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

Small locating collar for RC rotor shafts

The Hirobo HI2521098 is a small, blue 3 x 8 x 2 shaft collar designed for model helicopter applications where precise axial location is needed. Its compact profile makes it suitable for tight assembly areas.

Dimensions and fit: the inner bore suits a 3mm shaft, the outer diameter is approximately 8mm and the width is 2mm, which allows the collar to hold small gears, spacers or link elements on rotor and tail shafts. The blue colour assists with quick visual checks while assembling or maintaining models.

Mounting notes: slide the collar onto the shaft at the desired stop position and secure it following the collar's fastening method. Used properly, collars provide mechanical stops that keep trim stable and limit endplay without upsetting bearing alignment.