RC Helicopter Collar 3 x 5 x 4.5F - Hirobo HI2521095  [HI2521095]

RC Helicopter Collar 3 x 5 x 4.5F (HI2521095)

This collar is an RC-scale accessory for helicopter general parts and assemblies. The item is model HI2521095 and shows the size 3 x 5 x 4.5F; use those numbers to confirm fit with the shaft, pin, or bore before installation.

Functioning as a locating and retention component within rotor or transmission subassemblies, the collar secures axial position on small shafts and linkages. For correct installation, match the 3 x 5 x 4.5F dimension to the mating part, set the orientation exactly, and verify the collar seats firmly to prevent movement when loaded. Proper seating supports predictable trim and control response during setup.

During routine service inspect the collar for wear, deformation, or looseness where it meets shafts or bearings; if it no longer holds position reliably replace it. Keep mating surfaces clean and free of debris so the fit remains repeatable after maintenance.