Hirobo HI2521098 Precision 3 x 8 x 2 Shaft Collar Blue  [HI2521098]

Precision 3 x 8 x 2 shaft collar for helicopters

The Hirobo HI2521098 collar is a precision, blue-finished 3 x 8 x 2 shaft collar intended for use on model helicopter shafts and small linkages. It provides a neat solution for axial positioning where accurate stops are required.

Measurement details: the collar's bore is sized for a 3mm shaft, the external diameter is approximately 8mm and the width is 2mm, making it appropriate for retaining small gears, spacers or linkage parts on rotor and tail shafts. The coloured finish helps confirm correct placement during assembly or inspection.

Usage notes: fit the collar at the required axial location on the shaft and secure it according to the collar's fastening method. When used as a stop in rotorhead or tail setups, these collars help maintain consistent component positioning and reduce axial play without disturbing bearing seating.