Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial
Timken® Double-Row Tapered Roller Bearings with Double Outer Race (TDO)
Available in single, double, and multi-row configurations as well as proprietary sizes, these bearings are developed in collaboration with OE engineers to deliver premium performance across various applications. Their power-dense designs support heavier loads and help extend bearing life, while optimized internal geometry reduces torque and operating temperatures to prolong lubrication system life. Additionally, they can be engineered with proprietary enhancements to withstand highly corrosive conditions, high temperatures, vacuum environments, or situations with limited lubrication.
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Bore (d) (in)
Bore (d) (mm)
O.D. (D) (in)
O.D. (D) (mm)
Width (T) (in)
Width (T) (mm)
Dynamic Radial Load Rating - 1M Revs (C1) (lbf)
Dynamic Radial Load Rating - 1M Revs (C1) (N)
Series
Part Number |
Bore (d) |
O.D. (D) |
Outer Ring Width (C) |
Width (T) |
Inner Ring Width (B) |
Dynamic Radial Load Rating - 1M Revs (C1) |
Dynamic Radial Load Rating - 90M Revs (C90) |
Series |
CAD |
|---|---|---|---|---|---|---|---|---|---|
| 635-902A1 | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.3750 in136.525 mm | Outer Ring Width (C) N/A 3 in76.2 mm | Width (T) N/A 3.75 in95.25 mm | Inner Ring Width (B) N/A 1.625 in41.275 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 91200 lbf406000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 60400 N | Series N/A 635 |
CAD
N/A
|
| 78225C / 78549D | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5 in139.7 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 92600 lbf412000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 13800 lbf61300 N | Series N/A 78000C |
CAD
N/A
|
| 78225-99408 | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5 in139.7 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N | Series N/A 78000 |
CAD
N/A
|
| 78225-90016 | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5 in139.7 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N | Series N/A 78000 |
CAD
N/A
|
| 78225-90017 | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5 in139.7 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N | Series N/A 78000 |
CAD
N/A
|
| 78225-99404 | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5 in139.7 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N | Series N/A 78000 |
CAD
N/A
|
| 78225-90060 | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5 in139.7 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N | Series N/A 78000 |
CAD
N/A
|
| 78225-90071 | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5 in139.7 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N | Series N/A 78000 |
CAD
N/A
|
| 78225 / 78551DF | Bore (d) N/A 2.2500 in57.150 mm | O.D. (D) N/A 5.5100 in139.954 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 mm | Inner Ring Width (B) N/A 1.3085 in33.236 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N | Series N/A 78000 |
CAD
N/A
|
| 388A-90252 | Bore (d) N/A 2.265 in57.531 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 1.6875 in42.863 mm | Width (T) N/A 2.0624 in52.385 mm | Inner Ring Width (B) N/A 0.864 in21.946 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 42200 lbf188000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6280 lbf28000 N | Series N/A 385 |
CAD
N/A
|
| 388A / 384DC | Bore (d) N/A 2.265 in57.531 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 1.6875 in42.863 mm | Width (T) N/A 2.0624 in52.385 mm | Inner Ring Width (B) N/A 0.864 in21.946 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 42200 lbf188000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6280 lbf28000 N | Series N/A 385 |
CAD
N/A
|
| 388A / 384ED | Bore (d) N/A 2.265 in57.531 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 1.562 in39.675 mm | Width (T) N/A 1.9369 in49.197 mm | Inner Ring Width (B) N/A 0.864 in21.946 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 42200 lbf188000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6280 lbf28000 N | Series N/A 385 |
CAD
N/A
|
| 388A / 384XD | Bore (d) N/A 2.265 in57.531 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 3.7640 in95.606 mm | Width (T) N/A 4.1389 in105.128 mm | Inner Ring Width (B) N/A 0.864 in21.946 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 42200 lbf188000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6280 lbf28000 N | Series N/A 385 |
CAD
N/A
