NORD Drivesystems B2050 - Manual (Page 21)

3. Assembly instruction,
storage, transport, preparation, installation
www.nord.com B2050-GB-0613 -21-
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. If the external ring does not detach from the inner ring after approx. one turn of all screws,
the external ring can be released with the aid of the push-off thread. For this, the required
number of tensioning bolts are uniformly screwed into the push-off thread until the external
ring separates from the internal ring.
3. Remove the gear unit from the solid shaft of the machine.
If a shrink plate is used for a long period or if it is contaminated, it must be dismantled, cleaned
and the conical surface (cone) treated with Molykote G-Rapid Plus or similar lubricant prior to re-
assembly. The treads and head surfaces of the screws must be treated with grease without
Molykote. Any damaged or corroded elements must be replaced.
3.13 Fitting the covers
Danger!
Shrink discs and exposed rotating shaft ends require contact guards in order to
prevent injuries. A cover (Option H) 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 by means of special attached
components.
Danger!
Covers must be inspected for transportation damage e.g. dents and warping before
they are fitted. Damaged covers must not be used, as they may cause rubbing.
All fixing screws must be used and coated prior to use with a securing lubricant e.g. Loctite 242,
Loxeal 54-03 and tightened to the correct torque. (See Chapter 6.4 for torque values)
Danger!
Risk of injury from incorrect mounting and dismantling procedures.