Hirobo HI2500110 Ball Bearing Set - 10x15x4 mm (2 pcs)  [HI2500110]

Bearing application and care

This Hirobo HI2500110 ball bearing set includes two 10x15x4 mm bearings intended for rotor shafts, gear supports and comparable mounting points in model helicopters and small RC models. The product is aimed at maintenance replacement to restore smooth rotation and provide steady low-friction running for moving components.

Installation notes: confirm fitment before final assembly, press bearings squarely and avoid off-axis force, and inspect bearing seats and retaining parts for wear. For tuning, bearings support consistent gear mesh and rotor balance; renewing worn bearings is a common measure when investigating vibration or increased resistance in the drivetrain.

Packing: 2 pcs included, packaged as one replacement pair for ease of use.