Bosch rexroth 12 Series - Hydraulically Connecting the Axial Piston Unit

RE 92802-01-B/2023-03-27, BoschRexrothAG
Installation | A15VSO/A15VLO series 12 35/60
The setting screws are protected against unintentional adjustment by caps.
Adjusting the setting screws will render the warranty void. If you need to change
the settings, please contact your local contact person; you can nd their contact
information at
https://addresses.boschrexroth.com
3� For versions with through drive, install the auxiliary pump according to the
pump manufacturer's manual. The protective cover (5) is not pressure-resistant
and should not be used during operation.
If the axial piston unit is to be operated without through drive unit, it has
to be closed by means of apressure-tight cover before the commissioning!
Forquestions regarding conversions, contact your proper BoschRexroth
service partner or the service department of the plant that manufactured the
axialpiston unit; see chapter 10.5 "Spare parts" on page 50�
7�4�8 Hydraulically connecting the axial piston unit
NOTICE
Insufcient suction pressure!
Generally, aminimum permissible suction pressure at portS is specied for axial
piston pumps in all installation positions. If the pressure at portS drops below
the specied values, damage may occur which may lead to the axial piston pump
being damaged beyond repair!
▶ Make sure the required suction pressure is maintained. This is inuenced by:
– The piping (e.g.suction cross-section, pipe diameter, length of suction line)
– The position of the reservoir
– The viscosity of the hydraulic uid
– A lter element or check valve in the suction line (check the level of
contamination of the lter element regularly)
– The geodesic height of the place of use
The machine/system manufacturer is responsible for dimensioning of the lines.
Connect the axial piston unit to the rest of the hydraulic system in accordance with
the hydraulic circuit diagram of the machine/system manufacturer.
The ports and fastening threads are designed for the p
max
permissible pressures of
the respective ports, see Table 9 "Ports A15VSO/A15VLO series 12" on page 38�
The machine/system manufacturer is required to ensure that the connecting
elements and lines correspond to the specied application conditions
(pressure, ow, hydraulic uid, temperature) with the necessary safety factors.
Connect only hydraulic lines that are match the axial piston unit port
(pressure level, size, system of units).
Observe the following information when routing the suction, pressure and drain
lines.
• Lines and hoses should be assembled without pre-charge pressure so no further
mechanical forces are applied during operation that will reduce the service life of
the axial piston unit and, possibly, the entire machine/system.
Information on
routing of lines