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

635-902A1 N/A 2.2500 in57.150 mm N/A 5.3750 in136.525 mm N/A 3 in76.2 mm N/A 3.75 in95.25 mm N/A 1.625 in41.275 mm N/A 91200 lbf406000 N N/A 60400 N N/A 635 N/A
78225C / 78549D N/A 2.2500 in57.150 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
78225-99408 N/A 2.2500 in57.150 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
78225-90016 N/A 2.2500 in57.150 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
78225-90017 N/A 2.2500 in57.150 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
78225-99404 N/A 2.2500 in57.150 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
78225-90060 N/A 2.2500 in57.150 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
78225-90071 N/A 2.2500 in57.150 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
78225 / 78551DF N/A 2.2500 in57.150 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
388A-90252 N/A 2.265 in57.531 mm N/A 3.9370 in100.000 mm N/A 1.6875 in42.863 mm N/A 2.0624 in52.385 mm N/A 0.864 in21.946 mm N/A 42200 lbf188000 N N/A 6280 lbf28000 N N/A 385 N/A
388A / 384DC N/A 2.265 in57.531 mm N/A 3.9370 in100.000 mm N/A 1.6875 in42.863 mm N/A 2.0624 in52.385 mm N/A 0.864 in21.946 mm N/A 42200 lbf188000 N N/A 6280 lbf28000 N N/A 385 N/A
388A / 384ED N/A 2.265 in57.531 mm N/A 3.9370 in100.000 mm N/A 1.562 in39.675 mm N/A 1.9369 in49.197 mm N/A 0.864 in21.946 mm N/A 42200 lbf188000 N N/A 6280 lbf28000 N N/A 385 N/A
388A / 384XD N/A 2.265 in57.531 mm N/A 3.9370 in100.000 mm N/A 3.7640 in95.606 mm N/A 4.1389 in105.128 mm N/A 0.864 in21.946 mm N/A 42200 lbf188000 N N/A 6280 lbf28000 N N/A 385 N/A
388A-90111 N/A 2.265 in57.531 mm N/A 3.9370 in100.000 mm N/A 1.6875 in42.863 mm N/A 2.0624 in52.385 mm N/A 0.864 in21.946 mm N/A 42200 lbf188000 N N/A 6280 lbf28000 N N/A 385 N/A
745 / 742D N/A 2.3595 in59.931 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
745 / 742DC N/A 2.3595 in59.931 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
66589-90019 N/A 2.3611 in59.972 mm N/A 5.1174 in129.982 mm N/A 1.875 in47.625 mm N/A 2.7499 in69.847 mm N/A 1.25 in31.75 mm N/A 71700 lbf319000 N N/A 10700 lbf47500 N N/A 66500 N/A
66589-90015 N/A 2.3611 in59.972 mm N/A 5.1174 in129.982 mm N/A 1.875 in47.625 mm N/A 2.7499 in69.847 mm N/A 1.25 in31.75 mm N/A 71700 lbf319000 N N/A 10700 lbf47500 N N/A 66500 N/A
66589-90017 N/A 2.3611 in59.972 mm N/A 5.1174 in129.982 mm N/A 1.875 in47.625 mm N/A 2.7499 in69.847 mm N/A 1.25 in31.75 mm N/A 71700 lbf319000 N N/A 10700 lbf47500 N N/A 66500 N/A
66589-90021 N/A 2.3611 in59.972 mm N/A 5.1174 in129.982 mm N/A 1.875 in47.625 mm N/A 2.7499 in69.847 mm N/A 1.25 in31.75 mm N/A 71700 lbf319000 N N/A 10700 lbf47500 N N/A 66500 N/A
28980-90091 N/A 2.3613 in59.977 mm N/A 3.9370 in100.000 mm N/A 1.7500 in44.450 mm N/A 2.1874 in55.56 mm N/A 1.0000 in25.400 mm N/A 41500 lbf185000 N N/A 6180 lbf27500 N N/A 28900 N/A
28980 / 28921DC N/A 2.3613 in59.977 mm N/A 3.9370 in100.000 mm N/A 1.7500 in44.450 mm N/A 2.1874 in55.56 mm N/A 1.0000 in25.400 mm N/A 41500 lbf185000 N N/A 6180 lbf27500 N N/A 28900 N/A
28980-90100 N/A 2.3613 in59.977 mm N/A 3.9370 in100.000 mm N/A 1.7500 in44.450 mm N/A 2.1874 in55.56 mm N/A 1.0000 in25.400 mm N/A 41500 lbf185000 N N/A 6180 lbf27500 N N/A 28900 N/A
66586 / 66522D N/A 2.3613 in59.977 mm N/A 5.1174 in129.982 mm N/A 1.875 in47.625 mm N/A 2.7499 in69.847 mm N/A 1.25 in31.75 mm N/A 60500 lbf269000 N N/A 9010 lbf40100 N N/A 66500 N/A
558S-90040 N/A 2.3617 in59.987 mm N/A 4.8750 in123.825 mm N/A 2.5 in63.5 mm N/A 3.1249 in79.372 mm N/A 1.444 in36.678 mm N/A 74700 lbf332000 N N/A 11100 lbf49400 N N/A 555 N/A
Unit of Measure
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