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 High Base, Series: SPM, 2-7/16 in Bore, 7-7/8 to 9-3/8 in Bolt Center-to-Center Length, 3-1/8 in Base to Bore Centerline, 11-1/2 in Overall Length, 2-3/4 in Overall Width, 6-1/4 in Overall Height, Two-Bolt Base Mounting, Round Bore, 3 in Base Width, Set Screw Locking Device, Nomex Seal, Non-Expansion (Fixed) Expansion, 13971 lb Dynamic Load, 200 to 400 °F, 1100 RPM Maximum, Cast Iron