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 setscrew 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. Sealmaster® Pillow Block Ball Bearing Unit, Medium Duty, Series: MP Series, 2-7/8 in Bore, 9 in Bolt Center-to-Center Length, 3-1/2 in Base to Bore Centerline, 13 in Overall Length, 3-1/16 in Overall Width, 7 in Overall Height, Two-Bolt Base Mounting, Round Bore, Set Screw Locking Device, Felt Seal, Non-Expansion (Fixed) Expansion, -20 to 220 °F, Cast Iron, Uncoated