Hirobo HI2500027 Ball Bearing 6 x 17 x 6 mm, 2 pcs for RC shafts  [HI2500027]

Ball bearing for compact RC shafts

This Hirobo HI2500027 is a pair of 6 x 17 x 6 mm ball bearings supplied as 2 pcs and identified with the 606ZZ marking. It is an RC-scale accessory intended for applications where a compact radial support is required on small-diameter shafts, such as drivetrain linkages or rotating assemblies in electric models.

Design and role: the bearing reduces rotational friction and keeps shaft alignment under radial load, helping smooth power transfer and stabilise rotating parts. Its 606ZZ designation denotes metal shields on both sides, providing basic protection against debris while keeping a low profile.

Installation notes: press the bearing squarely into its housing or onto a shaft sleeve using a soft drift to avoid hammering the inner race, verify free rotation after seating, and maintain axial clearance where required. For service, keep bearings clean and apply a light dab of appropriate bearing oil or grease; avoid overfilling which can increase drag.

Maintenance and tuning: inspect for play or noise after heavy use, replace bearings in matched pairs when wear appears, and consider lighter lubricant or higher-precision bearings if you need lower friction for high-RPM components.