Leroy-Somer — Reconditioning the bearings
Maintenance
From a Leroy-Somer service manual — check it applies to your exact model before use.
Before you start
- Too much grease causes the bearing to overheat
- The new grease must be recently manufactured, of equivalent performance and free of impurities
Procedure
- Bearings without nipples: dismantle the motor, remove old grease and clean bearings and accessories with degreasing agent.
- Fill with new grease to 50% of the free space.
- Bearings with nipples: always begin by cleaning the waste grease channel.
- Remove the covers and clean the grease nipple heads.
- If a different grease is used, dismantle the motor and clean bearings, accessories and grease pipes with degreasing agent.
- Fill the inner free spaces of the bearing retainers, flanges and grease pipes and 30% of the bearing free space.
- Rotate the motor shaft to distribute the grease.
Tools required
- Degreasing agent Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- New grease amount: 50% of free space (bearings without nipples)
- Bearings with nipples: fill inner free spaces plus 30% of bearing free space
Source: Leroy-Somer service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.