Hirobo HI2500027 2-Pack 6 x 17 x 6 mm Shielded Ball Bearings for RC Shafts  [HI2500027]

Shielded ball bearing for tight-space shafts

The Hirobo HI2500027 is supplied as two 6 x 17 x 6 mm ball bearings carrying the 606ZZ identifier, designed to provide compact radial support in small-diameter RC shafts and rotating elements.

Purpose and performance: these bearings minimize rotational friction and preserve shaft alignment under radial loads, improving smoothness of power transfer and rotational stability. The 606ZZ designation refers to metal shields on both sides that guard against light debris while maintaining a thin profile.

Installation guidance: use a soft drift or socket to press the bearing squarely into its seat or onto a sleeve, avoid striking the inner race, ensure the bearing spins freely after installation, and allow any required axial play. For upkeep, keep bearings free of contamination and apply a light amount of suitable oil or grease; excessive lubricant can increase drag.

Maintenance advice: monitor for excess play or noise after prolonged use, change bearings in matched pairs when wear is observed, and consider finer lubricants or precision bearings for reduced friction in high-speed applications.