Program Information Mobile Hydraulics, Mobile ... - Bosch Rexroth AG

60 Mobile Controls
4
Hydrostatic Steering Units LAG
Steering Unit LAG
- LAG steering units are used in
the hydraulic steering circuits of
motor vehicles and mobile machines
with high axle loads and
driving speeds of up to 50 km/h
(60 km/h in Germany).
- Even heavy vehicles can be easily
steered. The absence of a mechanical
connection between the
steering unit and the steering axle
allows the implementation of
solutions that would not be feasible
with conventional steering
systems.
- Includes all valves that are required
in the hydraulic steering
circuit for the protection of the
steering unit and cylinder. No
need for additional piping.
- If the oil supply fails, the LAG
can be used to steer manually
– emergency steering capability.
The LAG then functions as a
handpump to the steering cylinder.
LAGC and LAGL
Steering units with constant flow
in normal (servo) and limp home
mode
LAGU and LAGZ
Steering units with automatic flow
reduction for reducing the actuating
force in the event of failure of
the oil supply. Quite often, this is
sufficient for maintaining the limit
values for manual steering. In
many cases, it is possible to forego
a second oil supply for the event of
an emergency.
LAGU
LAGU steering units work according
to the chamber isolation principle.
In limp home mode, the displacement
is reduced by one half.
The installation dimensions are
identical with those of the same
size LAGC.
LAGZ
LAGZ steering units have two rotor
sets which function in normal (servo)
operation.
In limp home mode, the oil transport
of a rotor set switches off. The
actuating force is reduced in the
same ratio as the displacement.
Detailed information:
LAGC RE 14365
LAGL RE 11872
LAGU RE 11867
LAGZ RE 11868
Size LAGC 40 50 63 70 80 100 125 160 200 250 320 400 - - - -
LAGL - - - - - - - - - - - - 500 630 800 1000
LAGU - - - - - - 125 160 200 250 320 - - - - -
LAGZ - - - - - - - 160 200 250 320 400 500 - - -
Variants LS = Load sensing-non reaction or reaction
Flow qV 50 l/min (LAGL = 80 l/min)
Operating
pressure
pmax 175 bar