Hirobo HI2521086 Collar 12 x 15 x 5 for Helicopter General Parts  [HI2521086]

Collar for helicopter general parts

This collar is a small RC-scale component listed as a general helicopter part from Hirobo, intended to provide a fixed spacer or positioning feature on rotating shafts and linkages in helicopter assemblies.

In practical use the collar locates components along a shaft to maintain axial position and reduce lateral play, helping to keep blade grips, hubs, or bearings aligned without altering dynamic tuning of the airframe.

Installation is straightforward for hobby-level work: slide the collar to the desired position on the shaft, seat it against the adjacent bearing or hub face, and secure any set screw or retaining method provided by the original assembly. Verify alignment and free rotation after fitting.

Routine checks are recommended: confirm the collar remains seated after flights, inspect for wear where it contacts shafts or hubs, and replace if deformation or excessive play appears to preserve predictable control response.