Plain Linear Bearing - Square Flanged SFPM12C 12mm Compensated ID Simplicity Linear Plain Bearing but the TWN blocks are

but the TWN blocks are larger

Shaft lengths: up to 12 ft

Optional ID sizes are 3/16” to 4” Inch Series

25" ID (inner diameter) crowned shell self-aligning bearing inside a housing made of aluminum alloy

Plain Linear Bearing - Square Flanged SFPM12C 12mm Compensated ID Simplicity Linear Plain Bearing but the TWN blocks areSquare flanged plain linear bearing with a 12mm ID, a compensated running clearance, and a standard size aluminum housing featuring a self lubricating Simplicity FrelonGOLD liner bonded directly to the bore of the housing. The square flange allows secure mounting to a machine frame or plate, while the bore lining supports maintenance free linear, rotational, and oscillating motion along a round shaft. Unlike recirculating ball bearings, the FrelonGOLD