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_1ROWASSY_TS_32005X-90KA1-A
TRB TS Line Drawing
Unit of Measure
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Part Number

Bore (d)

O.D. (D)

Inner Ring Width (B)

Outer Ring Width (C)

Width (T)

Dynamic Radial Load Rating - 1M Revs (C1)

Static Radial Load Rating (C0)

Series

CAD

27875 / 27820 N/A 1.3750 in34.925 mm N/A 3.1510 in80.035 mm N/A 0.933 in23.698 mm N/A 0.7288 in18.512 mm N/A 0.9688 in24.608 mm N/A 17500 lbf78000 N N/A 20500 lbf91100 N N/A 27800 N/A
28137 / 28317 N/A 1.3750 in34.925 mm N/A 3.1510 in80.035 mm N/A 0.8244 in20.94 mm N/A 0.625 in15.875 mm N/A 0.8438 in21.433 mm N/A 16900 lbf75200 N N/A 15500 lbf68900 N N/A 28000 N/A
3379 / 3339 N/A 1.3750 in34.925 mm N/A 3.1510 in80.035 mm N/A 1.1965 in30.391 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 25800 lbf115000 N N/A 29100 lbf129000 N N/A 3300 N/A
3379 / 3320 N/A 1.3750 in34.925 mm N/A 3.1562 in80.167 mm N/A 1.1965 in30.391 mm N/A 0.9375 in23.813 mm N/A 1.1562 in29.367 mm N/A 25800 lbf115000 N N/A 29100 lbf129000 N N/A 3300 N/A
3379 / 3324 N/A 1.3750 in34.925 mm N/A 3.1562 in80.167 mm N/A 1.1965 in30.391 mm N/A 0.8437 in21.430 mm N/A 1.0625 in26.988 mm N/A 25800 lbf115000 N N/A 29100 lbf129000 N N/A 3300 N/A
3379 / 3331 N/A 1.3750 in34.925 mm N/A 3.1562 in80.167 mm N/A 1.1965 in30.391 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 25800 lbf115000 N N/A 29100 lbf129000 N N/A 3300 N/A
3478 / 3422 N/A 1.3750 in34.925 mm N/A 3.1562 in80.167 mm N/A 1.1721 in29.771 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 23500 lbf105000 N N/A 26800 lbf119000 N N/A 3400 N/A
3482 / 3422 N/A 1.3750 in34.925 mm N/A 3.1562 in80.167 mm N/A 1.1721 in29.771 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 23500 lbf105000 N N/A 26800 lbf119000 N N/A 3400 N/A
02877 / 02831 N/A 1.3750 in34.925 mm N/A 3.1875 in80.963 mm N/A 0.875 in22.225 mm N/A 0.6875 in17.463 mm N/A 0.875 in22.225 mm N/A 14800 lbf65700 N N/A 16800 lbf74900 N N/A 02800 N/A
02878 / 02831 N/A 1.3750 in34.925 mm N/A 3.1875 in80.963 mm N/A 0.875 in22.225 mm N/A 0.6875 in17.463 mm N/A 0.875 in22.225 mm N/A 14800 lbf65700 N N/A 16800 lbf74900 N N/A 02800 N/A
3379 / 3329 N/A 1.3750 in34.925 mm N/A 3.2187 in81.755 mm N/A 1.1965 in30.391 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 25800 lbf115000 N N/A 29100 lbf129000 N N/A 3300 N/A
3482 / 3431 N/A 1.3750 in34.925 mm N/A 3.2500 in82.550 mm N/A 1.1721 in29.771 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 23500 lbf105000 N N/A 26800 lbf119000 N N/A 3400 N/A
3478 / 3431 N/A 1.3750 in34.925 mm N/A 3.2500 in82.550 mm N/A 1.1721 in29.771 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 23500 lbf105000 N N/A 26800 lbf119000 N N/A 3400 N/A
417 / 412 N/A 1.3750 in34.925 mm N/A 3.2500 in82.550 mm N/A 1.145 in29.083 mm N/A 1.1875 in30.163 mm N/A 1.3751 in34.928 mm N/A 26000 lbf116000 N N/A 28000 lbf124000 N N/A 415 N/A
417 / 412A N/A 1.3750 in34.925 mm N/A 3.2500 in82.550 mm N/A 1.145 in29.083 mm N/A 0.9375 in23.813 mm N/A 1.1251 in28.578 mm N/A 26000 lbf116000 N N/A 28000 lbf124000 N N/A 415 N/A
3379 / 3328 N/A 1.3750 in34.925 mm N/A 3.3125 in84.138 mm N/A 1.1965 in30.391 mm N/A 0.9375 in23.813 mm N/A 1.1563 in29.370 mm N/A 25800 lbf115000 N N/A 29100 lbf129000 N N/A 3300 N/A
3581 / 3520 N/A 1.3750 in34.925 mm N/A 3.3125 in84.138 mm N/A 1.216 in30.886 mm N/A 0.9375 in23.813 mm N/A 1.1875 in30.163 mm N/A 25500 lbf113000 N N/A 30100 lbf134000 N N/A 3500 N/A
3581 / 3530 N/A 1.3750 in34.925 mm N/A 3.3125 in84.138 mm N/A 1.216 in30.886 mm N/A 0.9375 in23.813 mm N/A 1.1875 in30.163 mm N/A 25500 lbf113000 N N/A 30100 lbf134000 N N/A 3500 N/A
3872 / 3820 N/A 1.3750 in34.925 mm N/A 3.3750 in85.725 mm N/A 1.1875 in30.163 mm N/A 0.9375 in23.813 mm N/A 1.1876 in30.165 mm N/A 27900 lbf124000 N N/A 33200 lbf148000 N N/A 3800 N/A
3872A / 3820 N/A 1.3750 in34.925 mm N/A 3.3750 in85.725 mm N/A 1.1875 in30.163 mm N/A 0.9375 in23.813 mm N/A 1.1875 in30.163 mm N/A 27900 lbf124000 N N/A 33200 lbf148000 N N/A 3800 N/A
3872 / 3821 N/A 1.3750 in34.925 mm N/A 3.3750 in85.725 mm N/A 1.1875 in30.163 mm N/A 0.9375 in23.813 mm N/A 1.1875 in30.163 mm N/A 27900 lbf124000 N N/A 33200 lbf148000 N N/A 3800 N/A
3872A / 3821 N/A 1.3750 in34.925 mm N/A 3.3750 in85.725 mm N/A 1.1875 in30.163 mm N/A 0.9375 in23.813 mm N/A 1.1876 in30.165 mm N/A 27900 lbf124000 N N/A 33200 lbf148000 N N/A 3800 N/A
3581 / 3525 N/A 1.3750 in34.925 mm N/A 3.4375 in87.313 mm N/A 1.216 in30.886 mm N/A 0.9375 in23.813 mm N/A 1.1875 in30.163 mm N/A 25500 lbf113000 N N/A 30100 lbf134000 N N/A 3500 N/A
3581 / 3526 N/A 1.3750 in34.925 mm N/A 3.4375 in87.313 mm N/A 1.216 in30.886 mm N/A 0.9375 in23.813 mm N/A 1.1875 in30.163 mm N/A 25500 lbf113000 N N/A 30100 lbf134000 N N/A 3500 N/A
3872A / 3822RB N/A 1.3750 in34.925 mm N/A 3.4688 in88.108 mm N/A 1.1875 in30.163 mm N/A 0.9375 in23.813 mm N/A 1.1876 in30.165 mm N/A 27900 lbf124000 N N/A 33200 lbf148000 N N/A 3800 N/A
Unit of Measure
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