Precision 5 x 7 x 2 Shaft Collar for RC Models - Hirobo HI2521137  [HI2521137]

Precision 5 x 7 x 2 shaft collar

The Hirobo HI2521137 collar is a precision 5 x 7 x 2 component intended for model helicopters and other scale assemblies where a compact axial clamp is useful. It serves to retain shafts, spacers, or bearings and keep them located within tight mechanical stacks.

To install, position the collar at the desired axial location on the shaft, align with mating parts, and secure using your model's usual fastener method. The part is intended for mechanical retention and fine axial adjustment rather than for transmitting large torque, so confirm correct fit and free rotation before completing assembly.

For setup and maintenance, employ the collar to fine-tune axial endplay or to lock items after shim adjustments. As this accessory is sized for model systems, verify shaft diameter compatibility and surrounding clearance to prevent interference with rotating components or bearings.