AZ motor
Edition 4
Instructions for bearings replacement
42
Step 24: Installing back rear bearing fixation elements and preload
elements
You will need a TORX T20 screwdriver or tool for M4 screw head (a) or TORX T30
screwdriver or tool for M6 screw head (b), torque wrench (m), heavy duty pliers (d) and
retaining ring pliers (c) for this step.
Table 10: Rear bearing fixation elements and preload elements on motors
AZ 108
AZ 150, AZ 220
AZ 84
Rear bearing
fixation elements
Press ring (pos. 12)
Screw M4x16 (pos. 13)
Press ring (pos. 12)
Screw M6x16 (pos. 13)
Bearing fixation washer (pos.11)
Screw M6x16 (pos. 12)
Preload elements
Wave spring washer (pos. 9)
Shim washer (pos. 10)
Retaining ring (pos. 11)
Wave spring washer (pos. 9)
Distance ring (pos. 10)
RISK OF INJURY BECAUSE OF FLYING OBJECTS.
When installing retaining ring secure it e.g. with your hand because
it can fly away since it is compressed. Safety glasses must be used.
Pay attention to the screw because it can fall inside of the motor. If
this happens, remove the screw from the motor by applying steps
for motor disassembly which are needed to get the screw out. If you
forget to take it out then it is possible that motor will damage when
you power it on.
Screw M4 or M6 has to be secured against the unscrewing with
glue for protection against unscrewing. It is recommended to use
glue Loctite 243.
When screwing the M4 or M6 screw you should hold the motor
shaft because you will not be able to screw since the shaft will
rotate. Protect the shaft e.g. with a cotton cloth or soft metal or
some plastic. Then use e.g. heavy duty pliers, hold the shaft and
screw the screw with torque wrench. Be careful not to damage the
motor shaft.
Be careful not to damage stator winding or motor wires and cable
or motor connector.