Axial piston fixed pump

A17FO Series 10
RE 91520
Issue: 11.2015
Replaces: 10.2014

▶▶ High-pressure pump for use in commercial vehicles

▶▶ Sizes 23 to 107
▶▶ Nominal pressure/maximum pressure 350/400 bar
▶▶ Bent-axis design
▶▶ Open circuit

Features Contents
▶▶ Flange and shaft designed for direct mounting on the Ordering code 2
power take-off of commercial vehicles Hydraulic fluid 3
▶▶ Weight-optimized thanks to diecast aluminum housing. Operating pressure range 4
▶▶ No case drain line necessary Technical Data 5
▶▶ Reduced noise Direction of rotation 7
▶▶ Straightforward adjustment of direction of drive Dimensions, sizes 23, 32 8
▶▶ Excellent suction performance Dimensions, size 45 9
▶▶ High total efficiency Dimensions, size 63 10
▶▶ Long service life Dimensions, size 80 11
Dimensions, size 107 12
Accessories 13
Installation instructions 15
Other related documents 15
Project planning notes 16
Safety instructions 16

 RE 91520/11.2015, Bosch Rexroth AG

2 A17FO Series 10 | Axial piston fixed pump
Ordering code

Ordering code

01 02 03 04 05 06 07 08 09 10 11
A17F O / 10 N L W K0 E8 1 –

Axial piston unit

01 Bent-axis design, fixed, nominal pressure 350 bar, maximum pressure 400 bar, for commercial vehicles (truck) A17F

Operating mode
02 Pump, open circuit O

Sizes (NG)
03 Geometric displacement, see table of values on page 5 023 032 045 063 080 107

Series
04 Series 1, index 0 10

Configuration of port and fastening threads

05 Metric, port threads with profiled sealing ring according to DIN 3852 N

Direction of rotation1)
06 Viewed on drive shaft counter-clockwise L

Sealing material
07 FKM (fluor-caoutchouc) including the 2 shaft seal rings in FKM W

Mounting flange
08 Special flange ISO 7653-1985 (for trucks) K0

Drive shaft
09 Splined shaft similar to DIN ISO 14 (for trucks) E8

Service line port

10 Threaded ports A and S at rear 1

Standard / special version

11 Standard version 0
Special version S

Note
Note the project planning notes on page 16.

1) Changing the direction of rotation see instruction manual 91520-01-B,

chapter 6.4.2

Bosch Rexroth AG, RE 91520/11.2015

 Axial piston fixed pump | A17FO Series 10 3
 Hydraulic fluid

Hydraulic fluid

The fixed pump A17FO is designed for operation with HLP Notes on selection of hydraulic fluid
mineral oil according to DIN 51524. The hydraulic fluid should be selected such that the operat-
Application instructions and requirements for hydraulic ing viscosity in the operating temperature range is within
fluids should be taken from the following data sheets the optimum range (νopt see selection diagram).
before the start of project planning:
▶▶ 90220: Hydraulic fluids based on mineral oils and Note
related hydrocarbons At no point of the component may the temperature be
▶▶ 90221: Environmentally acceptable hydraulic fluids higher than 115 °C. The temperature difference specified in
▶▶ 90222: Fire-resistant, water-free hydraulic fluids the table is to be taken into account when determining the
(HFDR/HFDU) viscosity in the bearing.
Please contact us if the above conditions cannot be met
The axial piston unit is not suitable for operation with due to extreme operating parameters.
water-containing HF hydraulic fluid.

Viscosity and temperature of hydraulic fluids

Viscosity Temperature Comment
Cold start νmax ≤ 1600 mm /s2
θSt ≥ –25 °C1)
t ≤ 3 min, without load (p ≤ 50 bar), n ≤ 1000 rpm
Permissible temperature difference ΔT ≤ 25 K between axial piston unit and hydraulic fluid in the system
Warm-up phase ν < 1600 to 400 mm2/s at p ≤ 0.7 × pnom, n ≤ 0.5 × nnom and t ≤ 15 min
Continuous operation ν = 400 to 10 mm2/s this corresponds, for VG 46 for example, to a temperature range
of +5 °C to +85 °C (see selection diagram)
θ = -25 °C to +103 °C measured at air bleed port R
observe permissible temperature range of the shaft seal ring1)
(ΔT = approx. 12 K between bearing/shaft seal and port R)
νopt = 36 to 16 mm2/s range of optimum operating viscosity and efficiency
Short-term operation νmin ≥ 7 mm2/s t < 3 min, p < 0.3 × pnom

