Hirobo HI2500087 Sealed Ball Bearings 5 x 11 x 4 mm (2 pcs)  [HI2500087]

Durable miniature bearings for rotor assemblies

The Hirobo HI2500087 is a sealed 5 x 11 x 4 mm ball bearing supplied in a set of two for hobby helicopter maintenance and small model repairs. These miniature bearings are intended to extend service life in compact rotating joints and reduce wear-related vibration.

Use the 5 x 11 x 4 mm set in applications such as rotor heads, tail sections, micro gearboxes, or any small rotating junction that requires a sealed compact bearing. The two-piece pack helps you replace both sides of a paired mounting or keep a spare for preventive maintenance.

Care and checks: inspect housings and shafts for damage prior to installation, press the bearing in squarely to avoid race distortion, and consider light lubrication suited for model use if the application recommends it. Replacing aged bearings can noticeably decrease rubbing and improve smoothness during operation.