Product description
INTORQ | BA 14.0215 | 07/2019
12
3.2.1
Basic module
Fig. 1:
Design of a BFK455-25 spring-applied brake
A
Tappet
B
Armature plate
C
Complete rotor
D
Flange
E
Gear teeth
F
Compression springs
G
Coil
3.3
Function
This brake is an electrically releasable spring-applied brake with two rotating brake discs (rotors) that are
equipped on both sides with friction linings. In its de-energized state, the rotor is clamped with braking
force applied by pressure springs between the armature plate and a counter friction surface. This corres-
ponds to a fail-safe functionality.
The brake torque applied to the rotor is transferred to the input shaft via a hub that has axial gear teeth.
The brake can be used as a holding brake, as an operating brake, and as an emergency stop brake for
high speeds.
The asbestos-free friction linings ensure a safe braking torque and low wear.
