The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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.
Timken_TRB_2ROWASSY_TDO_438-90092-A3
TRB TDO Line Drawing
Unit of Measure
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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

78248C / 78549D N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 92600 lbf412000 N N/A 13800 lbf61300 N N/A 78000C N/A
78250-99411 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250-90022 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250-90023 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250-90024 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250-90061 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250-90085 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250-90095 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250-902A2 N/A 2.5000 in63.500 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78250 / 78551DF N/A 2.5000 in63.500 mm N/A 5.5100 in139.954 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.3085 in33.236 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
656-90147 N/A 2.5575 in64.961 mm N/A 6.0000 in152.400 mm N/A 3 in76.2 mm N/A 3.7499 in95.247 mm N/A 1.625 in41.275 mm N/A 96700 lbf430000 N N/A 14400 lbf64000 N N/A 655 N/A
656 / 654DC N/A 2.5575 in64.961 mm N/A 6.0000 in152.400 mm N/A 3 in76.2 mm N/A 3.7499 in95.247 mm N/A 1.625 in41.275 mm N/A 96700 lbf430000 N N/A 14400 lbf64000 N N/A 655 N/A
747-S / 742D N/A 2.5575 in64.961 mm N/A 6.125 in155.575 mm N/A 3.375 in85.725 mm N/A 4 in101.6 mm N/A 1.8375 in46.673 mm N/A 124000 lbf553000 N N/A 18500 lbf82400 N N/A 745 N/A
569 / 563D N/A 2.5576 in64.963 mm N/A 5 in127 mm N/A 2.5625 in65.088 mm N/A 3.1874 in80.96 mm N/A 1.424 in36.17 mm N/A 76900 lbf342000 N N/A 11400 lbf50900 N N/A 565 N/A
569 / 563DC N/A 2.5576 in64.963 mm N/A 5 in127 mm N/A 2.5625 in65.088 mm N/A 3.1874 in80.96 mm N/A 1.424 in36.17 mm N/A 76900 lbf342000 N N/A 11400 lbf50900 N N/A 565 N/A
29588 / 29526D N/A 2.5586 in64.988 mm N/A 4.4375 in112.713 mm N/A 1.6875 in42.863 mm N/A 2.1874 in55.56 mm N/A 1.0000 in25.400 mm N/A 43100 lbf192000 N N/A 6420 lbf28600 N N/A 29500 N/A
39586 / 39520DC N/A 2.5586 in64.988 mm N/A 4.4375 in112.713 mm N/A 2.1875 in55.563 mm N/A 2.6875 in68.263 mm N/A 1.2175 in30.925 mm N/A 65300 lbf291000 N N/A 9730 lbf43300 N N/A 39500 N/A
78255X-90093 N/A 2.5586 in64.988 mm N/A 5.5 in139.7 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.2962 in32.923 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
78255X / 78551DF N/A 2.5586 in64.988 mm N/A 5.5100 in139.954 mm N/A 2.0395 in51.803 mm N/A 3.0625 in77.788 mm N/A 1.2962 in32.923 mm N/A 79300 lbf353000 N N/A 11800 lbf52600 N N/A 78000 N/A
478 / 472DC N/A 2.5591 in65.001 mm N/A 4.7244 in120.000 mm N/A 2.1250 in53.975 mm N/A 2.5625 in65.088 mm N/A 1.142 in29.007 mm N/A 56100 lbf250000 N N/A 8360 lbf37200 N N/A 475 N/A
478-90304 N/A 2.5591 in65.001 mm N/A 4.7244 in120.000 mm N/A 2.1250 in53.975 mm N/A 2.5626 in65.09 mm N/A 1.142 in29.007 mm N/A 56100 lbf250000 N N/A 37200 N N/A 475 N/A
478-90043 N/A 2.5591 in65.001 mm N/A 4.7244 in120.000 mm N/A 2.1250 in53.975 mm N/A 2.5626 in65.09 mm N/A 1.142 in29.007 mm N/A 56100 lbf250000 N N/A 8360 lbf37200 N N/A 475 N/A
478-90042 N/A 2.5591 in65.001 mm N/A 4.7244 in120.000 mm N/A 2.1250 in53.975 mm N/A 2.5626 in65.09 mm N/A 1.142 in29.007 mm N/A 56100 lbf250000 N N/A 8360 lbf37200 N N/A 475 N/A
39590A / 39520DC N/A 2.6240 in66.650 mm N/A 4.4375 in112.713 mm N/A 2.1875 in55.563 mm N/A 2.6875 in68.263 mm N/A 1.1875 in30.163 mm N/A 65300 lbf291000 N N/A 9730 lbf43300 N N/A 39500 N/A
395S-90132 N/A 2.6250 in66.675 mm N/A 4.3307 in110.000 mm N/A 1.8125 in46.038 mm N/A 2.0624 in52.385 mm N/A 0.866 in21.996 mm N/A 38700 lbf172000 N N/A 5760 lbf25600 N N/A 395 N/A
Unit of Measure
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