Hirobo HI2521082 Collar — 5 x 6.5 x 14 Locating Ring for Helicopter Assemblies  [HI2521082]

Shaft collar specifications

This is the Hirobo HI2521082 collar shown as "COLLAR 5 X 6.5 X 14" within Hirobo's parts listings. It functions as an RC-scale locating and retention element for rotating shafts and internal linkages, with the "5 x 6.5 x 14" marking used to verify fit.

As a mechanical spacer and retention collar, it helps maintain axial position for bearings, gears, or other components while the model runs. Correct fitment is determined by matching the stamped dimensions to the shaft or bore on your Hirobo helicopter or compatible general parts assemblies. Installation normally requires basic tools and access to the shaft area; consult assembly notes for torque and orientation recommendations when relevant.

During maintenance or setup, this collar is useful for controlling component endplay or replacing worn spacers. Since it is a generic collar item in Hirobo's parts hierarchy, check the dimensions before ordering to ensure it suits your rotorhead or gearbox configuration.