▼▼ Selection diagram
Warm-up phase
Maximum permissible viscosity for cold start
1600
1000
600
400

200
VG 68
VG 46
VG

VG 32
VG 2

10
2
Continuous operation

Viscosity ν [mm2/s]
0

100

60
40
36

20
Optimum operating viscosity range vopt 16
Optimum efficiency
10
Minimum permissible viscosity for short-term operation
7
−40 −25 −10 0 10 30 50 70 90 115
Minimum permissible temperature for cold start Temperature θ [°C]

1) The FKM shaft seal is permissible for temperatures of –25 °C to

+115 °C, please contact us for temperatures below –25 °C.

 RE 91520/11.2015, Bosch Rexroth AG

 4 A17FO Series 10 | Axial piston fixed pump
Operating pressure range

Filtration of the hydraulic fluid

Finer filtration improves the cleanliness level of the hydraulic
fluid, which increases the service life of the axial piston unit.
A cleanliness level of at least 20/18/15 is to be maintained
according to ISO 4406.
At very high hydraulic fluid temperatures (90 °C to maximum
103 °C, measured at air bleed port R), a cleanliness level of at
least 19/17/14 according to ISO 4406 is necessary.

Operating pressure range

Pressure at service line port A (high-pressure side) Definition

Nominal pressure pnom 350 bar absolute The nominal pressure corresponds to the maximum design pres-
sure.
Maximum pressure pmax 400 bar absolute The maximum pressure corresponds to the maximum operating
Single operating period 5 s pressure within the single operating period. The sum of the single
operating periods must not exceed the total operating period.
Total operating period 50 h
Minimum pressure (high-pressure side) 10 bar absolute Minimum pressure at the high-pressure side (A) which is required
in order to prevent damage to the axial piston unit.
Rate of pressure change RA max 9000 bar/s Maximum permissible rate of pressure rise and reduction during
a pressure change over the entire pressure range.
Pressure at suction port S (inlet)
Minimum pressure pS min 0.8 bar absolute Minimum pressure at suction port S (inlet) which is required in order
Maximum pressure pS max 2 bar absolute to prevent damage to the axial piston unit. The minimum pressure is
dependent on the speed of the axial piston unit.

▼▼ Rate of pressure change RA max ▼▼ Pressure definition

pnom t2
Single operating period t1 tn
∆t
Maximum pressure pmax
Nominal pressure pnom
Pressure p

Pressure p

∆p

Time t
Minimum pressure (high-pressure side)

Time t

Total operating period = t1 + t2 + ... + tn

Note
Operating pressure range valid when using hydraulic
fluids based on mineral oils. Values for other hydraulic
fluids, please contact us.

Bosch Rexroth AG, RE 91520/11.2015

  Axial piston fixed pump | A17FO Series 10 5
 Technical Data

Technical Data

Size NG 23 32 45 63 80 107
Displacement, geometric, per revolution Vg cm 3
22.9 32 45.6 63 80.4 106.7
Speed maximum1) nnom2) rpm 3050 2750 2650 2200 2150 2000
nmax3) rpm 4300 3900 3800 3200 3100 2800
Flow at nnom qv l/min 70 88 121 139 173 213
Power at nnom and Δp = 350 bar P kW 41 51 71 81 101 124
Torque at Δp = 350 bar T Nm 127 178 254 351 448 594
Rotary stiffness c kNm/rad 2.56 3.12 4.18 6.25 8.73 11.2
Moment of inertia for rotary group JTW kgm 2
0.0012 0.0012 0.003 0.0042 0.0072 0.0116
Maximum angular acceleration α rad/s² 6500 6500 14600 7500 6000 4500
Case volume V l 0.25 0.29 0.4 0.5 0.6 0.75
Mass moment TG Nm 4.7 4.7 8.6 9.9 15.3 20
Mass (approx.) m kg 5.9 5.9 8.4 9.3 12.3 15.0

▼▼ Maximum speed (limiting speed)

Determining the operating characteristics
2
Inlet pressure pS abs [bar]

Vg × n × ηv
Flow qv = [l/min]
1000

1.5 Vg × Δp
Torque T = [Nm]
20 × π × ηhm

2 π × T × n qv × Δp
1 Power P = = [kW]
60000 600 × ηt
0.8
0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 Key
Speed n/nnom Vg Displacement per revolution [cm3]
Δp Differential pressure [bar]
n Speed [rpm]
ηv Volumetric efficiency
ηhm Hydraulic-mechanical efficiency
ηt Total efficiency (ηt = ηv × ηhm)

Note
▶▶ Theoretical values, without efficiency 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. Other permissible limit values, such as
speed variation, reduced angular acceleration as a
function of the frequency and the permissible angular
acceleration at start (lower than the maximum angular
acceleration) can be found in data sheet 90261.

