Hirobo HI2521144 Locating Collar 2.6 x 3 x 2.9  [HI2521144]

Small locating collar for precise seating

This item is an RC-scale replacement intended for Hirobo helicopter general parts assemblies. It serves as a positioning and retention element where close dimensional control is needed along rotating shafts or within mating bores. Treat the collar as a precision spacer for assembly and adjustment rather than a structural load carrier.

Installation is simple for those familiar with rotor-head and tail assembly work: position the collar on the shaft or in the bore, ensure correct axial alignment, then secure nearby fasteners per original practice. After fitting, inspect for free movement and correct endplay to confirm proper seating.

When fine-tuning rotor systems, the collar preserves repeatable shaft positioning which helps with trim stability and makes component swaps more predictable. Always verify fit before flight and monitor the part for wear at scheduled service intervals.