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Installation
1
h
t min
h
min
T
1
Fig. 6: A2FM below-reservoir installation with installation positions 1–4
Bosch Rexroth AG, A2FM/A2FE/A2FMT Series 70, RE 91071-01-B/06.2018
▶
Avoid using a check valve in the drain line.
Exception: above-reservoir installation, drive shaft up.
A check valve in the drain line (cracking pressure 0.5 bar) can prevent the system
from draining through the drain line. Please note the correct flow direction.
▶
To keep noise levels low, use elastic elements to isolate all connecting lines from
all vibration-capable components (e.g. reservoir).
▶
Make sure that the drain line and return line flow into the reservoir below the
min. fluid level in all operating conditions. This prevents foaming.
▶
Make sure that the working environment at the installation site is completely
free of dust and foreign substances. The axial piston unit should be clean when
installed. Contamination of the hydraulic fluid can considerably affect the
function and service life of the axial piston unit.
▶
Use fiber-free cloths for cleaning.
▶
Use suitable, mild cleaning agents to remove lubricants and other heavy
contamination. Do not allow cleaning agents to enter into the hydraulic system.
7.3 Installation position
The axial piston unit can be installed in the following positions. The pipeline routing
shown illustrates the basic layout.
7.3.1 Below-reservoir installation (standard)
Below-reservoir installation means that the axial piston unit is installed outside of
the reservoir and below the min. fluid level of the reservoir.
Recommended installation position: 1 and 2.
Also be sure to bleed air through air bleed port R when installing with the drive
shaft up (special version).
Do not install the A2FE and A2FMT with the drive shaft up.
2
h
t min
h
min
T
2
T
, T
Highest drain port
1
2
h
Min. required immersion depth (200 mm)
t min
3
h
t min
h
min
T
1
h
Min. required distance to reservoir
min
bottom (100 mm)
4
h
t min
h
min
R
T
2
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