Sealmaster® gold mounted ball bearings feature a wide outer race insert bearing with land riding metallic retainer. The black oxide treated bearing steel insert features an exclusive lock pin and dimple system providing a direct path for lubrication into the bearing and prevents outer ring rotation within the housing. Shaft lock is achieved by either set screw or Skwezloc® concentric locking collar. The felt seal with flinger provide a good balance between contaminant entry, GoldPlex® HP™ grease loss and friction. Depending on your preference, these bearings are available in both inch and metric shaft sizes with a wide variety of cast iron, stamped steel or rubber mount housings, sealing and lubrication options or industry specific solutions as illustrated. Sealmaster® Pillow Block Ball Bearing, 1-Piece Medium Duty, Series: MP Series, 1.438 in Bore Dia, 5 to 6-3/8 in Bolt Center-to-Center Length, 2-1/8 in Base to Bore Centerline, 8 in Overall Length, 4.188 in Overall Height, Two-Bolt Base Mount, Straight Bore Type, 2-1/4 in Base Width, Set Screw Locking Device, Contact Seal, Non-Expansion, 7340 lb Dynamic, 220 °F, 4150 RPM Maximum, 52100 Steel, Black Oxide