Fig. 37: Example 1
2)
Fig. 38: Example 2
2)
Fig. 39: Example 3
2)
Fig. 40: Example 4
2)
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
29
1)
To air bleed the stroking chamber, use the highest port on the control
(see control data sheet
92080, 92084
)
2)
Observe the drawing of the pump is just symbolic and does not de-
scribe its correct shape
Installation position Air bleeding
1)
Filling
SB
R(L)
K
2
S
T
h
t min
h
min
h
s max
R(L) R(L)
Installation position Air bleeding
1)
Filling
15 15 0
SB
R(L)
K
2
S
K
3
B(A)
h
t min
h
min
h
s max
K
2 ;
R(L)
plug
K
2
Installation position Air bleeding
1)
Filling
SB
R(L)
K
2
S
K
3
B(A)
h
t min
h
min
h
s max
15 15 0
K
3 ;
R(L)
plug
K
3
Installation position Air bleeding
1)
Filling
SB
R(L)
K
2
S
T
U
h
t min
h
min
h
s max
T; R(L)
plug
T
Above-reservoir installation
Above-reservoir installation means that the axial piston
unit is installed above the minimum uid level of the
reservoir.
A check valve in the drain line is to be avoided. Exceptions
may be permissible, please consult your Bosch Rexroth
representative rst.
Fig. 41: Example 5
2)
Fig. 42: Example 6
2)
Fig. 43: Example 7
2)
Fig. 44: Example 8
2)
Bosch Rexroth AB, RE 15328/06.2021
30 Hägglunds SP 40 to SP 180 | Axial piston pump
Project planning notes
▶ The pump SP is designed to be used in closed circuit.
▶ The project planning, installation and commissioning of
the axial piston unit requires the involvement of quali-
ed skilled personnel.
▶ Before using the axial piston unit, please read the
corresponding instruction manual (92100-01-B) com-
pletely and thoroughly. If necessary, this can be
requested from Bosch Rexroth.
▶ The specied data and notes contained herein must be
observed.
▶ Preservation: Our axial piston units are supplied as
standard with preservative protection for a maximum
of 12 months. If longer preservative protection is
required (maximum 24 months), please specify this in
plain text when placing your order. The preservation
periods apply under optimal storage conditions, details
of which can be found in the data sheet 90312 or in
the instruction manual.
▶ Depending on the operating conditions of the axial
piston unit (working pressure, uid temperature), the
characteristic curve may shift.
▶ Not all versions of the product are approved for use in
a safety function according to ISO13849. Please con-
sult the responsible contact person at Bosch Rexroth if
you require reliability parameters (e.g. MTTF
d
) for
functional safety.
Safety instructions
▶ During and shortly after operation, there is a risk of
getting burnt on the axial piston unit and especially on
the solenoids. Take the appropriate safety measures
(e.g. by wearing protective clothing).
▶ Moving parts in control equipment (e.g. valve spools)
can, under certain circumstances, get stuck in position
as a result of contamination (e.g. impure hydraulic
uid, abrasion, or residual dirt from components). As a
result, the hydraulic uid ow and the build-up of
torque in the axial piston unit can no longer respond
correctly to the operator's specications. Even the use
of various lter elements (external or internal ow
ltration) will not rule out a fault but merely reduce
the risk. The machine/system manufacturer must test
whether remedial measures are needed on the machine
for the application concerned in order to bring the
driven consumer into a safe position (e.g. safe stop)
and ensure any measures are properly implemented.
RE 15328/06.2021, Bosch Rexroth AB
Axial piston pump | Hägglunds SP 40 to SP 180
31
Related documents
For more information of pump in drive systems see documents in Table 25
Table 25: Related documents
Title Document no Document type
Hägglunds DUe drive unit RE 15325 Data sheet
Hägglunds DUc drive unit RE 15326 Data sheet
Hydraulic Fluids Based on Mineral Oil and Related Hydrocarbons 90220 Data sheet
Environmentally Acceptable Hydraulic Fluids 90221 Data sheet
Axial Piston Variable Pump A4VSG series 1x and 3x 92100 Data sheet
Storage and preservation of axial piston units 90312 Data sheet
Electro-hydraulic control with proportional solenoid 92084 Data sheet
Control devices HD 92080 Data sheet
Hydraulic uid quick reference RE 15414 Data sheet
Hägglunds DUe drive unit RE 15325-WA Installation & Maintenance manual
Hägglunds DUc drive unit RE 15326_WA Installation & Maintenance manual
Axial Piston Variable Pump A4VSG, Series 10, 11 and 30 92100-01-B Instruction manual
Bosch Rexroth AB
895 80 Mellansel, Sweden
Tel: +46 (0) 660 870 00
Fax: +46 (0) 660 871 60
www.hagglunds.com
© All rights at Bosch Rexroth AG The data specied 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 ourinformation. The information given does
not release the user from the obligation of own judgment and verication. It
must be remembered that our products are subject to a natural process of
wear and aging
Bosch Rexroth AB, RE 15328/06.2021