Hirobo HI2500074 Open Flanged Ball Bearings 4 x 7 x 2 mm - Pack of 2  [HI2500074]

Low-profile flanged bearing for model linkages

This Hirobo set includes two 4 x 7 x 2 mm flanged, open ball bearings intended for use in compact RC assemblies. The flange gives a positive locating surface for shallow housings commonly found on small helicopters and other lightweight models.

Care notes: the exposed face makes routine inspection and lubrication simple, but increases exposure to contaminants. Place these bearings where dust ingress is limited and perform light maintenance to keep rolling surfaces clean.

Fitting guidance: align the flange seat, press it in squarely, and confirm the inner race spins freely. Replacing degraded bearings reduces linkage slop and improves fine control feel on delicate inputs.