Brand NTN Item Number 6301LLU C3/5K NTN Technical details (LLU C3/5K) LLU=(2RS1-SKF)=Rubber Seals At Each Side Of The Bearing. C3=Internal Clearance Larger Than Normal. 5K=(Segment Lubrication, Code 4)=Grease: Kyodo Yushi / Multemp SRL (-40°C to +150°C). Also known as 6301-2RS1/C3 Category Deep Groove Ball Bearings Single Row Inner (d) MM 12 Outer (D) MM 37 Width (B) MM 12 Weight (kg) 0.0610 Manufacturer Part Number (MPN) 6301LLU C3/5K Bore C - Cylindrical Bore Seal 2RS - Rubber Seal on Two Sides Cage Type S - Steel or Standard Cage External Modification No External Modification Radial Internal Play C3 Internal Play (Higher than Cn) Precision Standard Precision Lubrication Higher and Lower Temperature Grease Heat Stabilization No Heat Stabilization - Temperatures up to 120°C Special Treatment No Special Treatment