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Installation instructions
General
The axial piston unit must be filled with hydraulic fluid 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.
Especially with the "drive shaft upwards" installation
position and above-reservoir installation, bearing flushing
is required for lubrication of the front bearing and of the
shaft seal at port U. See page 7.
The leakage in the housing area must be directed to the
reservoir via the highest drain port (T, R(L), K
If a shared drain line is used for several units, make sure
that the respective case pressure in each unit is not
exceeded. The shared drain line must be dimensioned
to ensure that the maximum permissible housing pressure
of all connected units is not exceeded in any operating
conditions, particularly at cold start. If this is not possible,
separate drain lines must be laid 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 flow into the reservoir below the minimum fluid
level. The permissible suction height h
total pressure loss. However, it must not be higher than
h
=
800 mm. The minimum suction pressure at port S
S max
must not fall below 0.8 bar absolute during operation
either.
For external boost pressure supply (version K..), please
refer to the attachment pump data sheet for details on the
minimum suction pressure.
When designing the reservoir, ensure that there
is an adequate distance between the suction line and
the drain line. This minimizes oil turbulence and carries out
degassing, which prevents the heated hydraulic fluid from
being sucked directly back in again.
Installation position
See the following examples 1 to 10.
Further installation positions are available upon request.
Recommended installation position: 1.
Notices
▶ You can expect installation positions 3, 4, 8 and 9
, K
).
2
3
results from the
S
Axial piston variable pump | A4CSG Series 30
to affect the control device. Gravity, dead weight and
case pressure can cause minor characteristic shifts
and changes in response time.
RE 92105-01-X-B2/2019.08.06, Bosch Rexroth AG
Installation instructions
47
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