RE 91001-01-X-B2/01.2016,
Bosch Rexroth AG
Axial piston fixed motor |
A2FM for explosive areas
Shaft seal
5
Shaft seal
Permissible pressure loading
The service life of the shaft seal is influenced by the speed
of the axial piston unit and the case drain pressure.
The mean differential pressure of 2 bar between the case
and the ambient pressure may not be enduringly exceeded
at normal operating temperature. Momentary (
t
< 0.1 s)
pressure peaks of up to 10 bar are allowed. The service life
of the shaft seal decreases with increasing frequency of
pressure peaks and increasing mean differential pressure.
The case pressure must be equal to or higher than the
ambient pressure.
These values are valid for ambient pressure
p
abs
= 1 bar.
The FKM shaft seal ring may be used for leakage tempera‑
tures from ‑25 °C to +90 °C.
Flow direction
Direction of rotation, viewed on drive shaft
clockwise
counter‑clockwise
A
to
B
B
to
A
Speed range
No limit to minimum speed
n
min
. If uniformity of motion
is required, speed
n
min
must not be less than 50 rpm.
For the maximum speed, see Technical data on page 7.
