Assembly
5.3 Gear unit assembly
64 Edition 06/2022 A5850-02en
NOTICE
Damage to the rolling-contact bearings
The rolling-contact bearings can become damaged if the gear unit skews during mounting.
The hollow shaft may be mounted on a machine shaft shoulder only if the gear unit fea-
tures one of the following:
• Torque arm
• Elastic pedestal
• Supported by gear unit swing base
Proceed as follows to mount the gear unit with hollow shaft and shrink disk onto the driven
machine shaft with integrated DU bushing:
1. Use suitable hoisting gear to lift the gear unit.
2. Mount the gear unit using the nut and screw spindle.
The gear unit is braced by the end plate in the hollow shaft.
3. Pull on the gear unit with hollow shaft up to the seat below the shrink disk on the ma-
chine shaft.
The machine shaft centres itself in the seat below the shrink disk and in the DU bushing.
4. Mount the hollow shaft against the machine shaft collar:
The following diagram shows the preparation for gear units with hollow shaft and shrink disk:
Figure5-9:Mounting with a screw spindle
① End plate ④ Nut
② DU bushing ⑤ Hollow shaft
③ Machine shaft ⑥ Screw spindle
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