5 x 7 x 13.2 Collar Hirobo HI2521111  [HI2521111]

Axial locator collar for model shafts

Hirobo HI2521111 is a compact aluminium collar intended for axial positioning on small model helicopter shafts, aligning with the 5 x 7 x 13.2 measurement in the name. It serves as a radial locating element and short spacer for shafts and linkages.

Fitment is simple: slide the collar to the required axial position and secure it by the appropriate retention method for your model, whether that is a set screw, circlip, or adhesive. Use the collar to reduce axial play and establish consistent linkage positions during setup.

As a lightweight part it is aimed at maintenance and minor adjustments rather than primary structural duties, and it blends into routine assembly and balance checks for small helicopters.