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Tapered Roller Bearings - TS (Tapered Single) Metric

R - Cone Backface "To Clear" Radius¹	1.520 mm0.060 in
r - Cup Backface "To Clear" Radius²	1.52 mm0.06 in
da - Cone Frontface Backing Diameter	24.5 mm0.96 in
db - Cone Backface Backing Diameter	27 mm1.06 in
Da - Cup Frontface Backing Diameter	48.01 mm1.89 in
Db - Cup Backface Backing Diameter	45.47 mm1.79 in
Ab - Cage-Cone Frontface Clearance	3.3 mm0.13 in
Aa - Cage-Cone Backface Clearance	-1 mm-0.04 in
a - Effective Center Location³	-4.8 mm-0.19 in

C90 - Dynamic Radial Rating (90 million revolutions)⁴	9980 N2240 lbf
C1 - Dynamic Radial Rating (1 million revolutions)⁵	38500 N8660 lbf
C0 - Static Radial Rating	34500 N7760 lbf
C_a90 - Dynamic Thrust Rating (90 million revolutions)⁶	5130 N1150 lbf

K - Factor⁷	1.95
e - ISO Factor⁸	0.3
Y - ISO Factor⁹	2
G1 - Heat Generation Factor (Roller-Raceway)	7.5
G2 - Heat Generation Factor (Rib-Roller End)	5.5
Cg - Geometry Factor¹⁰	0.0458

¹ These maximum fillet radii will be cleared by the bearing corners.
² These maximum fillet radii will be cleared by the bearing corners.
³ Negative value indicates effective center inside cone backface.
⁴ Based on 90 x 10⁶ revolutions L₁₀ life, for The Timken Company life calculation method. C₉₀ and C_a90 are radial and thrust values.
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 C_a90 are radial and thrust values for a single-row, C₉₀₍₂₎ is the two-row radial value.
⁷ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
⁸ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
⁹ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
¹⁰ Geometry constant for Lubrication Life Adjustment Factor a3l.