Hirobo HI2500092 2 x 5 x 2 mm open ball bearing pair for RC helicopter applications  [HI2500092]

Small-format 2x5x2mm open bearings for mini RC gearboxes

This Hirobo HI2500092 twin pack comprises two open 2 x 5 x 2 mm ball bearings intended for periodic servicing and part replacement in small RC helicopter systems. The open cages reveal the balls and races so you can quickly assess condition and apply light lubricant.

These bearings match general Hirobo helicopter components and compact drivetrains specifying 2 x 5 x 2 mm bearings. Always verify inner and outer diameters against the component drawings before installation.

Installation guidance: clean the shaft and bore, press the bearing evenly without stressing the rolling elements, and use minimal lubricant targeted with a fine tool if required. Open bearings take light oil rather than heavy greases.

Service benefits: fresh bearings lower friction at rotor joints and gearbox interfaces, smoothing rotation and cutting down on wear to mating gears. Replace bearings in matched pairs to sustain rotor balance and drivetrain reliability.