Maintenance and repair
INTORQ | BA 14.0217 | 09/2019
75
9.3.5
Adjusting the air gap
DANGER
Danger: rotating parts!
The brake must be free of residual torque.
NOTICE
Please observe when mounting the flange design with additional screws:
Clearing holes for the screws in the end shield must be behind the threaded screw holes
in the flange. Without the clearing holes, the minimal rotor thickness cannot be used. The
screws must not press against the end shield.
1. Loosen the screws (refer to the figure Adjusting the air gap, Page 47 ).
2. Screw the sleeve bolts (using an open-end wrench) further into the stator. A 1/6 turn will decrease the
air gap by approximately 0.15 mm.
3. Tighten the screws. (Refer to table Rated data: screw kit for brake assembly on separately screwed-
on flange, Page 25 for the torque values.)
4. Check the value of s
L
near the screws using a feeler gauge. (Refer to table Rated data for air gap spe-
9.3.6
Replace rotor
DANGER
Danger: rotating parts!
Switch off the voltage. The brake must be free of residual torque.
Your system should be mechanically immobilized in the event that it could start moving
when the brake is released.
1. Remove the connection cables.
2. Loosen the screws evenly and then remove them.
3. Pay attention to the connection cable during this step! Remove the complete stator from the end
shield.
4. Pull the rotor off the hub.
5. Check the hub's gear teeth.
6. Replace the hub if wear is visible.
7. Check the end shield's friction surface. Replace the friction surface on the end shield when there is
clearly visible scoring at the running surface. In case of strong scoring on the end shield, rework the
friction surface.
8. Measure the rotor thickness of the new rotor and the head thickness of the sleeve bolts (use a calliper
gauge).
