Hirobo HI2521060 Replacement Shaft Collar 2 x 3 x 1.2 for RC Helicopters  [HI2521060]

Compact shaft collar for Hirobo builds

The HIROBO HI2521060 collar is a compact accessory-scale shaft collar for use on Hirobo helicopter models. Marked 2 x 3 x 1.2, the collar's dimensions indicate the nominal size used to locate and retain slender shafts and linkage rods in assemblies.

Its practical role is to act as a locator and to prevent axial movement, helping servos, bellcranks, and small rotating shafts remain correctly positioned. As an accessory it is aimed at reducing axial play and preserving control geometry during normal servicing and small adjustments.

Installation is straightforward: slide the collar into place on the shaft, align with mating parts, then secure using the existing set screw or fastening method from the model. Take care not to over-tighten the set screw to prevent shaft scoring, and verify runout after installation if precise rotor balance is required.

Designed for model-level repairs and adjustments, the collar is supplied as an RC accessory component.