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Unit of Measure
Items
Timken_TRB_SINGLECONE_TS

Tapered Roller Bearings - Single Cones - Imperial
Timken_TRB_SINGLECONE_TS

Tapered Roller Bearings - Single Cones - Imperial
Timken_TRB_SINGLECONE_TS

Tapered Roller Bearings - Single Cones - Imperial
Timken_TRB_SINGLECONE_TS

Tapered Roller Bearings - Single Cones - Imperial
Timken_TRB_SINGLECONE_TS

Tapered Roller Bearings - Single Cones - Imperial
Series N/A A2000 N/A A2000 N/A A4000 N/A A2000 N/A A4000
Cone Part Number N/A A2031 N/A A2037 N/A A4044 N/A A2047 N/A A4049
Design Units N/A Imperial
d - Cone Bore N/A 0.3125 in7.938 mm N/A 0.3750 in9.525 mm N/A 0.4375 in11.113 mm N/A 0.4719 in11.986 mm N/A 0.4992 in12.680 mm
B - Cone Width N/A 0.4246 in10.785 mm N/A 0.4246 in10.785 mm N/A 0.4326 in10.988 mm N/A 0.4246 in10.785 mm N/A 0.4326 in10.988 mm
R - Cone Backface "To Clear" Radius1 N/A 0.02 in0.50 mm N/A 0.050 in1.300 mm N/A 0.050 in1.300 mm N/A 0.03 in0.800 mm N/A 0.03 in0.800 mm
da - Cone Frontface Backing Diameter N/A 0.49 in12.5 mm N/A 0.53 in13.5 mm N/A 0.61 in15.5 mm N/A 0.61 in15.5 mm N/A 0.69 in17.5 mm
db - Cone Backface Backing Diameter N/A 0.51 in13 mm N/A 0.59 in15 mm N/A 0.69 in17.5 mm N/A 0.65 in16.5 mm N/A 0.69 in17.5 mm
Ab - Cage-Cone Frontface Clearance N/A 0.09 in2.3 mm N/A 0.09 in2.3 mm N/A 0.07 in1.8 mm N/A 0.09 in2.3 mm N/A 0.07 in1.8 mm
Aa - Cage-Cone Backface Clearance N/A -0.03 in-0.8 mm N/A -0.03 in-0.8 mm N/A 0 in0 mm N/A -0.03 in-0.8 mm N/A 0 in0 mm
a - Effective Center Location2 N/A -0.12 in-3 mm N/A -0.12 in-3 mm N/A -0.1 in-2.5 mm N/A -0.12 in-3 mm N/A -0.1 in-2.5 mm
Cage Type N/A Stamped Steel
C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 630 lbf2800 N N/A 630 lbf2800 N N/A 767 lbf3410 N N/A 630 lbf2800 N N/A 767 lbf3410 N
C1 - Dynamic Radial Rating (1 million revolutions)4 N/A 2430 lbf10800 N N/A 2430 lbf10800 N N/A 2960 lbf13200 N N/A 2430 lbf10800 N N/A 2960 lbf13200 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 N/A 4230 lbf18800 N N/A 4230 lbf18800 N N/A 5150 lbf22900 N N/A 4230 lbf18800 N N/A 5150 lbf22900 N
C0 - Static Radial Rating N/A 2070 lbf9230 N N/A 2070 lbf9230 N N/A 2580 lbf11500 N N/A 2070 lbf9230 N N/A 2580 lbf11500 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 437 lbf1940 N N/A 437 lbf1940 N N/A 594 lbf2640 N N/A 437 lbf1940 N N/A 594 lbf2640 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)7 N/A 1100 lbf4880 N N/A 1100 lbf4880 N N/A 1330 lbf5940 N N/A 1100 lbf4880 N N/A 1330 lbf5940 N
K - Factor8 N/A 1.44 N/A 1.44 N/A 1.29 N/A 1.44 N/A 1.29
G1 - Heat Generation Factor (Roller-Raceway) N/A 1.7 N/A 1.7 N/A 2.3 N/A 1.7 N/A 2.3
G2 - Heat Generation Factor (Rib-Roller End) N/A 3.2 N/A 3.2 N/A 4.12 N/A 3.2 N/A 4.12
Cg - Geometry Factor9 N/A 0.0308 N/A 0.0308 N/A 0.0355 N/A 0.0308 N/A 0.0355
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 Negative value indicates effective center inside cone backface.
  • 3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 4 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 6 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 7 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(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.