Leroy-Somer — Coupling - Preparation and balancing
Installation
From a Leroy-Somer service manual — check it applies to your exact model before use.
Before you start
- Inertia flywheels must not be mounted directly onto the shaft extension
- Use a special lubricant (e.g. molykote grease) for fitting the coupling
Procedure
- Turn the motor by hand before coupling to detect any fault due to handling.
- Remove any protection from the shaft extension.
- Drain off any condensation water which may have formed inside the motor.
- Remove the rotor locking device for made-to-order motors with roller bearings.
- Balance the coupling element according to the shaft marking (H = half-key standard, N = no key, F = full key).
- Ensure the hub is fully in contact with the shaft shoulder or stop ring and longer than the shaft extension (2 to 3 mm).
Tools required
- Spanner Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Hub longer than the shaft extension by 2 to 3 mm
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.