Fitting With Integrated Du Bush; Axial Fastening; Demounting The Shaft­mounted Gear Unit - Siemens FLENDER B3 E Series Assembly And Operating Instructions Manual

6.6.1.1 Fitting with integrated DU bush

Fit the gear unit by means of nut and threaded spindle. The counterforce is provided by the end plate
in the hollow shaft.
The hollow shaft must be exactly aligned with the machine shaft to avoid canting.
Draw the gear unit with the hollow shaft until the seat under the shrink disk onto the machine shaft.
The machine shaft is then centered in the seat under the shrink disk and in the DU bush.
Draw the hollow shaft against the collar of the machine shaft.
In order to avoid any distortion, it must be supported by a torque arm or a pedestal
(see items 6.11 and 6.12).
Under no circumstances may the gear unit be stressed.
Fig. 50: Hollow shaft in shrink­disk design, mounting with DU bush
1 Machine shaft
2 Hollow shaft
3 DU bush
Parts 4, 5 and 6 are not included in the delivery.

6.6.1.2 Axial fastening

If the shrink disk is fitted according to instructions (see item 6.7.1), the gear unit is fixed securely in the axial
direction. Additional axial fastening is not required.
6.6.1.3 Demounting the shaft­mounted gear unit
Demount the shrink disk (see item 6.7.2).
Using the forcing screws (part 4) force the gear unit off the machine shaft, until the seat under the shrink
disk and the DU bush are clear.
Using suitable lifting gear, lift the gear unit from the machine shaft.
Use only the eyes provided to attach lifting equipment to the unit.
Do not use the front threads at the shaft ends to attach slinging and lifting gear for
transport.
3 2
4 Forcing­off bolt
5 Threaded spindle
6 Nut
BA 5033 EN 03/2011
61 / 96
1 8 7 6
7 End plate
8 Locking ring
5
4