NORD Drivesystems B2050 - Manual (Page 17)

3. Assembly instruction,
storage, transport, preparation, installation
www.nord.com B2050-GB-0613 -17-
Danger!
Care must be taken that drive and driven elements attached to the gear unit must also
be ATEX-compliant.
Drive and driven elements may apply to the gear unit only the maximum permitted radial
and lateral forces FR1 and FR2 and axial forces FA1 and FA2 indicated on the name plate
(see Section 3.4). Observe the correct tension, particularly on belts and chains. Additional loads
due to unbalanced hubs are not permitted.
Danger!
The radial force must be applied to the gear unit as closely as possible. For drive shafts
with free shaft ends the maximum permissible transverse force FR1 applies for the
application of the transverse force to the centre of the free shaft journal. For driven
shafts, the application of the transverse force FR2 must not exceed the dimension xR2.
If the transverse force FR2 for the driven shaft is stated on the name plate, but no
dimension xR2 is stated, the application of the force is assumed to be to the centre of
the shaft journal.
Figure 3-7: Permitted force applied to drive and driven shaft
3.10 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 facilitated by applying an anti-corrosive lubricant to the
shaft and the hub before fitting (e.g. Nord Anti-Corrosion Art.-No. 089 00099). Excess grease or
anti-corrosion agent may escape after assembly and may drip off. Clean these points on the
output shaft after a running-in time of approx. 24 hours. This escape of grease is not due to a
leak in the gear unit.