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An automatic clamping device can lessen the speed variations and vibrations,
and thus avoid subsequential damage.
– When using drives with toothed belts or V-belts, always use an automatic
clamping device.
• On the drive of an axial piston unit, a cardan shaft may cause vibrations
and excessive rotary angular acceleration. Depending on the frequency and
temperature, this may cause leaks in the shaft seal and damage the rotary group.
• 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 case pressure of all
connected units is not exceeded in any operating condition, particularly at
cold start. If this is not possible, separate drain line must be laid, if necessary.
The version of installation for the axial piston unit depends on the connecting
elements to the drive side. The following descriptions explain the installation of
the axial piston unit:
• With a coupling
• On a gearbox
• On a cardan shaft
7�4�4 Installation with a coupling
The following describes how to install the axial piston unit with a coupling:
NOTICE! Danger from improper handling!
Product can be damaged!
▶ Do not install the coupling hub on the drive shaft of the axial piston unit by
striking it.
1� Install the specified coupling half on the drive shaft of the axial piston unit
according to the instructions of the coupling manufacturer.
The drive shaft of the axial piston unit is equipped with a female thread.
Use this female thread to pull the coupling element onto the drive shaft.
The size of the female thread can be seen in the installation drawing.
2� Make sure that the installation location is clean and free from dirt and foreign
particles.
3� Clamp the coupling hub onto the drive shaft or ensure permanent lubrication
of the drive shaft. This prevents the formation of frictional corrosion and the
associated wear.
4� Transport the axial piston unit to the installation location.
5� Install the coupling on the output shaft of the drive motor in accordance with
the specifications provided by the coupling manufacturer.
Do not fasten down the axial piston unit until the coupling has been correctly
installed.
Assembly | A4VSH series 1x and 30
RE 92110-01-B/2022-03-22, Bosch Rexroth AG
35/64
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