Hirobo HI2500018 Roller Bearing 6 x 10 x 9 mm, 2 pcs  [HI2500018]

Replacement roller bearings for compact RC parts

This Hirobo HI2500018 roller bearing set contains 2 pcs of compact 6 x 10 x 9 mm bearings intended for RC-scale use, primarily in helicopter and general model component applications. These bearings function as low-profile rotating supports where tight dimensional fit and smooth rotation are required in small shafts and gear interfaces.

In practical use, these bearings serve to reduce friction at rotary junctions, stabilise shaft motion, and help maintain consistent gear mesh under light loads typical of model helicopters and similar assemblies. Keep the parts free of grit and handle the bearings carefully to avoid contaminating the raceway.

Installation notes and tuning role:

• Fit: Verify the housing and shaft tolerances match the 6 x 10 x 9 mm form factor before press-fitting to avoid deformation.
• Lubrication: Use an appropriate light bearing lubricant sparingly to preserve smooth rotation without attracting debris.
• Alignment: Ensure bearings are seated squarely to prevent side loading which reduces service life.

Pack contains two identical bearings sold as a set, intended for maintenance or replacement in model assemblies where this size is specified.