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

3777 / 3729D N/A 1.8125 in46.038 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3779-99403 N/A 1.875 in47.625 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3780-99407 N/A 2 in50.8 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3781-902A1 N/A 1.9375 in49.213 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3782 / 3729D N/A 1.75 in44.45 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3783 / 3729D N/A 1.75 in44.45 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3784-90144 N/A 2 in50.8 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3795 / 3729D N/A 2 in50.8 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3778 / 3729D N/A 1.875 in47.625 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3762 / 3729D N/A 2 in50.8 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 3.0625 in77.788 mm N/A 1.4430 in36.652 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3767A / 3729D N/A 2.0625 in52.388 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3767-90017 N/A 2.0625 in52.388 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3780 / 3729DC N/A 2 in50.8 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
3775 / 3729DC N/A 2 in50.8 mm N/A 3.6718 in93.264 mm N/A 2.0625 in52.388 mm N/A 2.5625 in65.088 mm N/A 1.193 in30.302 mm N/A 47800 lbf213000 N N/A 7120 lbf31700 N N/A 3700 N/A
37431-90029 N/A 4.3125 in109.538 mm N/A 6.25 in158.75 mm N/A 1.5625 in39.688 mm N/A 2.1251 in53.978 mm N/A 0.844 in21.438 mm N/A 45100 lbf201000 N N/A 6710 lbf29900 N N/A 37000 N/A
37431A / 37626D N/A 4.3125 in109.538 mm N/A 6.25 in158.75 mm N/A 1.5625 in39.688 mm N/A 2.1251 in53.978 mm N/A 0.844 in21.438 mm N/A 53400 lbf238000 N N/A 7960 lbf35400 N N/A 37000 N/A
37425-90019 N/A 4.25 in107.95 mm N/A 6.25 in158.75 mm N/A 1.5625 in39.688 mm N/A 2.1251 in53.978 mm N/A 0.844 in21.438 mm N/A 53400 lbf238000 N N/A 7960 lbf35400 N N/A 37000 N/A
37431 / 37626DC N/A 4.3125 in109.538 mm N/A 6.25 in158.75 mm N/A 1.5625 in39.688 mm N/A 2.1251 in53.978 mm N/A 0.844 in21.438 mm N/A 45100 lbf201000 N N/A 6710 lbf29900 N N/A 37000 N/A
386A-90217 N/A 1.875 in47.625 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
387W / 384D N/A 2.25 in57.15 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
386 / 384D N/A 2.1840 in55.474 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 35600 lbf158000 N N/A 5300 lbf23600 N N/A 385 N/A
385X / 384D N/A 2.1654 in55.001 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
385AX / 384D N/A 2 in50.8 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
387S-90191 N/A 2.25 in57.15 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
386AX / 384D N/A 1.875 in47.625 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 35600 lbf158000 N N/A 5300 lbf23600 N N/A 385 N/A
Unit of Measure
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