3 x 8 x 3 Locating Collar HI2521129 for Helicopter Parts by Hirobo  [HI2521129]

Durability and Fit

The Hirobo HI2521129 collar is a compact RC-scale part sized 3 x 8 x 3, built to locate components within helicopter assemblies and maintain axial spacing on small shafts. It is a positional sleeve that supports accurate link geometry rather than absorbing heavy radial or axial loads.

Fitting is simple: slide the collar onto the shaft and align with the required position, then secure surrounding components according to your helicopter's assembly notes. Because it is not a bearing, ensure the collar does not bear excessive load by confirming proper alignment with mating shafts and bushings.

To extend service life inspect the collar regularly for cracks, wear or looseness after flights or impacts. Replace at the first sign of deformation to avoid degraded control response or inconsistent rotor behaviour.