Hirobo HI2500120 7 x 11 x 3 mm ball bearing set 2 pcs for model helicopters  [HI2500120]

7 x 11 x 3 mm Ball Bearing Replacement

Supplied as a set of two, these 7 x 11 x 3 mm ball bearings are intended for small-scale RC use including helicopter rotor systems and compact drivetrain positions. The dimensions correspond to common small bearing seats used in many control linkages and rotating assemblies.

Fitting recommendations: check bore diameter and seat condition first, press bearings evenly into place using a correct driver to avoid skewing, and confirm there is no binding or axial movement after installation. Clean the seat of any debris when reusing an existing carrier.

Inspection and upkeep: these bearings act as compact rotary supports that help preserve smooth rotation and steady control response when correctly installed; replace bearings as a pair when wear or roughness is observed.