Specifications

Document No. DER05024 MAIN BEARING REPLACEMENT
Page 2 of 5 Effective Date 28 Mar 08
Bearing Removal (Cont’d)
6. Loosen nuts securing bowl drive motor to base, turn tensioning bolt to release tension, and
remove belts from bowl sheave.
7. Remove bolts, flat washers, and lockwashers securing pillow blocks to base at liquid and solid
ends.
8. Disconnect leads to liquid and solid end temperature sensors and speed sensor at junction
box on centrifuge base.
9. The rotating assembly weighs about 3000 pounds (1400 kg). Select a suitable hoist capable
of lifting at least 3500 lbs (1600 kg) to rotating assembly, and lift rotating assembly until clear
of base.
10. Lower rotating assembly onto a cradle that is capable of supporting its weight.
11. Remove screws securing upper and lower halves of pillow block together, and support lower
half while prying between parts to separate and remove pillow block halves from bearing.
12. Remove screws securing sheave to bowl flange, and remove sheave.
13. Remove screws securing input flange to gearbox housing, and remove flange.
14. Loosen set screw securing shell (Figure 5024-1) to conveyor drive gearbox shaft, and remove
O-ring, shell, grease adjuster, and spacer ring from gearbox shaft.
15. Using a suitable puller, remove solid end bearing from gearbox shaft.
Figure 5024-1 Solid End Bearing Detail