INTORQ BFK458 - Maintenance and Repair; Checking the Components; Check the Rotor Thickness

Maintenance and repair
INTORQ | BA 14.0168 | 11/2018 64
8.3.1 Checking the components
With mounted brake
¾
Check release function and con-
trol
Refer to Release / voltage,Page65
¾
Measure the air gap (adjust if re-
quired)
Refer to Adjusting the air
gap,Page66
¾
Measure the rotor thickness (re-
place rotor if required)
Refer to Check the rotor thick-
ness,Page64
¾
Thermal damage of armature
plate or flange (dark-blue tarnish-
ing)
After removing the brake
¾
Check the play of the rotor gear
teeth (replace worn-out rotors)
Refer to Replace rotor,Page66
¾
Check for breaking out of the
torque support at the guide parts
and the armature plate
¾
Check the springs for damage
¾
Check the armature plate and
flange or end shield
– Flatness depending on the
size
Refer to the table Design of end
shield and shaft,Page35
– Max. run-in depth = rated air
gap for the size
Refer to the table Rated data for air
gap specifications,Page23
8.3.2 Check the rotor thickness
DANGER
Danger: rotating parts!
The motor must not be running when checking the rotor thickness.
1. Remove the fan cover.
2. Remove the cover ring, when present.
3. Measure the rotor thickness using a calliper gauge. For the friction-plate design: observe the edging
on outer diameter of friction plate.
4. Compare the measured rotor thickness with the minimum permissible rotor thickness. (Refer to the val-
ues in the table Rated data for air gap specifications
,Page23.) If the measured rotor thickness is in-
sufficient, the rotor must be replaced completely. (Refer to Replace rotor
,Page66 for the descrip-
tion.)