Adjust The Air Gap Of The Brake - HANGCHA Mini Range CDD12-A2MJ-SZ Operation And Maintenance Manual

1.5.4 Adjust the Air Gap of the Brake

Rated air gap Z grows with the friction. In order to there is sufficient braking torque, the air gap
must be set before it reaches to the maximum value. The air gap can be adjusted by several times.
When the thickness of brake pad becomes the minimum value(see the specification table below),
the brake pad must be replaced.
Once the air gap reaches the top value, the brake might not be released and the brake pad would
be burn out. It will also cause the decrease of braking force and the retention and the noise
increase and even big accidents. It is prominent to do the periodical inspection and adjust the air
gap. Disconnect the power. Through adjusting 3 hollow bolts (8) and the mounting bolts of stator
(9), set the air gap between stator (1) and armature (2) to the rated Z by a feeler gauge.Ensure air
gap at all directions are same.
Rated Rated
Torque Power
8 N.m 25 W
On the condition of power disconnected, through adjusting 3 mounting bolts of brake (1) and the
hollow bolts (7), set the air gap between stator (11) and armature (8) to the rated Z by a feeler
gauge. Ensure air gap at all directions are same.
Set the air gap in the following sequence:
–
Unscrew the mounting bolts of brake (1) with a hex wrench.
– Adjust the hollow bolts (7) with a spanner.
– Screw up the three mounting bolts of brake (1).
–
Check if the air gap Z is within the standard range with a feeler gauge.
– Adjust the mounting bolts and hollow bolts respectively according to the following figures. Set
the air gap and screw up the mounting bolts of brake.
Specification Table
Rated Air Maximum
Gap Air Gap
0.2mm 0.5 mm
-
7
+
1
59
Minimum
Thickness of Rotor
6.4 mm
Pre-tension Torque of
the Mounting Bolt
5.5 N.m