NORD Drivesystems B2000 - Manual (Page 22)

3. Storage, preparation,
installation
-22- B2000-GB-0413 www.nord.com
3. Slide the shrink disc onto the hollow shaft until the outer clamping flange is flush with the
hollow shaft. The shrink disc is easier to slide on if the bore of the inner ring is lightly
greased.
4. Prior to mounting, grease the solid shaft only in the area which will later come into contact
with the bronze bush in the hollow shaft of the gear unit. Do not grease the bronze bush, in
order to prevent grease penetrating the area around the shrink connection.
5. The hollow shaft of the gear unit must be completely de-greased and c o m p l e t e l y
f r e e o f g r e a s e .
6. In the area of the shrink connection the solid shaft of the machine must be degreased and
c o m p l e t e l y f r e e o f g r e a s e .
7. Insert the solid shaft of the machine into the hollow shaft so as to completely fill the area
around the shrink connection.
8. Position the clamping flange by gently tightening the bolts.
9. Tighten the bolts successively in a clockwise direction by several turns – not crosswise –
with approx. ¼ rotation per turn. Tighten the bolts with a torque wrench to the torque
indicated on the shrink disc.
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.
11. The hollow shaft of the gear unit and the solid shaft of the machine should be marked with a
line (felt-tip pen) in order to detect any slippage under load.
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.
If a shrink disk has been in use for a long period or is dirty, it must be dismantled, cleaned and
the conical surfaces coated with Molykote G Rapid Plus or a similar lubricant before it is refitted.
The treads and head surfaces of the screws must be treated with grease without Molykote. In
case of damage or corrosion, damaged components must be replaced.
3.11 Fitting the covers
Danger!
Risk of injury from incorrect mounting and dismantling.
Danger!
Shrink disks require protection against contact. Covers (Option H) serve as contact
protection. These must always be used if contact protection is not provided by other
methods.