5 x 13 x 16 Collar for Hirobo Helicopter Assemblies HI2521092  [HI2521092]

Collar Use and Fitment Notes

The collar is designed for use with Hirobo helicopter parts and is identified by its 5 x 13 x 16 sizing, indicating bore, outer diameter, and thickness for compatibility checks. Use those measures to verify correct seating on shafts and in housings.

Fitting the collar should be performed by someone familiar with model servicing: it functions as a spacer to hold axial position and maintain clearance between moving components and fixed structure. Confirm exact bore-to-shaft fit to avoid play or over-constraint.

For routine maintenance, replacing or re-positioning collars with the same dimensions is an effective way to correct minor alignment or tracking issues without changing larger components.