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| 388A-90111 | Bore (d) N/A 2.265 in57.531 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 1.6875 in42.863 mm | Width (T) N/A 2.0624 in52.385 mm | Inner Ring Width (B) N/A 0.864 in21.946 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 42200 lbf188000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6280 lbf28000 N | Series N/A 385 |
CAD
N/A
|
| 745 / 742D | Bore (d) N/A 2.3595 in59.931 mm | O.D. (D) N/A 6.125 in155.575 mm | Outer Ring Width (C) N/A 3.375 in85.725 mm | Width (T) N/A 4 in101.6 mm | Inner Ring Width (B) N/A 1.8375 in46.673 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 124000 lbf553000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 18500 lbf82400 N | Series N/A 745 |
CAD
N/A
|
| 745 / 742DC | Bore (d) N/A 2.3595 in59.931 mm | O.D. (D) N/A 6.125 in155.575 mm | Outer Ring Width (C) N/A 3.375 in85.725 mm | Width (T) N/A 4 in101.6 mm | Inner Ring Width (B) N/A 1.8375 in46.673 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 124000 lbf553000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 18500 lbf82400 N | Series N/A 745 |
CAD
N/A
|
| 66589-90019 | Bore (d) N/A 2.3611 in59.972 mm | O.D. (D) N/A 5.1174 in129.982 mm | Outer Ring Width (C) N/A 1.875 in47.625 mm | Width (T) N/A 2.7499 in69.847 mm | Inner Ring Width (B) N/A 1.25 in31.75 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 71700 lbf319000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 10700 lbf47500 N | Series N/A 66500 |
CAD
N/A
|
| 66589-90015 | Bore (d) N/A 2.3611 in59.972 mm | O.D. (D) N/A 5.1174 in129.982 mm | Outer Ring Width (C) N/A 1.875 in47.625 mm | Width (T) N/A 2.7499 in69.847 mm | Inner Ring Width (B) N/A 1.25 in31.75 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 71700 lbf319000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 10700 lbf47500 N | Series N/A 66500 |
CAD
N/A
|
| 66589-90017 | Bore (d) N/A 2.3611 in59.972 mm | O.D. (D) N/A 5.1174 in129.982 mm | Outer Ring Width (C) N/A 1.875 in47.625 mm | Width (T) N/A 2.7499 in69.847 mm | Inner Ring Width (B) N/A 1.25 in31.75 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 71700 lbf319000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 10700 lbf47500 N | Series N/A 66500 |
CAD
N/A
|
| 66589-90021 | Bore (d) N/A 2.3611 in59.972 mm | O.D. (D) N/A 5.1174 in129.982 mm | Outer Ring Width (C) N/A 1.875 in47.625 mm | Width (T) N/A 2.7499 in69.847 mm | Inner Ring Width (B) N/A 1.25 in31.75 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 71700 lbf319000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 10700 lbf47500 N | Series N/A 66500 |
CAD
N/A
|
| 28980-90091 | Bore (d) N/A 2.3613 in59.977 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 1.7500 in44.450 mm | Width (T) N/A 2.1874 in55.56 mm | Inner Ring Width (B) N/A 1.0000 in25.400 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 41500 lbf185000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6180 lbf27500 N | Series N/A 28900 |
CAD
N/A
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| 28980 / 28921DC | Bore (d) N/A 2.3613 in59.977 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 1.7500 in44.450 mm | Width (T) N/A 2.1874 in55.56 mm | Inner Ring Width (B) N/A 1.0000 in25.400 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 41500 lbf185000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6180 lbf27500 N | Series N/A 28900 |
CAD
N/A
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| 28980-90100 | Bore (d) N/A 2.3613 in59.977 mm | O.D. (D) N/A 3.9370 in100.000 mm | Outer Ring Width (C) N/A 1.7500 in44.450 mm | Width (T) N/A 2.1874 in55.56 mm | Inner Ring Width (B) N/A 1.0000 in25.400 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 41500 lbf185000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6180 lbf27500 N | Series N/A 28900 |
CAD
N/A
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| 66586 / 66522D | Bore (d) N/A 2.3613 in59.977 mm | O.D. (D) N/A 5.1174 in129.982 mm | Outer Ring Width (C) N/A 1.875 in47.625 mm | Width (T) N/A 2.7499 in69.847 mm | Inner Ring Width (B) N/A 1.25 in31.75 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 60500 lbf269000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 9010 lbf40100 N | Series N/A 66500 |
CAD
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| 558S-90040 | Bore (d) N/A 2.3617 in59.987 mm | O.D. (D) N/A 4.8750 in123.825 mm | Outer Ring Width (C) N/A 2.5 in63.5 mm | Width (T) N/A 3.1249 in79.372 mm | Inner Ring Width (B) N/A 1.444 in36.678 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 74700 lbf332000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11100 lbf49400 N | Series N/A 555 |
CAD
N/A
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