Hirobo HI2500078 Ball Bearing 8 x 12 x 3.5 mm, 2 pcs  [HI2500078]

Ball bearing for Hirobo helicopter parts

This RC-scale accessory is a pair of ball bearings listed as HI2500078, supplied as 2 pcs with dimensions 8 x 12 x 3.5 mm. It is intended for use in Hirobo helicopter general parts and other small RC models where compact bearings are required for rotational support.

Install bearings into their housings with clean mating surfaces and correct shaft alignment to avoid play. Check fit on shaft and in bore before final assembly, and replace bearings in matched pairs when servicing rotor heads, small gear trains, or other rotating assemblies to maintain smooth operation and predictable tuning behavior.

This product is described as an RC-scale replacement part for model maintenance and tuning purposes only.