The Timken Company - Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)

Smarter Bearing Selection Is Here

The Timken ^® Syber ^® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.

Learn More

Analyze Bearing Performance in an Application with Timken ^® Syber ^® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

Learn More

Save Time and Design with Confidence.
Register Today for Timken's Online Engineering Tools Webinar.

Batch CAD Cart (0) ▾

Request Information Advanced Search Add to CAD Cart

Unit of Measure

Items	A4059 - A4138 (X5SA4059 - K524667R) Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)	LM11749 - LM11710 (K106398R - K106397R) Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)	LM11949 - LM11910 (K107061R - K107087R) Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)	L44643 - L44610 (K106790R - K106789R) Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)	15578 - 15520 (X1S-15578 - K158879R) Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)
Cone Part Number	N/A A4059	N/A LM11749	N/A LM11949	N/A L44643	N/A 15578
Cup Part Number	N/A A4138	N/A LM11710	N/A LM11910	N/A L44610	N/A 15520
Full Timken Part Number	N/A
Inner Spacer Part Number	N/A X5SA4059	N/A K106398R	N/A K107061R	N/A K106790R	N/A X1S-15578
Outer Spacer Part Number	N/A K524667R	N/A K106397R	N/A K107087R	N/A K106789R	N/A K158879R
d - Bore	N/A 0.5901 in14.989 mm	N/A 11/16 in17.463 mm	N/A 3/4 in19.05 mm	N/A 1 in25.40 mm	N/A 1 in25.40 mm
D - Cup Outer Diameter	N/A 1.3775 in34.989 mm	N/A 1.5700 in39.878 mm	N/A 1.7810 in45.237 mm	N/A 1.9800 in50.292 mm	N/A 2.2500 in57.150 mm
T - Width	N/A 0.9660 in24.536 mm	N/A 1.1900 in30.226 mm	N/A 1.5 in38.1 mm	N/A 1.2450 in31.623 mm	N/A 1.5450 in39.243 mm
C - Width	N/A 0.7874 in20.000 mm	N/A 0.9400 in23.876 mm	N/A 1.2300 in31.242 mm	N/A 0.9650 in24.511 mm	N/A 1.2326 in31.308 mm
Snap Ring Diameter	N/A 1.43 in36.35 mm	N/A 1.65 in41.91 mm	N/A 1.84 in46.81 mm	N/A 2.08 in52.78 mm	N/A 2.35 in59.72 mm
Snap Ring Width	N/A 0.10 in2.54 mm	N/A 0.10 in2.54 mm	N/A 0.28 in7.11 mm	N/A 0.13 in3.18 mm	N/A 0.17 in0.34 mm
R - Cone Backface "To Clear" Radius¹	N/A 0.03 in0.800 mm	N/A 0.050 in1.270 mm	N/A 0.050 in1.270 mm	N/A 0.050 in1.270 mm	N/A 0.050 in1.300 mm
r - Cup Backface "To Clear" Radius²	N/A 0.050 in1.27 mm	N/A 0.050 in1.27 mm	N/A 0.050 in1.27 mm	N/A 0.050 in1.27 mm	N/A 0.06 in1.52 mm
db - Cone Backface Backing Diameter	N/A 0.77 in19.5 mm	N/A 0.94 in24 mm	N/A 0.98 in25 mm	N/A 1.26 in32 mm	N/A 1.28 in32.5 mm
Da - Cup Frontface Backing Diameter	N/A 1.28 in32.51 mm	N/A 1.48 in37.59 mm	N/A 1.65 in41.90 mm	N/A 1.87 in47.50 mm	N/A 2.11 in53.10 mm
C90 - Dynamic Radial Rating (90 million revolutions)	N/A 767 lbf3410 N	N/A 1710 lbf7610 N	N/A 2280 lbf10100 N	N/A 2080 lbf9230 N	N/A 3180 lbf14100 N
C1 - Dynamic Radial Rating (1 million revolutions)³	N/A 5150 lbf22900 N	N/A 11500 lbf51100 N	N/A 15300 lbf68100 N	N/A 13900 lbf62000 N	N/A 21300 lbf94900 N
C_a90 - Dynamic Thrust Rating (90 million revolutions)⁴	N/A 594 lbf2640 N	N/A 838 lbf3730 N	N/A 1170 lbf5220 N	N/A 1330 lbf5910 N	N/A 1880 lbf8380 N
C90₍₂₎ - Dynamic Radial Rating (Two-Row, 90 million revolutions)⁵	N/A 1330 lbf5940 N	N/A 2980 lbf13300 N	N/A 3970 lbf17700 N	N/A 3610 lbf16100 N	N/A 5530 lbf24600 N
K - Factor⁶	N/A 1.29	N/A 2.04	N/A 1.94	N/A 1.56	N/A 1.69
e - ISO Factor⁷	N/A 0.45	N/A 0.29	N/A 0.3	N/A 0.37	N/A 0.35
Y1 - ISO Factor⁸	N/A 1.49	N/A 2.36	N/A 2.25	N/A 1.8	N/A 1.95
Y2 - ISO Factor⁹	N/A 2.22	N/A 3.51	N/A 3.34	N/A 2.69	N/A 2.9
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 Based on 1 x 10⁶ revolutions L₁₀ life, for the ISO life calculation method. 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 for a single-row, C₉₀₍₂₎ is the two-row radial value. ⁵ 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. ⁶ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. 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.