Assembly
5.3 Gear unit assembly
A5850-02en Edition 06/2022 65
5.3.6.2.2 Mounting with DU bushing as a separate component5.3 Gear unit assembly
Procedure
NOTICE
Damage to the gear unit
The gear unit can become damaged if it skews during assembly.
The hollow shaft must be flush with the machine shaft during assembly of the gear unit on
the machine shaft. Do not allow the gear unit to skew.
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 a DU bushing as a separate component:
1. Use suitable hoisting gear to lift the gear unit.
2. Push the separately supplied DU bushing onto the machine shaft.
3. Use a ratchet tie to tighten the DU bushing until it makes secure contact with the shaft.
4. Move the DU bushing together with the machine shaft into the hollow shaft of the gear
unit.
Hydraulic pulling equipment can be used instead of the nut and screw spindle shown in the
diagram.
5.3.6.2.3 Axial locking5.3 Gear unit assembly
Tightening the shrink disk as per specification ensures that the gear unit is properly axially
locked. It is not necessary to install any further axial locking elements.