Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial
Timken® Double Row Tapered Roller Bearing
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)
Part Number |
Bore (d) |
O.D. (D) |
Outer Ring Width (C) |
Width (T) |
Dynamic Radial Load Rating - 1M Revs (C1) |
Dynamic Radial Load Rating - 90M Revs (C90) |
CAD |
|---|---|---|---|---|---|---|---|
| 78248C / 78549D | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250-99411 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250-90022 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250-90023 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250-90024 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250-90061 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
N/A
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| 78250-90085 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250-90095 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250-902A2 | Bore (d) N/A 2 1/2 in63.500 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78250 / 78551DF | Bore (d) N/A 2 1/2 in63.500 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 | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N |
CAD
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| 656-90147 | Bore (d) N/A 2.5575 in64.961 mm | O.D. (D) N/A 6.000 in152.4 mm | Outer Ring Width (C) N/A 3 in76.2 mm | Width (T) N/A 3.7499 in95.247 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 96700 lbf430000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 14400 lbf64000 N |
CAD
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| 656 / 654DC | Bore (d) N/A 2.5575 in64.961 mm | O.D. (D) N/A 6.000 in152.4 mm | Outer Ring Width (C) N/A 3 in76.2 mm | Width (T) N/A 3.7499 in95.247 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 96700 lbf430000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 14400 lbf64000 N |
CAD
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| 747-S / 742D | Bore (d) N/A 2.5575 in64.961 mm | O.D. (D) N/A 6.1250 in155.575 mm | Outer Ring Width (C) N/A 3.375 in85.725 mm | Width (T) N/A 4 in101.6 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 |
CAD
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| 569 / 563D | Bore (d) N/A 2.5576 in64.963 mm | O.D. (D) N/A 5.000 in127 mm | Outer Ring Width (C) N/A 2.5625 in65.088 mm | Width (T) N/A 3.1874 in80.96 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 76900 lbf342000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11400 lbf50900 N |
CAD
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| 569 / 563DC | Bore (d) N/A 2.5576 in64.963 mm | O.D. (D) N/A 5.000 in127 mm | Outer Ring Width (C) N/A 2.5625 in65.088 mm | Width (T) N/A 3.1874 in80.96 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 76900 lbf342000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11400 lbf50900 N |
CAD
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| 29588 / 29526D | Bore (d) N/A 2.5586 in64.988 mm | O.D. (D) N/A 4.4375 in112.713 mm | Outer Ring Width (C) N/A 1.6875 in42.863 mm | Width (T) N/A 2.1874 in55.56 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 43100 lbf192000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 6420 lbf28600 N |
CAD
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| 39586 / 39520DC | Bore (d) N/A 2.5586 in64.988 mm | O.D. (D) N/A 4.4375 in112.713 mm | Outer Ring Width (C) N/A 2.1875 in55.563 mm | Width (T) N/A 2.6875 in68.263 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 65300 lbf291000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 9730 lbf43300 N |
CAD
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| 78255X-90093 | Bore (d) N/A 2.5586 in64.988 mm | O.D. (D) N/A 5.5000 in139.700 mm | Outer Ring Width (C) N/A 2.0395 in51.803 mm | Width (T) N/A 3.0625 in77.788 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 |
CAD
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| 78255X / 78551DF | Bore (d) N/A 2.5586 in64.988 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 | Dynamic Radial Load Rating - 1M Revs (C1) N/A 79300 lbf353000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 11800 lbf52600 N |
CAD
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| 478 / 472DC | Bore (d) N/A 2.5591 in65.001 mm | O.D. (D) N/A 4.7244 in120 mm | Outer Ring Width (C) N/A 2.1250 in53.975 mm | Width (T) N/A 2.5625 in65.088 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 56100 lbf250000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 8360 lbf37200 N |
CAD
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| 478-90304 | Bore (d) N/A 2.5591 in65.001 mm | O.D. (D) N/A 4.7244 in120 mm | Outer Ring Width (C) N/A 2.1250 in53.975 mm | Width (T) N/A 2.5626 in65.09 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 56100 lbf250000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 37200 N |
CAD
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| 478-90043 | Bore (d) N/A 2.5591 in65.001 mm | O.D. (D) N/A 4.7244 in120 mm | Outer Ring Width (C) N/A 2.1250 in53.975 mm | Width (T) N/A 2.5626 in65.09 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 56100 lbf250000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 8360 lbf37200 N |
CAD
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| 478-90042 | Bore (d) N/A 2.5591 in65.001 mm | O.D. (D) N/A 4.7244 in120 mm | Outer Ring Width (C) N/A 2.1250 in53.975 mm | Width (T) N/A 2.5626 in65.09 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 56100 lbf250000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 8360 lbf37200 N |
CAD
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| 39590A / 39520DC | Bore (d) N/A 2.6240 in66.650 mm | O.D. (D) N/A 4.4375 in112.713 mm | Outer Ring Width (C) N/A 2.1875 in55.563 mm | Width (T) N/A 2.6875 in68.263 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 65300 lbf291000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 9730 lbf43300 N |
CAD
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| 395S-90132 | Bore (d) N/A 2.6250 in66.675 mm | O.D. (D) N/A 4.3307 in110 mm | Outer Ring Width (C) N/A 1.8125 in46.038 mm | Width (T) N/A 2.0624 in52.385 mm | Dynamic Radial Load Rating - 1M Revs (C1) N/A 38700 lbf172000 N | Dynamic Radial Load Rating - 90M Revs (C90) N/A 5760 lbf25600 N |
CAD
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