Hirobo HI2521060 Collar 2 x 3 x 1.2 for RC Helicopter Shafts  [HI2521060]

Compact shaft collar for Hirobo rotorheads

This HIROBO HI2521060 collar is a compact RC-scale shaft collar designed for routine parts maintenance on Hirobo helicopter models. The size marking 2 x 3 x 1.2 denotes the collar's nominal dimensions, used to locate and retain small shafts and linkage rods in model subassemblies.

In use the collar serves as a locator and anti-axial device, keeping servos, bellcranks, and small rotating shafts indexed. As an accessory-level component its main job is to minimise axial play and help preserve geometry during tuning sessions and light repairs.

Fitting is simple: slide the collar onto the shaft to the required position, line up with mating parts, then secure with the model's set screw or other fastening. Do not over-torque the set screw to avoid shaft damage, and check runout after fitting when rotor or tail assembly tolerances are critical.

The collar is supplied for model-level repairs and adjustments and is intended as an RC-scale accessory.