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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Key Features

  • Available in single, double and multi-row configurations, as well as proprietary sizes
  • Designed in collaboration with OE engineers to design, engineer and test bearings for premium performance in many applications
  • Power dense designs allow for heavier loads and can help extend bearing life
  • Optimized internal geometry lower torque and operating temperatures to extend lubrication system life
  • Can be designed to withstand high-corrosive, high-temperature and vacuum or low-lubrication environments with proprietary enhancements
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

778 / 774DC N/A 3.625 in92.075 mm N/A 7.125 in180.975 mm N/A 3.375 in85.725 mm N/A 4.125 in104.775 mm N/A 1.89 in48.006 mm N/A 135000 lbf603000 N N/A 20200 lbf89700 N N/A 775 N/A
779 / 774DC N/A 3.875 in98.425 mm N/A 7.125 in180.975 mm N/A 3.375 in85.725 mm N/A 4.125 in104.775 mm N/A 1.89 in48.006 mm N/A 135000 lbf603000 N N/A 20200 lbf89700 N N/A 775 N/A
780W / 774DC N/A 4 in101.6 mm N/A 7.125 in180.975 mm N/A 3.375 in85.725 mm N/A 4.125 in104.775 mm N/A 1.89 in48.006 mm N/A 135000 lbf603000 N N/A 20200 lbf89700 N N/A 775 N/A
783 / 774DC N/A 3.937 in100 mm N/A 7.125 in180.975 mm N/A 3.375 in85.725 mm N/A 4.125 in104.775 mm N/A 1.89 in48.006 mm N/A 135000 lbf603000 N N/A 20200 lbf89700 N N/A 775 N/A
786 / 774DC N/A 4.125 in104.775 mm N/A 7.125 in180.975 mm N/A 3.375 in85.725 mm N/A 4.125 in104.775 mm N/A 1.89 in48.006 mm N/A 135000 lbf603000 N N/A 20200 lbf89700 N N/A 775 N/A
780 / 774DC N/A 4 in101.6 mm N/A 7.125 in180.975 mm N/A 3.375 in85.725 mm N/A 4.125 in104.775 mm N/A 1.89 in48.006 mm N/A 135000 lbf603000 N N/A 20200 lbf89700 N N/A 775 N/A
EE780705 / 781376D N/A 7 in177.8 mm N/A 13.75 in349.250 mm N/A 3.875 in98.425 mm N/A 5.4997 in139.692 mm N/A 2.375 in60.325 mm N/A 343000 lbf1530000 N N/A 51100 lbf227000 N N/A 780000 N/A
EE780655 / 781376D N/A 6.5 in165.1 mm N/A 13.75 in349.250 mm N/A 3.875 in98.425 mm N/A 5.4997 in139.692 mm N/A 2.375 in60.325 mm N/A 343000 lbf1530000 N N/A 51100 lbf227000 N N/A 780000 N/A
EE780688 / 781376D N/A 6.875 in174.625 mm N/A 13.75 in349.250 mm N/A 3.875 in98.425 mm N/A 5.4997 in139.692 mm N/A 2.375 in60.325 mm N/A 343000 lbf1530000 N N/A 51100 lbf227000 N N/A 780000 N/A
78214C / 78549D N/A 2.125 in53.975 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
78214-90055 N/A 2.125 in53.975 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
78250AC / 78549D N/A 2.5 in63.5 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
78248C / 78549D N/A 2.5 in63.5 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
78238C / 78549D N/A 2.375 in60.325 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
78225C / 78549D N/A 2.25 in57.15 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
78238-90074 N/A 2.375 in60.325 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
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
78225-99408 N/A 2.25 in57.15 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
78250-99411 N/A 2.5 in63.5 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
78215C-907A4 N/A 2.125 in53.975 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
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
78225 / 78551DF N/A 2.25 in57.15 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
78238 / 78551DF N/A 2.375 in60.325 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
78250 / 78551DF N/A 2.5 in63.5 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
78214 / 78551DF N/A 2.125 in53.975 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
Unit of Measure
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