3. Storage, Preparation,
Installation
-16- B1000 www.nord.com
10. When the tensioning bolts have been tightened, there must be an even gap between the
clamping flanges. If this is not the case, the gear unit must be dismantled and the shrink disc
connection checked for correct fit.
Danger!
Risk of injury from incorrect mounting and dismantling of the shrink disc.
Dismantling sequence:
1. Loosen the bolts successively in a clockwise direction by several turns with approx. ¼
rotation per turn. Do not remove the bolts from their thread.
2. Loosen the clamping flanges from the cone of the inner ring.
3. Remove the gear unit from the solid shaft of the machine.
3.8 Fitting the covers
Danger!
Shrink discs and exposed rotating shaft ends require contact guards in order to prevent
injuries. A cover (Option H and Option H66) can be used as a guard. If this does not achieve
sufficient protection against contact according to the required protection type, the machinery
and plant constructor must ensure this be means of special attached components.
All fixing screws must be used and tightened to the correct torque. (See Section 6.2 for torque
values) With Option H66 covers, lightly press in the cover cap by means of light hammer blows.
Figure 3-11:
Fitting the covers, Option SH, Option H, and Option H66
3.9 Fitting a standard motor
The maximum permitted motor weights indicated in the table below must not be exceeded:
Maximum permitted motor weights
IEC motor size 63 71 80 90 100 112 132 160 180 200 225 250 280 315
NEMA Motor size 56C 143T 145T 182T 184T 210T 250T 280T 324T 326T 365T
Max. motor weight [kg] 25 30 40 50 60 80 100 200 250 350 500 700 1000 1500
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