1) The values are applicable:

– for the optimum viscosity range from νopt = 36 bis 16 mm2/s
– for hydraulic fluids based on mineral oils.
2) The values apply at absolute pressure pabs = 1 bar at suction port S
3) Maximum speed (speed limit) with increased inlet pressure pabs at
suction port S (see diagram).

 RE 91520/11.2015, Bosch Rexroth AG

6 A17FO Series 10 | Axial piston fixed pump
Operating pressure range

Permissible axial forces of the drive shaft

Size NG 23 32 45 63 80 107
Maximum axial force, at standstill or + Fax max N 0 0 0 0 0 0
pressure-free operation Fax +
– − Fax max N 24 33 43 53 60 71

Note
▶▶ The values given are maximum values and do not apply
to continuous operation.
▶▶ The permissible axial force in direction −Fax is to be
avoided as the lifetime of the bearing is reduced.
▶▶ Radial forces are not permissible.

Bosch Rexroth AG, RE 91520/11.2015

 Axial piston fixed pump | A17FO Series 10 7
 Direction of rotation

Direction of rotation

The direction of rotation of the axial piston unit is defined

by means of a pressure connection screwed into the ser-
vice line port and can easily be changed.
By changing the pressure connection, the service line port
and the suction port are exchanged. As a result, the permis-
sible drive direction is changed. This is necessary when
mounting on a power take-off with counter-clockwise rota-
tion, for example. The procedure for conversion of the
pressure nipple can be found in the instruction manual
(91520-01-B, chapter 6.4.2 “Direction of rotation and
change of direction of rotation”).

Direction of rotation on delivery

On delivery, the pressure connection (1) is pre-assembled
in the right-hand service line port of the axial piston unit.
The permissible drive direction of the pump looking at the
drive shaft: counter-clockwise. The power take-off turns
clockwise.
Note
The pressure connection is pre-installed upon delivery and
must be tightened with the torque stipulated for the appro-
priate thread size prior to installation (see instruction
manual).

X
2

Drehrichtung
der Pumpe
Ansicht X

1 Druckstutzen
(im rechten Anschluss)
2 1 2 Sauganschluss S

 RE 91520/11.2015, Bosch Rexroth AG

8 A17FO Series 10 | Axial piston fixed pump Dimensions [mm]
Dimensions, sizes 23, 32

Dimensions, sizes 23, 32

185 107
173 96
159 80
15
9
R

58
-0.03
ø80-0.06

105
80
40°

25.8

13
76
88
103
0.7
43
81
Center of gravity
X

Drive shaft
Splined shaft similar to DIN ISO 14
Detail X
E8 ‒ 8x32x35
36.8
28
S A
9.5
G3/4
88
ø34.9-0.1

ø38.4
ø42

G1/2
ø8.1
M12 x 1.751)

12 51.8
26.1 88
55 91
Groove for retaining ring 35 × 1.5 DIN 471

Ports Standard Size pmax abs [bar]2) State5)

A Service line port DIN ISO 228 G1/2; 14 deep 400 O
S Suction port DIN ISO 228 G3/4; 16 deep 2 O
R Air bleed port DIN 3852 4)
M10 x 1, 8 deep 2 X3)

1) Center bore according to DIN 332 (thread according to DIN 13)

2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) Only open port R for filling and air bleeding.
4) The spot face can be deeper than as specified in the appropriate
standard.
5) O = Must be connected (plugged on delivery)
X = Plugged (in normal operation)

Bosch Rexroth AG, RE 91520/11.2015


Dimensions [mm] Axial piston fixed pump | A17FO Series 10 9
 Dimensions, size 45

Dimensions, size 45

223 107
210 96
80
194
15
R
9

63
R132
-0.03
ø80-0.06

108

105
80
40°

29

13
102
89

119
0.8
43 103
104

Center of gravity
X

Drive shaft
Splined shaft similar to DIN ISO 14 Detail X
E8 ‒ 8x32x35
36.8
28 S A
9.5

G3/4
108
ø34.9-0.1

G1
ø38.4
ø42
ø8.1
M12 x 1.751)

