Shuttle SE 20T Drive Pulley - Hirobo HI0402593  [HI0402593]

Pulley Specifications and Fit for Shuttle SE

The Hirobo HI0402593 drive pulley is supplied as a replacement component for Shuttle SE helicopter drivetrain assemblies. The 20T specification identifies the tooth count, which is the key parameter for determining gear ratio and mesh, not a material classification.

When fitting the pulley, ensure gear mesh and bearing condition on the Shuttle SE are correct and that the shaft runs true. Follow a careful routine: remove the old pulley, check mating gears and bearings for wear, align and install the new pulley, and confirm free, wobble-free rotation before testing under power.

Use this pulley as part of scheduled servicing or when correcting drive precision after extended operation. Maintaining accurate mesh tolerances between the pulley and its mating gears reduces drivetrain vibration and prolongs component life.