Hirobo HI2521130 8 x 10 x 1 RC Helicopter Shaft Collar  [HI2521130]

Overview: small shaft collar

This Hirobo collar is intended as a compact locating accessory for RC helicopter parts where a precise axial stop is required. The label "8 x 10 x 1" denotes the nominal size that builders use to select collars matching shaft diameters and axial spacing for swashplates, linkages, and other small rotating shafts in the model drivetrain.

Practically, the collar is positioned on the shaft at the required location and then secured using the model's usual retention approach. That may be a set screw within the collar, a clamping arrangement, or securing adjacent fasteners with threadlocker. The part itself provides the seating surface for these methods.

When adjusting rotor head geometry or trimming linkages the collar aids repeatable setups by keeping washer stacks and linkage ends at consistent positions. It is recommended as a maintenance or spare item for fine adjustments rather than as a primary load-bearing component.