12
58.8
26.1
55 108

Groove for retaining ring 35 × 1.5 DIN 471

Ports Standard Size pmax abs [bar]2) State5)

A Service line port DIN ISO 228 G3/4; 16 deep 400 O
S Suction port DIN ISO 228 G1; 18 deep 2 O
R Air bleed port DIN 3852 4)
M10 x 1, 8 deep 2 X3)

1) Center bore according to DIN 332 (thread according to DIN 13)

2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) Only open port R for filling and air bleeding.
4) The spot face can be deeper than as specified in the appropriate
standard.
5) O = Must be connected (plugged on delivery)
X = Plugged (in normal operation)

 RE 91520/11.2015, Bosch Rexroth AG

10 A17FO Series 10 | Axial piston fixed pump Dimensions [mm]
Dimensions, size 63

Dimensions, size 63

232 107
219 96
203 80
15 R
9

63
R132
-0.03
ø80-0.06

108

105
80
°
40

32

13
96
110
126
0.8
43 103
109

Center of gravity
X

Drive shaft
Splined shaft similar to DIN ISO 14
E8 ‒ 8x32x35 Detail X
36.8
28 S A
9.5
ø34.9-0.1

G3/4
ø38.4

108

G1
ø42
ø8.1
M12 x 1.751)

12
26.1 64
55 108
Groove for retaining ring 35 × 1.5 DIN 471

Ports Standard Size pmax abs [bar]2) State5)

A Service line port DIN ISO 228 G3/4; 16 deep 400 O
S Suction port DIN ISO 228 G1; 18 deep 2 O
R Air bleed port DIN 3852 4)
M10 x 1, 8 deep 2 X3)

1) Center bore according to DIN 332 (thread according to DIN 13)

2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) Only open port R for filling and air bleeding.
4) The spot face can be deeper than as specified in the appropriate
standard.
5) O = Must be connected (plugged on delivery)
X = Plugged (in normal operation)

Bosch Rexroth AG, RE 91520/11.2015


Dimensions [mm] Axial piston fixed pump | A17FO Series 10 11
 Dimensions, size 80

Dimensions, size 80

261 107
245 96
227 80
15
R
9

67.5
R118
ø80-0.06
-0.03

121

105
80
°
40

36

13
105
120
140
1.0
43 114
127

Center of gravity
X

Drive shaft
Splined shaft similar to DIN ISO 14 Detail X
E8 ‒ 8x32x35
36.8 S A
28
9.5
G1 1/4
117

G1
ø34.9-0.1

ø38.4
ø42
ø8.1
M12 x 1.751)

12 69
26.1 117
55 124

Groove for retaining ring 35 × 1.5 DIN 471

Ports Standard Size pmax abs [bar]2) State5)

A Service line port DIN ISO 228 G1; 18 deep 400 O
S Suction port DIN ISO 228 G1 1/4; 20 deep 2 O
R Air bleed port DIN 3852 4)
M10 x 1, 8 deep 2 X3)

1) Center bore according to DIN 332 (thread according to DIN 13)

2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) Only open port R for filling and air bleeding.
4) The spot face can be deeper than as specified in the appropriate
standard.
5) O = Must be connected (plugged on delivery)
X = Plugged (in normal operation)

 RE 91520/11.2015, Bosch Rexroth AG

12 A17FO Series 10 | Axial piston fixed pump Dimensions [mm]
Dimensions, size 107

Dimensions, size 107

272 107
256 96
238 80
15 R
9

73.5
-0.03
ø80-0.06

105
133

80
°
40

13
41
114
129
149
1.0
43 120
136

Center of gravity X

Drive shaft
Splined shaft similar to DIN ISO 14 Detail X
E8 ‒ 8x32x35
36.8 S A
28
9.5
G1 1/4
129

G1
ø34.9-0.1

ø38.4
ø42
ø8.1
M12 x 1.751)

12
77
26.1
129
55

Groove for retaining ring 35 × 1.5 DIN 471

Ports Standard Size pmax abs [bar]2) State5)

A Service line port DIN ISO 228 G1; 18 deep 400 O
S Suction port DIN ISO 228 G1 1/4; 20 deep 2 O
R Air bleed port DIN 38524) M10 x 1, 8 deep 2 X3)

1) Center bore according to DIN 332 (thread according to DIN 13)

2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) Only open port R for filling and air bleeding.
4) The spot face can be deeper than as specified in the appropriate
standard.
5) O = Must be connected (plugged on delivery)
X = Plugged (in normal operation)

