Hirobo HI2521046 3 x 5 x 5 Collar for RC Helicopter General Parts  [HI2521046]

RC Helicopter Collar Details

The Hirobo HI2521046 collar is an RC replacement component listed at 3 x 5 x 5. It serves as a small locating collar where accurate axial placement of shafts or slim components is needed in helicopter general parts.

On models, collars this size are used on transmission shafts, linkages, or spacer posts to retain parts and minimise axial play. Its compact shape is suitable for the confined assemblies typical of electric RC helicopters and related hobby airframes.

To fit, make sure the collar bore matches the shaft diameter, clean mating surfaces, then slide the collar to the intended stop point. If a tighter joint is required, apply an appropriate mechanical retention method, taking care not to overpress and deform the piece.

As a maintenance item, HI2521046 helps preserve control link geometry and keeps preset trim consistent during test flights and bench work. It is an inexpensive consumable for replacing worn spacers without upsetting principal control link settings.