Hydraulically Connecting The Axial Piston Unit - Bosch Rexroth A10VO Instruction Manual

3. For the version with through drive, first remove the spacer (4), see chapter 7.4.7
"Remove the spacer (for version with through drive)" on page 33 and fit the
auxiliary pump in accordance with the pump manufacturer's instructions. The
protective cover (3) is not pressure-resistant and therefore should not be used
during operation.
7.4.9

Hydraulically connecting the axial piston unit

Insufficient suction pressure!
Generally, a min. permissible suction pressure at port "S" is specified for axial
piston pumps in all installation positions. If the pressure at port S drops below the
specified values, damage may occur which may lead to the axial piston pump being
damaged beyond repair!
▶ Make sure the necessary suction pressure is maintained. This is influenced by:
– The piping (e.g. suction cross-section, pipe diameter, length of suction line)
– The position of the reservoir
– The viscosity of the hydraulic fluid
– A filter element or check valve that may be fitted in the suction line (check the
level of contamination of the filter element regularly)
The machine/system manufacturer is responsible for sizing 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 maximum permissible
pressures p
and 53" on page 39. The machine/system manufacturer should make sure the
connecting elements and lines correspond to the specified application conditions
(pressure, flow, hydraulic fluid, temperature) with the necessary safety factors.
Connect only hydraulic lines that are match the axial piston unit port (pressure
level, size, system of units).
Notices on
Observe the following information when routing the suction, pressure and drain
routing lines
lines.
• Lines and hoses should be installed 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.
• Use suitable seals as sealing material.
• Suction line (pipe or hose)
– The suction line should be as short and straight as possible.
– Measure the line cross-section of the suction line so the pressure at the suction
port does not drop below the min. permissible pressure. Make sure the maximum
suction pressure is not exceeded (e.g. when prefilling).
– Make sure the connections and connecting elements are airtight.
– The hose must be pressure-resistant, also to external air pressure.
RE 92703-01-B/04.2018, A10VO, A10VSO, A10VNO, A10VSNO Series 52 and 53, Bosch Rexroth AG
NOTICE
, see Table 11 "Ports A10VO, A10VSO, A10VNO, A10VSNO Series 52
max
Installation 35/60