Hirobo HI2500063 Flanged Ball Bearing 3 x 7 x 2 mm Open Type 2 pcs pack  [HI2500063]

Precision 3 x 7 x 2 mm Flanged Bearing

This Hirobo HI2500063 flanged ball bearing is an RC-scale replacement sized 3 x 7 x 2 mm and supplied as a set of 2 pcs. Its flanged outer ring helps locate the bearing in shallow bores where axial positioning and limited clearance matter. The unit is an open type bearing, so it provides low resistance rolling without integrated seals.

Installation is straightforward for experienced hobbyists: press-fit the flange into a matching recess or retain it with a thin retaining clip where space is limited. Check shaft and bore tolerances before assembly, clean mating surfaces, and avoid overpressing the inner race to prevent raceway damage. Because this is an open bearing, apply a light suitable bearing oil or grease for protection and to reduce wear when used in dusty or exposed RC environments.

In trimming and tuning small RC units, a correctly seated 3 x 7 x 2 mm flanged bearing reduces side play at linkages and rotor pivots, improving mechanical feel and repeatability. Regular inspection and basic maintenance will extend service life and keep small-scale drivetrains and linkage assemblies running smoothly.