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 features
one of the following:
● Torque arm
● Supported by gear unit swing base
Proceed as follows to install the gear unit:
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 supported by the hollow shaft.
The diagram below shows the mounting process with screw spindle for gear units with a hollow
shaft and parallel keyway:
① Bolts ⑤ Nut
② Hollow shaft ⑥ Screw spindle
③ Parallel key ⑦ Nut
④ Machine shaft ⑧ Fixture
Figure 5-7 Screw spindle for gear units with hollow shaft and parallel keyway
Special aspects of shaft-mounted gear units with hollow shaft and parallel keyway
Hydraulic pulling equipment can be used instead of the nut and screw spindle shown in the
diagram.
Mounting
5.4 Shaft-mounted gear unit with hollow shaft and parallel keyway
REDUREX Gear unit 5200en
Operating Instructions 03/2019 65
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