7 x 11 x 3 mm ball bearing pair HI2500120 by Hirobo for small RC assemblies  [HI2500120]

Compact 7 x 11 x 3 mm Bearing Set

This listing is for a pair of 7 x 11 x 3 mm ball bearings, supplied as 2 pcs for RC-scale applications including helicopter rotor and small drivetrain fittings. The dimensions and pack count match the small bearing pockets used in many lightweight model linkages and rotating assemblies.

Fitment notes: measure the bore to ensure correct interference, press each bearing straight into its seat using an appropriate driver to prevent skew, and check for axial play or binding once installed. When reusing existing housings, remove grit and old lubricant that could impair seating.

Service and handling: these bearings act as compact rotary supports to reduce friction and stabilise control surfaces when properly installed; monitor for noise or looseness and replace both bearings if wear appears.