RC Shaft Locator 3 x 5 x 11 - Hirobo HI2521112  [HI2521112]

Compatibility and sizing notes

The HI2521112 collar from Hirobo, sized 3 x 5 x 11, is a compact locating and retaining collar for rotating shafts used in small RC assemblies. It provides a simple clamp or stop point, helping to secure parts in place without changing main components.

Its principal purpose is positional control: maintaining shaft location, restricting axial play, and assisting in alignment for small gear stacks or bearing seats. Installers should compare the collar's bore and axial length with the intended shaft and surrounding parts to confirm compatibility prior to permanent installation.

Fitting procedure: slide the collar onto the shaft to the chosen position, ensure mating parts line up, and then tighten the set screw or clamping mechanism. After fitting, rotate the assembly to confirm there is no interference and that the collar holds the desired position.