Page 8 - BPW ECO Disc service guide

SB KNORR BREMSE DISC BRAKE RANGE

SB KNORR DISC BRAKE SIZES
SB 3745 SB 3745T SB 4309T
SB Disc brake SB Disc brake SB Disc brake
37 Disc Ø 377mm 37 Disc Ø 377mm 43 Disc Ø 430mm
45 Disc thickness 45mm 45 Disc thickness 45mm 09 Standard axle load 9t
Axially mounted caliper T Tangentially mounted caliper T Tangentially mounted caliper

BPW AXLES EQUIPPED WITH SB KNORR BREMSE DISC BRAKES
BPW Axle code Date range BPW Axle type SB Brake size Rotor diameter
SH9010
Up to Feb 2004 9 tonne ECO SB 3745 377mm
SKH9008
SKH9008 SB 3745T suit 19.5” tyres 377mm
Feb 2004 to Aug 2008 9 tonne ECO Plus
SH9010 SB 4309T suit 20” tyres 430mm
SKH10108 SB 3745T suit 19.5” tyres 377mm
From Aug 2008 10-12 tonne ECO Plus
SH10110 SB 4309T suit 20” tyres 430mm

SB KNORR BREMSE DISC BRAKE OPERATING PRINCIPLE

When the brake pedal is pressed, the push rod (1) of
the brake cylinder presses against the lever (2) of the
brake caliper.

The roller (3) mounted eccentrically in the brake trans-
fers the force onto the bridge (4). The clamping force
acts on the internal brake pad (6) via the threaded
tubes and the tappets (5). As a result, the brake pad
(6) is forced against the brake disc (7).

The reaction force which now arises on the caliper (8)
is transferred to the opposite brake pad by means of
the sliding caliper, so that the opposite pad (6) is also
pressed against the brake disc with the same force.

When the brake pressure is reduced, the spring force
returns the bridge (4), the threaded tubes (5) and
lever (2) to their original position.

Numbers in brackets above refer to figure numbers on drawing above.

8 SB Knorr Bremse Disc Brake Parts Catalogue 01/2017