Installation
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RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation
7 Installation
Prior to installation, the following documents must be ready at hand:
•
Installation drawing for axial piston unit (can be obtained from your responsible
contact person at Bosch Rexroth)
•
Hydraulic schematic for the axial piston unit (in the installation drawing)
•
Hydraulic schematic for the machine/system (available from the machine/system
manufacturer)
•
Order confirmation (contains the order-related technical data for your axial
piston unit)
•
Data sheet of the axial piston unit (contains the permissible values of technical
data)
7.1
Unpacking
The axial piston unit is delivered in a corrosion protection film made of
polyethylene material (PE).
CAUTION!
Danger from parts falling out!
If the packaging is not opened correctly, parts may fall out and damage the parts
or even cause injuries!
▶
Place the packaging on a flat and solid surface.
▶
Only open the packaging from the top.
▶
Remove the packaging from the axial piston unit.
▶
Check the axial piston unit for transport damage and completeness, see chapter
4
“Scope of supply” on page 17
.
▶
Dispose of the packaging according to the environmental regulations of your
country.
7.2 Installation conditions
The installation location and position of the axial piston unit essentially determine
the procedures during installation and commissioning (such as when filling and air
bleeding the axial piston unit).
▶
Fix the axial piston unit so that the expected forces and torques can be
transferred without any danger. The machine/system manufacturer is
responsible for dimensioning the fasteners.
The variable double pump A21VG is permissible without additional supports,
providing a maximum dynamic mass acceleration of 10
g
(= 98.1 m/s
2
) is not
exceeded. If an additional pump is to be fitted to the A21VG, the mounting
flange must be calculated for the permissible moment of inertia.
▶
Observe the permissible radial forces on the drive shaft when transferring
output drive with radial force loading (belt drives). If necessary, the belt pulley
must be separately mounted.
▶
Make sure that the axial piston unit is air bled and filled with hydraulic fluid
during commissioning and operation. This is also to be observed following
relatively long standstill periods as the axial piston unit may empty via the
hydraulic lines.
