• Timken--Double-Row-Non-Adjustable-Industrial-Tapered-Roller-Bearing--TNA--Main_Family-Picture-2026
Timken double-row non-adjustable (TNA) bearings feature extended inner race narrow faces that eliminate the need for a separate inner race spacer. This innovative design reduces assembly time and complexity, making it ideal for high-performance machinery. Supplied with an in-built clearance to give a standard setting range, these bearings provide a solution for many fixed or floating bearing applications in sectors such as manufacturing, mining, construction equipment, and power transmission systems.
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Bore (d) (in)

Bore (d) (mm)

O.D. (D) (in)

O.D. (D) (mm)

Width (T) (in)

Width (T) (mm)

Dynamic Radial Load Rating - 1M Revs (C1) (lbf)

Dynamic Radial Load Rating - 1M Revs (C1) (N)

Part Number

Bore (d)

O.D. (D)

Width (T)

Outer Ring Width (C)

Dynamic Radial Load Rating - 1M Revs (C1)

CAD

NA05075 / 05185D N/A 3/4 in19.05 mm N/A 1.8504 in47 mm N/A 1.25 in31.75 mm N/A 0.9926 in25.212 mm N/A 10500 lbf46500 N N/A
NA17098 / 17245D N/A 0.9835 in24.981 mm N/A 2.4409 in61.999 mm N/A 1.5625 in39.688 mm N/A 1.4275 in36.259 mm N/A 16900 lbf75300 N N/A
NA41125 / 41294D N/A 1 1/8 in28.575 mm N/A 2.9375 in74.613 mm N/A 2.1876 in55.565 mm N/A 1.625 in41.275 mm N/A 27300 lbf121000 N N/A
NA26118 / 26284D N/A 1.1806 in29.987 mm N/A 2.8336 in71.973 mm N/A 1.6835 in42.76 mm N/A 1.4375 in36.513 mm N/A 23000 lbf102000 N N/A
NA08125 / 08231D N/A 1 1/4 in31.750 mm N/A 2.3125 in58.738 mm N/A 1.2812 in32.542 mm N/A 0.9688 in24.608 mm N/A 12400 lbf55200 N N/A
NA43131 / 43319D N/A 1 5/16 in33.338 mm N/A 3.1875 in80.963 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 30400 lbf135000 N N/A
NA14138 / 14276D N/A 1 3/8 in34.925 mm N/A 2.7170 in69.012 mm N/A 1.8126 in46.04 mm N/A 1.5 in38.1 mm N/A 21400 lbf95100 N N/A
NA28138 / 28318D N/A 1.3770 in34.976 mm N/A 3.1510 in80.035 mm N/A 1.8126 in46.04 mm N/A 1.375 in34.925 mm N/A 24800 lbf111000 N N/A
NA44143 / 44363D N/A 1 7/16 in36.513 mm N/A 3.625 in92.075 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 32900 lbf147000 N N/A
NA13687 / 13621D N/A 1 1/2 in38.1 mm N/A 2.7170 in69.012 mm N/A 1.8124 in46.035 mm N/A 1.5 in38.1 mm N/A 22200 lbf98700 N N/A
NA44156 / 44348D N/A 1 9/16 in39.688 mm N/A 3.4843 in88.501 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 32900 lbf147000 N N/A
NA44156 / 44363D N/A 1 9/16 in39.688 mm N/A 3.625 in92.075 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 32900 lbf147000 N N/A
NA357 / 353D N/A 1.5748 in40 mm N/A 3.5480 in90.119 mm N/A 2 in50.8 mm N/A 1.7500 in44.450 mm N/A 32000 lbf142000 N N/A
NA44163 / 44363D N/A 1 5/8 in41.275 mm N/A 3.625 in92.075 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 39100 lbf174000 N N/A
NA22171 / 22325D N/A 1.7188 in43.658 mm N/A 3.2500 in82.550 mm N/A 1.75 in44.45 mm N/A 1.375 in34.925 mm N/A 30300 lbf135000 N N/A
NA18685 / 18620D N/A 1 3/4 in44.450 mm N/A 3.125 in79.375 mm N/A 1.6249 in41.272 mm N/A 1.3125 in33.338 mm N/A 20400 lbf90600 N N/A
NA438 / 432D N/A 1 3/4 in44.450 mm N/A 3.7500 in95.250 mm N/A 2.4376 in61.915 mm N/A 2 in50.8 mm N/A 49700 lbf221000 N N/A
NA53176 / 53376D N/A 1 3/4 in44.450 mm N/A 3.7500 in95.250 mm N/A 2.5626 in65.090 mm N/A 1.7500 in44.450 mm N/A 39200 lbf174000 N N/A
NA53176 / 53390D N/A 1 3/4 in44.450 mm N/A 3.8750 in98.425 mm N/A 2.5626 in65.090 mm N/A 1.7500 in44.450 mm N/A 39200 lbf174000 N N/A
NA366 / 363D N/A 1.9685 in50 mm N/A 3.5433 in90 mm N/A 1.9689 in50.01 mm N/A 1.6563 in42.07 mm N/A 39900 lbf177000 N N/A
NA3780 / 3729D N/A 2 in50.8 mm N/A 3.6718 in93.264 mm N/A 2.5625 in65.088 mm N/A 2.0625 in52.388 mm N/A 47800 lbf213000 N N/A
NA455 / 452D N/A 2 in50.8 mm N/A 4.25 in107.95 mm N/A 2.5626 in65.090 mm N/A 2.1250 in53.975 mm N/A 53100 lbf236000 N N/A
NA55200 / 55444D N/A 2 in50.8 mm N/A 4.4375 in112.713 mm N/A 2.5625 in65.088 mm N/A 1.8125 in46.038 mm N/A 41600 lbf185000 N N/A
NA539 / 533D N/A 2.1250 in53.975 mm N/A 4.3750 in111.125 mm N/A 3.125 in79.375 mm N/A 2.5 in63.5 mm N/A 67400 lbf300000 N N/A
NA66212 / 66462D N/A 2.1250 in53.975 mm N/A 4.6250 in117.475 mm N/A 2.875 in73.025 mm N/A 2.1250 in53.975 mm N/A 58300 lbf259000 N N/A
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