2 pcs 682ZZ Shielded Ball Bearings 2x5x2.3 mm HI2500098 by Hirobo  [HI2500098]

Small shielded ball bearings for model shafts

Marked HI2500098 by Hirobo and stamped 682ZZ, this pair of bearings measures 2 x 5 x 2.3 mm and is intended for compact RC applications. The double-shielded format helps prevent particulate ingress while maintaining a low-friction running surface.

They are a practical replacement for worn bearings in micro gear trains, tail rotor drives, and other compact locations where bearing space is limited. Replacing aged bearings can noticeably reduce noise and improve rotation smoothness.

Prior to fitting, ensure the inner bore matches a 2 mm shaft and the housing accommodates a 5 mm outer diameter. Clean the seating area, press the bearings squarely, and manually check rotation before completing reassembly to confirm correct installation. These are standard servicing steps for small models.