Hirobo HI2521010 Control Lever Collar Size 3 x 7 x 6  [HI2521010]

Precision Lever Collar for RC Helis

The Hirobo HI2521010 is a small retaining collar designed for use in helicopter general parts. With nominal dimensions of 3 x 7 x 6, it secures short levers and linkage shafts to prevent axial displacement in model helicopters.

Installation involves sliding the collar onto the shaft or lever, locating it at the point of required retention, and locking it in place using the model's standard fixing method. Installers use these collars to fix linkage pivots or small lever sections in position.

In setup and tuning, the collar reduces endplay and helps keep linkage spacing stable, which improves control predictability. Always recheck linkage clearances and full servo travel after fitting to avoid introducing binding.