4 x 8 x 8 mm Roller Bearing Pair - Hirobo HI2500017  [HI2500017]

4 x 8 x 8 mm bearing for compact RC assemblies

This Hirobo HI2500017 roller bearing is supplied as an RC-scale replacement pair, suited to small internal rotating assemblies that need compact support. The set includes 2 pcs to simplify routine component swap-outs.

In field use the bearing lowers friction at typical model rotational speeds and helps keep shafts aligned; best practice is to remove the worn bearing, check the housing for correct tolerances, then press the new bearing evenly onto the shaft with steady pressure or a bearing tool matched to the part size.

During setup and ongoing maintenance verify seating depth and any endplay, use a light model-grade lubricant when required, and inspect regularly for signs of wear or slop that could harm drivetrain delivery. This item is intended for model-scale applications only.