Slurry Pump
WH202A1B011EN_01D.DOC JAN 04-W08
Care and maintenance
1/5
9.5.5 Shaft and bearings - disassembly and re-assembly
1. General
The bearing assembly consists of a steel shaft onto the end of which the impeller is
screwed. The other end of the shaft is keyed to accept a coupling or belt drive
arrangement.
Heavy-duty, tapered roller bearings are used in various configurations as illustrated
schematically below:
G
S
G
S
Standard bearing assembly
G
S
G
S
Double dry-end bearing assembly for high belt loads
G
S
G
S
Double wet-end bearing assembly for high impeller loads
A lipseal backed by a V-ring (S), seals the bearings against dirt and other foreign matter.
Grease nipples (G) are fitted to allow periodic bearing lubrication. Grease is purged
through the bearing to remove any contamination.
The bearing assembly is secured in the bearing frame by a housing clamp, saddle block,
and adjusting screw. On larger size pumps, two housing clamps and two saddle blocks
with adjusting screws are used to adjust the shaft assembly axially.
The central portion of the bearing housing is colour coded to allow the assembly type to be
ascertained from the exterior. The band is visible, when the cover plate (P24) is taken off
the bearing frame (P14). Table 9.5.5-1 explains the coding.
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