Bosch Rexroth AG, RE 91520/11.2015

Axial piston fixed pump | A17FO Series 10 13
Dimensions [mm]
Accessories

Accessories

Suction stud

▼▼ Dimensions

K4
K4 K5
K5 K1
K4 K3
K5 K
K3 1

K6
K1
K3
K2
K0

K6
K2
K0
SW

K0
K2
SW
SW

K7 K7
K7

K9
K9
K9

K8
K8

K8

Version Pump size Hose Material Thread K1 K2 K3 K4 K5 K6 K7 K8 K9 SW

nominal number K0
width
23, 32 1 1/2" R909831856 G3/4 39 18 33.5 70 54 ‒ 221 132 186 41
45 1 1/2" G1 39 23.5 33.5 72 54 ‒ 248 139 197 41
R902600251
63 1 1/2" G1 39 23.5 33.5 72 54 ‒ 257 146 204 41
Straight 63 2" R902602028 G1 51 26 44 82 64 ‒ 268 157 215 55
80 2" G1 1/4 51 30 44 85 65 ‒ 295 168 232 55
R902600252
107 2" G1 1/4 51 30 44 85 65 ‒ 306 177 245 55
107 2 1/2" R902601630 G1 1/4 63 31 54 82 64 ‒ 308 180 248 65
23, 32 1 1/2" R909831601 G3/4 39 20 31 101 82 43 259 126 180 36
45 1 1/2" G1 39 26 31 101 82 45 287 132 190 41
R909831600
63 1 1/2" G1 39 26 31 101 82 45 296 139 197 41
45° 63 2" R902602029 G1 51 26 43 100 81 44 295 145 203 41
80 2" G1 1/4 51 34 43 101 81 40 317 156 220 50
R909831597
107 2" G1 1/4 51 34 43 101 81 40 328 165 234 50
107 2 1/2" R902601631 G1 1/4 63 35 54 100 81 44 331 169 237 50
23, 32 1 1/2" R909831602 G3/4 39 20 31 62 43 81 265 117 171 36
45 1 1/2" G1 39 26 31 64 44 85 296 127 185 41
R909831599
63 1 1/2" G1 39 26 31 64 44 85 305 134 192 41
90°
63 2" R902602030 G1 51 26 43 62 42 81 305 138 196 41
80 2" G1 1/4 51 35 43 63 43 80 330 144 208 50
R909831598
107 2" G1 1/4 51 35 43 63 43 80 341 153 221 50

The suction stud is not included in the scope of delivery

and must be ordered separately.

 RE 91520/11.2015, Bosch Rexroth AG

14 A17FO Series 10 | Axial piston fixed pump Dimensions [mm]
Dimensions, size 107

Notes on suction line Coupling flange

▶▶ Keep as short and straight as possible, without sharp bend There are special, modified coupling flanges in 4-hole and
▶▶ Use a supporting ring for plastic hoses 6-hole design for the cardan shaft drive.
▶▶ Use two hose clamps to protect the suction hose against The coupling flange is not included in the scope of delivery
air suction and must be ordered separately.
▶▶ Note pressure resistance of suction hose compared to
ambient pressure ▼▼ 4-hole coupling flange, complete – ø 90
Material number: R902060152

Replacing seals max. 60.7

60.7
Socket-head screw DIN 912
The O-rings used as seals to prevent air from entering the 2.3 6 M12 × 35 - 10.9
suction line are to be replaced after every removal and new
installation in order to guarantee complete sealing.
Material number for O-rings:

ø47-0.025
▶▶ R909083796: O-ring for suction stud G3/4

ø90
0
▶▶ R909083802: O-ring for suction stud G1
▶▶ R909083808: O-ring for suction stud G1 1/4

42.5 ø8.5
48.2 ø74.5

▼▼ 6-hole coupling flange, complete – ø 100

Material number: R902060153

60.7
max. 60.7
Socket-head screw DIN 912
2.3 7 M12 × 35 - 10.9
ø57-0.046
ø99
0

42.5 ø8.5
48.2 ø84

Note
▶▶ Assembly of the coupling flange is carried out by pull-
ing onto the drive shaft with the aid of the threaded
bore in the drive shaft end.
▶▶ The coupling flange must be clamped on the drive
shaft using a socket-head screw. In addition, perma-
nent lubrication should be applied between the drive
shaft and the coupling flange.
▶▶ The socket-head screw should be secured in a suitable
manner (e.g. gluing with Loctite 276) and tightened
with a tightening torque of 130 Nm.
▶▶ Sudden axial impact upon the drive shaft will lead to
rotary group damage and therefore must be avoided.

