User's Manual

6
Description of Operation
Description of Operation
Actuation/Release of the Brake
On braking, the lever is actuated by the brake chamber. The
external and internal radii of the inner part of the lever do not
have a common center, which means that the crossbar is moved
axially in the direction of the brake disc. The force is transferred
from the crossbar via adjustment screws and thrust plates to the
inner pad. When the pad comes into contact with the brake disc,
the caliper is moved on slide pins so that the outer pad also
comes into contact with the brake disc.
When the brake is released, the return spring forces the
crossbar back into its rest position, so that the design clearance
between pad and brake disc is achieved.
Self-Adjusting Adjustment
The brake operates according to the clearance principle. The
brake sequence is divided into three phases: Design Clearance
- C, Excess Clearance - Ce (which is to be adjusted out), and
Elasticity - E.
The housing of the adjuster is held in position against the
internal radius of the lever by a guide pin. The adjuster housing
consequently follows the movement of the lever. The rotational
motion is transferred from housing to adjustment spring which in
turn, after passing the design clearance, transmits the motion of
the companion sleeve, friction spring and hub.
1 – Guide pin 4 – Friction spring
2 – Adjustment spring 5 – Hub
3 – Companion Sleeve 6 – Adjuster housing
1 – Caliper 6 – Return spring
2 – Outer pad 7 – Crossbar
3 – Brake disc 8 – Lever
4 – Inner pad 9 – Brake chamber
5 – Thrust plates
1234
56 7 8
9
E
C
e
C
3/3
2/3
1/3