O.S. Engine OS74004060 Motor Retention Ring for OMA-2810/2815  [OS74004060]

Compact retention for OMA-2810/2815

The OS74004060 security ring from O.S. Engine is made to work with OMA-2810 and OMA-2815 brushless motors. It functions as a small-scale retention component that keeps the motor shaft seated and components aligned under load.

Role in the model: this ring limits end-play and prevents unintended axial shaft travel that can upset pinion alignment and drivetrain behavior during tuning or operation.

Fitting guidance: press the ring into the shaft groove matched to OMA-2810/2815, confirm the shaft turns freely with correct axial position, and include the ring in routine checks when servicing gears or bearings.