Helicopter Shaft Collar 5 x 13 x 16 - Hirobo HI2521092  [HI2521092]

Spacer Component for Blade and Swash Systems

This collar is supplied for use with Hirobo helicopter parts and carries the dimensions 5 x 13 x 16 to describe its bore, outer diameter, and thickness. Those figures are essential when assessing clearance and compatibility with shafts and housings.

Fitting the collar is typically straightforward: it functions as a spacer or locator to maintain axial position between moving and fixed parts. Confirm the shaft diameter and bore fit before seating the collar to prevent misalignment or stress on components.

For trimming or maintenance, adjusting collar placement or substituting same-dimension collars can change rotor spacing and help with small balance or linkage corrections without replacing major parts.