Bearings, Mounted

FSC 3130: Bearings, Mounted

Federal Supply Class (FSC) 3130 covers mounted bearings, meaning bearings supplied in a housing or pillow block. These NSN items support shaft mounting in machinery and equipment.

Mounted bearings provide a ready-to-install shaft support that bolts directly to a frame. They simplify machine assembly and maintenance.

Common types include pillow block, flange, and take-up bearing units. Housings are cast iron or steel with antifriction bearing inserts.