Bosch Rexroth AG, RE 91520/11.2015

 Axial piston fixed pump | A17FO Series 10 15
 Installation instructions

Installation instructions

General Above-reservoir installation

During commissioning and operation, the axial piston unit Above-reservoir installation means that the axial piston unit
must be filled with hydraulic fluid and air bled. This must is installed above the minimum fluid level of the reservoir.
also be observed following a long standstill as the axial Observe the maximum permissible suction height
piston unit can empty via the hydraulic lines. hS max = 800 mm.
The pump housing is internally connected to the suction Installation position Air bleed Filling
chamber. A separate drain line from the housing to the 3 R F
R F
reservoir is not needed.
To achieve favorable noise values, decouple all connecting
lines using elastic elements and avoid above-reservoir
installation.
S hS max
In all operating conditions, the suction line must flow into the
reservoir below the minimum fluid level. The permissible ht min
suction height hS results from the overall loss of pressure.
hmin
However, it must not be higher than hS max = 800 mm. The
minimum suction pressure at port S must also not fall below 4
S
S S
0.8 bar absolute during operation and during cold start.

Installation position hS max

See the following examples 1 to 4. R
Further installation positions are available upon request.
Recommended installation position: 1 and 2. ht min

hmin
Below-reservoir installation (standard)
Below-reservoir installation means that the axial piston unit Key
is installed outside of the reservoir below the minimum F Filling/air bleed
fluid level. R Air bleed port
S Suction port
Installation position Air bleed Filling
1 R S ht min Minimum required immersion depth (200 mm)
ht min hmin Minimum required distance to reservoir bottom (100 mm)

hmin hS max Maximum permissible suction height (800 mm)

R
Note
Port F is part of the external piping and must be provided
on the customer side to make filling and air bleeding
S
easier.
2 – S
ht min

hmin Other related documents

S
Other pumps with special characteristics and dimensions
for use in commercial vehicles can be found in the following
data sheets:
R
▶▶ 91510: Fixed pump A17FNO, 250/300 bar
▶▶ 92270: Variable pump, A18VO 350/400 bar
▶▶ 92280: Variable pump, A18VLO 350/400 bar

 RE 91520/11.2015, Bosch Rexroth AG

16 A17FO Series 10 | Axial piston fixed pump
Project planning notes

Project planning notes

▶▶ The A17FO pump is designed to be used in open circuits. ▶▶ Working ports:

▶▶ The project planning, installation and commissioning of –– The ports and fastening threads are designed for the
the axial piston unit requires the involvement of quali- specified maximum pressure. The machine or system
fied personnel. manufacturer must ensure that the connecting ele-
▶▶ Before using the axial piston unit, please read the corre- ments and lines correspond to the specified applica-
sponding instruction manual completely and thoroughly. If tion conditions (pressure, flow, hydraulic fluid, tem-
necessary, these can be requested from Bosch Rexroth. perature) with the necessary safety factors.
▶▶ Before finalizing your design, please request a binding –– The service line ports and function ports can only be
installation drawing. used to accommodate hydraulic lines.
▶▶ The specified data and notes must be observed.
▶▶ Depending on the operating conditions of the axial
piston unit (operating pressure, fluid temperature), the Safety instructions
characteristic may shift.
▶▶ Preservation: Our axial piston units are supplied as ▶▶ During and shortly after operation, there is a risk of
standard with protection to preserve for a maximum of burns on the axial piston unit and especially on the
12 months. If longer preservative protection is required solenoids. Take appropriate safety measures (e.g. by
(maximum 24 months), please specify this in plain text wearing protective clothing).
when placing your order. The preservation periods apply
under optimal storage conditions, details of which can
be found in the data sheet 90312 or the instruction
manual.
▶▶ Not all variants of the product are approved for use in
safety functions according to ISO 13849. Please consult
the responsible contact person at Bosch Rexroth if you
require reliability parameters (e.g. MTTFd) for functional
safety.
▶▶ Be sure to add a pressure relief valve to the hydraulic
system.
▶▶ Please note the details regarding the tightening torques
of port threads and other threaded joints.

Bosch Rexroth AG © This document, as well as the data, specifications and other information set
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Bosch Rexroth AG, RE 91520/11.2015