NTN 6308C3 Radial/Deep Groove Ball Bearing - Round Bore, 40 mm ID, 90 mm OD, 23 mm Width, Double Sealed, C3 Internal Clearance SPECIFICATIONS Bore Diameter40 mm Outside Diameter90 mm Overall Width23 mm Bore TypeRound Closure TypeDouble Sealed Row Type & Fill SlotSingle Row Non-Fill Slot Snap Ring IncludedWithout Snap Ring Internal ClearanceC3 Operating Temperature Range-40 to 120 ºC Dynamic Load Capacity40500 N Static Load Capacity24000 N Precision RatingClass 0 Finish/CoatingUncoated Bearing MaterialHigh Carbon Chrome Steel Cage MaterialSteel Inner Ring Width23 mm Outer Ring Width23 mm Maximum RPM (Grease)7800 rpm Maximum RPM (Oil)9200 rpm Fillet Radius1.5 mm Maximum RPM9200 RPM Series63 Manufacturer Product PageClick here Weight1.39 lbs Package Includes : ONE BEARING 6308 C3 NTN (OPEN, NO SEALS)