Hirobo HI2521110 Collar 5 x 7 x 5 — Linkage Locator for RC Helicopters  [HI2521110]

Linkage locator collar overview

This Hirobo HI2521110 collar is specified at 5 x 7 x 5 for use on model helicopter shafts and control linkages. It provides a fixed locating point so linked components remain correctly positioned along the shaft, supporting consistent alignment of the rotor and tail mechanisms.

Fitting involves sliding the collar to the intended location and securing it with your model's existing retention method or an appropriate compatible fastener. Since the item is intended to locate parts rather than act as a main structural element, ensure it is fully seated to avoid axial play.

For continued reliability, collars help restore concentric alignment after part changes and serve as convenient stops when adjusting linkage travel. Regular inspections should confirm the collar remains secure and free from contamination that could affect seating.