Check and adjust air gap
DANGER!
Risk of injury due to rotary parts.
▶
The motor must not be running when checking the air gap.
Spring-applied brake ABR IP65/66
Spring-applied brake HBR IP54/55
Spring-applied brake ABR IP54/55
5
1
2
3
4
sL
1
Stator
4
Sleeve bolt with hexagon
2
Armature plate
5
Sealing plug
3
Cheese head screw
s
L
Air gap
How to check the air gap:
1
.
Do not energize the brake.
2
.
For brake ABR IP65/66: Lever out the sealing plug (5) on the circumference of the brake
and check the air gap s
L
through the bore. After checking, push the sealing plug back in,
taking care not to tilt the plug.
3
.
Measure the air gap s
L
between stator (1) and armature plate (2) in the vicinity of the cap
screws (3) using a surface feeler gauge.
4
.
Compare the air gap with the value for the maximum permissible air gap s
L,max
.
5
.
Set air gap to s
L,N
.
How to set the air gap on the ABR IP54/55 brake
1
.
Loosen cheese head screws (3) with an Allen key.
2
.
Screw the sleeve bolts (4) further into the stator (1) using an open-end wrench.
1/6 revolution reduces the air gap by approx. 0.15 mm.
3
.
Tighten the cheese head screws (10) to the prescribed torque.
Maintenance
Maintenance work
37
