Hirobo HI2500088 8 x 16 x 5 mm Flanged Ball Bearing, 2 pcs  [HI2500088]

RC Flanged Ball Bearing — Features and Fit

This flanged ball bearing is designed for small RC helicopter parts and other compact model assemblies. Supplied as a pair (2 pcs), the bore and outer dimensions are listed in the title to match common shaft and hub interfaces in model rotorcraft and similar mechanisms.

The integral flange provides axial location to hold the bearing without extra spacers. Stainless steel races are specified to withstand wear under typical modelling loads, and the flange assists seating into motor mounts, gear carriers, and hub fittings.

To fit the bearing, press it squarely into the housing until the flange seats against the mating face, check that the shaft rotates freely with minimal endplay, and verify gear alignment. Carry out routine inspections to identify contamination or wear that can hinder smooth operation.

As an upgrade during maintenance, replacing degraded bearings with this flanged type can lower side loads on shafts and improve gear mesh stability in small drivetrains, helping deliver steadier rotor and transmission behavior.