34/56 Installation
Bosch Rexroth AG, A22VG Series 40, RE 93221-01-B/07.2013
t Drain line
– Always route the reservoir lines so that the case is constantly filled with hydraulic
fluid and to ensure that no air gets through the shaft seal even during extended
standstill periods.
– The case pressure must not exceed the limit values listed for the axial piston unit
in the data sheet under any operating conditions.
– The reservoir line joint in the reservoir must always be below the minimum fluid
level under all conditions (see chapter 7.3 “Installation position” on page 26).
t If the axial piston unit is equipped with installed screw fittings, these must not be
unscrewed. Screw the threaded plug of the fitting directly into the installed screw
fitting.
Axial piston units are employed in regions using the metric measuring system, in
regions using the Anglo-American (imperial) measuring system and in regions using
the Japanese measuring system (JIS –
Japan Industrial Standard). Moreover, various
kinds of seal are used.
The system of units, the kind of seal and the size of female thread and threaded
plugs (e.g. locking screw) must all match.
Due to the limited options for visually detecting differences, there is a risk of
mix-ups.
WARNING! Leaky or popped-out threaded plugs!
If a threaded plug which is of a different measurement system, kind of seal and size
with respect to the female thread is pressurized, the threaded plug may loosen itself
or even be ejected from the hole in a projectile-like manner. This can result in serious
injury and damage to equipment. Hydraulic fluid can be discharged from this leakage
point.
▶ Use the drawings (installation drawing) to determine the required threaded plug
for each fitting.
▶ Make certain that there are no mix-ups when installing fittings, mounting bolts
and threaded plugs.
▶ For all female threads, use a threaded plug from the same system of units and of
the correct size.
Risk of mix-ups with
threaded connections
To Next Page
Loading...