
Operating Instructions – AC Motors DR / DV / DT / DTE / DVE / Asynchrounos Servo Motors CT / CV
47
8
Inspection / maintenance for BMG05-8, BM15-62 brakes
Inspection / Maintenance
Changing the BMG05-8, BM15-62 brake discs
When fitting a new brake disk (in BMG05-4
≤
9 mm; in BMG62
≤
10 mm) inspect the
other removed parts as well and install new ones if necessary.
1. Isolate the motor and brake from the supply, safeguarding them against
unintentional power-up!
2. Remove the following:
– If installed, forced cooling fan, tacho/encoder (
→
Sec. "Preliminary work for motor
and brake maintenance")
– Flange or fan guard [21], circlip [20] and fan [19].
3. Remove the rubber sealing collar [5] and the manual brake release:
– Setting nuts [18], conical coil springs [17], studs [16], release lever [15], dowel pin
[14]
4. Unscrew hexagon nuts [10e], carefully pull off the coil body [12] (brake cable!) and
take out the brake springs [11].
5. Remove the damping cable [9], pressure plate [8] and brake disc [7], [7b], clean the
brake components
6. Install a new brake disk
7. Re-install the brake components
– Except for the rubber sealing collar, fan and fan guard, set the working air gap (
→
Sec. "Inspecting brake BMG 05-8, BM 30-62, setting the working air gap", points
5 to 8)
8. With manual brake release: Use setting nuts to set the floating clearance "s" between
the conical coil springs (pressed flat) and the setting nuts (
→
following figure)
Important: The floating clearance "s" is necessary so that the pressure plate
can move up as the brake lining wears. Otherwise, reliable braking is not
guaranteed.
9. Install the rubber sealing collar back in place and re-install the dismantled parts.
Notes
•
The lockable manual brake release (type HF) is already released if resistance is
encountered when operating the grub screw.
•
The self-reengaging manual brake release (type HR) can be operated with normal
hand pressure.
Important: In brake motors with self-reengaging manual brake release, the
manual brake release lever must be removed after startup/maintenance! A
bracket is provided for storing the lever on the outside of the motor.
01111BXX
Brake
Floating clearance s [mm]
BMG05-1
1.5
BMG2-8
2
BM15-62
2
s