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

Compact bearings for small RC shafts

This pair of shielded bearings carries the Hirobo designation HI2500098 and the size marking 682ZZ, offering two compact bearings at 2 x 5 x 2.3 mm for use in small-scale RC mechanisms. The 682ZZ marking indicates metal shields on both sides to limit contamination while keeping friction low.

Made as straightforward replacements for helicopter tail drives and other tiny gear assemblies, these bearings are intended where tight space and precise fit are required. They restore smoother rotation for micro shafts that have become noisy or rough from wear.

Before installation, verify the shaft diameter is 2 mm and that the bearing seat accepts a 5 mm outer diameter. Clean seating surfaces, press the bearing squarely into place, and spin the part by hand to confirm free rotation before final assembly. These are standard maintenance steps for compact RC components.