3. Storage, Preparation,
Installation
-12- B1000 www.nord.com
3.5 Fitting hubs on the gear shafts
Attention!
Do not subject the gear unit to harmful axial forces when fitting the hubs.
Drive and driven elements, e.g. coupling and chain-wheel hubs must be mounted onto the drive
and driven shaft of the gear unit using suitable pullers that will not apply damaging axial forces
onto the gear unit. In particular, do not hit the hubs with a hammer.
Use the end thread of the shafts for pulling. Fitting can be aided by coating the hub with lubricant
or heating it up to approx. 100
o
C beforehand.
Figure 3-3:
Example of a simple pulling device
Danger!
Drive and driven elements, such as belt drives, chain drives and couplings must be fitted
with contact protection.
Drive and driven elements may only subject the drive units to the maximum radial forces
F
R1
and F
R
and axial forces F
A1
and F
A
as specified in the catalogue. Observe the correct
tension, particularly on belts and chains. Additional loads due to unbalanced hubs are not
permitted. The radial force must be applied to the gear unit as closely as possible.
3.6 Fitting push-on gear units
Attention!
The bearings, gear wheels, shafts and housing may be damaged by incorrect fitting.
The push-on gear unit must be fitted onto the shaft using a suitable puller, which will not exert
damaging axial forces on the gear unit. In particular, do not hit the gear unit with a hammer.
Assembly and subsequent dismantling is aided by applying an anti-corrosive lubricant to the
shaft before fitting.
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