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The Timken Company 4500 Mt Pleasant St NW N Canton OH 44720 Phone 234 262 3000 E Mail CustomerCAD timken com Web site www timken com Part Number 59201 Tapered Roller Bearings Single Cones Imperial This is the most basic and most widely used type of tapered roller bearing It consists of two main separable parts the cone inner ring assembly and the cup outer ring It is typically mounted in opposing pairs on a shaft Series 59000 Cone Part Number 59201 Design Units Imperial Cage Type Stamped Steel C1 Dynamic Radial Rating Two Row 1 million revolutions 1 79200 lbf 352000 N C90 2 Dynamic Radial Rating Two Row 90 million revolutions 2 20500 lbf 91300 N Specifications Dimensions Abutment and Fillet Dimensions Basic Load Ratings Factors Specifications Dimensions1 12 2024 Page 1 of 3 d Cone Bore 2 in 50 8 mm B Cone Width 1 4375 in 36 513 mm R Cone Backface To Clear Radius 3 0 030 in 0 80 mm da Cone Frontface Backing Diameter 2 4 in 61 mm db Cone Backface Backing Diameter 2 44 in 62 mm Ab Cage Cone Frontface Clearance 0 09 in 2 3 mm Aa Cage Cone Backface Clearance 0 11 in 2 8 mm a Effective Center Location 4 0 38 in 9 7 mm C90 Dynamic Radial Rating 90 million revolutions 5 11800 lbf 52400 N C1 Dynamic Radial Rating 1 million revolutions 6 45500 lbf 202000 N C0 Static Radial Rating 45400 lbf 202000 N C a90 Dynamic Thrust Rating 90 million revolutions 7 8110 lbf 36100 N Abutment and Fillet Dimensions Basic Load Ratings1 12 2024 Page 2 of 3 K Factor 8 1 45 G1 Heat Generation Factor Roller Raceway 57 3 G2 Heat Generation Factor Rib Roller End 14 7 Cg Geometry Factor 9 0 0999 1 Based on 1 x 10 6 revolutions L 10 life for the ISO life calculation method 2 Based on 90 x 10 6 revolutions L 10 life for The Timken Company life calculation method C 90 and C a90 are radial and thrust values for a single row C 90 2 is the two row radial value 3 These maximum fillet radii will be cleared by the bearing corners 4 Negative value indicates effective center inside cone backface 5 Based on 90 x 10 6 revolutions L 10 life for The Timken Company life calculation method C 90 and C a90 are radial and thrust values 6 Based on 1 x 10 6 revolutions L 10 life for the ISO life calculation method 7 Based on 90 x 10 6 revolutions L 10 life for The Timken Company life calculation method C 90 and C a90 are radial and thrust values for a single row C 90 2 is the two row radial value 8 These factors apply for both inch and metric calculations Consult your Timken representative for instruction on use 9 Geometry constant for Lubrication Life Adjustment Factor a3l Factors1 12 2024 Page 3 of 3 IMPERIAL UNITS 59201 THE TIMKEN COMPANY NORTH CANTON OHIO USA Tapered Roller Bearings Single Cones Imperial Every reasonable effort has been made to ensure the accuracy of the information contained in this writing but no liability is accepted for errors omissions or for any other reason FOR DISCUSSION ONLY Number of Rollers Per Row 16 Dynamic Radial Rating C1 202000 lbf Dynamic Thrust Rating Ca90 36100 lbf Dynamic Radial Rating C90 52400 lbf K Factor 1 45 1 4375 2 0000 2 442 40 0 38 0 09 0 11 To clear 0 03 max Fillet Radius
