KEB's COMBINORM brake product is a power-on brake.
The COMBINORM provides an economical option
for braking that can be configured in flange
or shaft-mount configurations.
The brake consists of a stationary electromagnet.
Also, an armature is riveted to a flat spring
which is then rivted to a shaft hub.
The hub is connected to the machine shaft
with a keyed connection.
Here's how the KEB COMBINORM brake works.
When electrical power is applied to an electromagnet
coil a magnetic field is created.
The magnetic force is strong enough to deflect
the flat spring and pull the armature across
a small air gap into the magnet face.
The friction connection between the magnet
and armature causes the rotating shaft to
slow and stop.
When power is removed from the magnet, the
flat spring pulls the armature across the
air gap and away from the magnet face.
With an air gap between the magnet and armature
the shaft is free to rotate without any residual drag.
