Maintenance and repair 51/68
RE 92105-01-B/06.2017, A4CSG, Series 3x,
Bosch Rexroth AG
10.3 Maintenance
The axial piston unit is low-maintenance when used as intended.
The service life of the axial piston unit is heavily dependent on the quality of the
hydraulic fluid. For this reason, we recommend changing the hydraulic fluid at least
once per year or every 2000 operating hours (whichever occurs first) or having it
analyzed by the hydraulic fluid manufacturer or a laboratory to determine its
suitability for further use.
The service life of the axial piston unit is limited by the service life of the built-in
bearings and of the shaft seal.
The maintenance interval for replacing the bearings and the shaft seal is to be
observed.
Have the service performed by Bosch Rexroth Service upon reaching the operating
hours listed in the following table or every four years, whichever comes first; for the
address, see chapter 10.5 “Spare parts” on page 55.
If your application data differs from that shown here, request an individual
calculation from your sales engineer.
Table 13: Maintenance interval
working pressure
[bar]
Rotational speed n
[rpm]
Operating hours [h]
350
1800
800
200
1800
6000
The following diagrams are suitable as an orientation for the service life:
L 10h 4000
0
50
100
150
200
250
300
350
L 10h 6000
L 10h 10000
L 10h 20000
L 10h 30000
L 10h 40000
L 10h 60000
L 10h 100000
p
A+B
[bar]
0
5
10
15
α
[°]
Fig. 14: Service life, size 250 for 1500 rpm
Changing hydraulic fluid
Maintenance interval
Size 250
