Hirobo HI2500098 Ball Bearing 2x5x2.3 mm 2 pcs 682ZZ  [HI2500098]

Small ball bearings for RC shafts

This pair of ball bearings from Hirobo, listed as HI2500098 and marked 682ZZ, provides two compact bearings sized 2 x 5 x 2.3 mm intended for RC-scale applications. The 682ZZ designation denotes a shielded bearing type commonly used where small shafts require reduced friction and basic protection from debris.

Designed for general helicopter parts and other small RC models that accept 2 x 5 x 2.3 mm bearings, these bearings serve as straightforward replacements for worn or noisy components. Use them to restore smooth rotation on tail drives, small gear assemblies, and similar compact shaft locations where space and tolerance are constrained.

When replacing bearings, confirm the inner diameter matches the 2 mm shaft and check that the outer seat accepts the 5 mm outer diameter. Clean mating surfaces, ensure bearings sit squarely in their seats, and rotate the assembly by hand to verify free movement before full reassembly. These notes reflect typical RC maintenance practice for scale accessories.