Page 10 - Catalog spare parts BPW EL-TS2

Auto Parts / Page 10 BPW-EL-TS2/TSB 31231902e
2 Steering axle, steering stabiliser

General

BPW steering axles, LL series
No one wants tyres that lose rubber every time they turn
a corner. We have therefore developed an axle which
allows your wheels to roll instead of slide.
The BPW-Tag axle LL.
The enormous advantages of the steering axle come
to the fore when manoeuvring: Better manoeuvrability,
reduced wear on all tyres and less fuel consumption.

For delivery and distribution traf c, primarily in dense
conurbations and cities, the BPW-Tag axle is therefore
the right economic solution.

How it works
LL stands for load-dependent steering stabilisation
and it describes the unique, patented functional principle
of the BPW-Tag axle.

Conventional steering axle designs require steering sta-
bilisers powered from an external source - this is not
the case with the BPW-Tag axle. The axle beam and
axle stub are connected to undulating thrust bearings
via steering pivots.
When driving straight ahead (0 position), the undulations
in the thrust washers keep the wheels on track. The ve-
hicle weight presses the shaft contours of the upper and
lower thrust washers together. The wheels remain stable
in the correct straight-ahead position.
If the semi-trailer follows the tractor unit into a curve,
the caster ensures that the wheels turn in accordance
with the curve radius (the thrust washers slide over each
other).
The frictional resistance changes depending on the load
on the axle. As a result, a steering angle (8° to 27°, de-
pending on the axle type) is achieved according to the
load, and is entirely controlled by mechanical means.
The drag link connecting the wheels uses a steering lock
to prevent the wheels from steering when the vehicle is
reversing.

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