RC Helicopter Collar 3 x 7 x 14 - Hirobo HI2521070  [HI2521070]

Shaft Locator for RC Rotorcraft

This Hirobo collar is offered as a compact positioning accessory for RC-scale helicopter builds where fine axial alignment of shafts or linkages matters. The 3 x 7 x 14 label identifies the collar size so you can match it to the miniature shafts and pins used in model helicopters.

Used during setup, the collar maintains component indexing and alignment, helping with adjustments and light tuning tasks. It is made for model-scale use and operates as a spacer or locator within rotorlink, shaft, or gear-stack zones to reduce unwanted axial movement.

Fitting is quick for experienced builders: place the collar at the chosen spot on the shaft or pin, check for suitable clearances against nearby parts, and secure it by the model's specified retention method. When swapping out an old collar, check mating surfaces for burrs and make sure the collar seats concentrically to prevent vibration in operation.