Aurora Bearing Company
Aurora Bearing Company
901 Aucutt Rd.
Montgomery, IL 60538
Phone: 630.859.2030 • Fax: 630.859.0971
Email: customersupport@aurorabearing.com • Website: www.aurorabearing.com
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Unit of Measure
1 2 3 

Part Number

d - Bore

D - Cup Outer Diameter

T - Bearing Width across Cones

C - Double Cup Width

C1 - Dynamic Radial Rating (1 million revolutions)

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 CAD Icon (for items table)
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 CAD Icon (for items table)
NA41125 - 41294D N/A 1 1/8 in28.575 mm N/A 2-15/16 in74.613 mm N/A 2.1876 in55.565 mm N/A 1.6250 in41.275 mm N/A 27300 lbf121000 N N/A CAD Icon (for items table)
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 CAD Icon (for items table)
NA08125 - 08231D N/A 1 1/4 in31.75 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 CAD Icon (for items table)
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 CAD Icon (for items table)
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 1.5000 in38.100 mm N/A 21400 lbf95100 N N/A CAD Icon (for items table)
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 1.3750 in34.925 mm N/A 24800 lbf111000 N N/A CAD Icon (for items table)
NA44143 - 44363D N/A 1 7/16 in36.513 mm N/A 3.6250 in92.075 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 32900 lbf147000 N N/A CAD Icon (for items table)
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 1.5000 in38.100 mm N/A 22200 lbf98700 N N/A CAD Icon (for items table)
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 CAD Icon (for items table)
NA44156 - 44363D N/A 1 9/16 in39.688 mm N/A 3.6250 in92.075 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 32900 lbf147000 N N/A CAD Icon (for items table)
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 CAD Icon (for items table)
NA44163 - 44363D N/A 1 5/8 in41.275 mm N/A 3.6250 in92.075 mm N/A 2.1875 in55.562 mm N/A 1.5625 in39.688 mm N/A 39100 lbf174000 N N/A CAD Icon (for items table)
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 1.3750 in34.925 mm N/A 30300 lbf135000 N N/A CAD Icon (for items table)
NA18685 - 18620D N/A 1 3/4 in44.45 mm N/A 3.1250 in79.375 mm N/A 1.6249 in41.272 mm N/A 1.3125 in33.338 mm N/A 20400 lbf90600 N N/A CAD Icon (for items table)
NA438 - 432D N/A 1 3/4 in44.45 mm N/A 3.7500 in95.250 mm N/A 2.4376 in61.915 mm N/A 2.0000 in50.800 mm N/A 49700 lbf221000 N N/A CAD Icon (for items table)
NA53176 - 53376D N/A 1 3/4 in44.45 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 CAD Icon (for items table)
NA53176 - 53390D N/A 1 3/4 in44.45 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 CAD Icon (for items table)
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 in42.070 mm N/A 39900 lbf177000 N N/A CAD Icon (for items table)
NA3780 - 3729D N/A 2 in50.80 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 CAD Icon (for items table)
NA455 - 452D N/A 2 in50.80 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 CAD Icon (for items table)
NA55200 - 55444D N/A 2 in50.80 mm N/A 4-7/16 in112.713 mm N/A 2.5625 in65.088 mm N/A 1.8125 in46.038 mm N/A 41600 lbf185000 N N/A CAD Icon (for items table)
NA539 - 533D N/A 2 1/8 in53.975 mm N/A 4.375 in111.125 mm N/A 3.125 in79.375 mm N/A 2.5 in63.5 mm N/A 67400 lbf300000 N N/A CAD Icon (for items table)
NA66212 - 66462D N/A 2 1/8 in53.975 mm N/A 4.625 in117.475 mm N/A 2.875 in73.025 mm N/A 2.1250 in53.975 mm N/A 58300 lbf259000 N N/A CAD Icon (for items table)
NA72212 - 72488D N/A 2 1/8 in53.975 mm N/A 4-7/8 in123.825 mm N/A 3.0625 in77.788 mm N/A 2.1875 in55.563 mm N/A 64600 lbf287000 N N/A CAD Icon (for items table)
NA385 - 384CD N/A 2.1654 in55.001 mm N/A 3.937 in100 mm N/A 2.0625 in52.388 mm N/A 1.6875 in42.863 mm N/A 42200 lbf188000 N N/A CAD Icon (for items table)
NA397 - 394D N/A 2.3622 in60 mm N/A 4.3307 in110 mm N/A 2.0625 in52.388 mm N/A 1.8125 in46.038 mm N/A 38700 lbf172000 N N/A CAD Icon (for items table)
NA476 - 472D N/A 2.3622 in60 mm N/A 4.7244 in120 mm N/A 2.5626 in65.090 mm N/A 2.1250 in53.975 mm N/A 56100 lbf250000 N N/A CAD Icon (for items table)
NA558 - 552D N/A 2 3/8 in60.325 mm N/A 4-7/8 in123.825 mm N/A 3.125 in79.375 mm N/A 2.5 in63.5 mm N/A 74700 lbf332000 N N/A CAD Icon (for items table)
NA78250 - 78549D N/A 2 1/2 in63.500 mm N/A 5.5 in139.7 mm N/A 3.0625 in77.788 mm N/A 2.0395 in51.803 mm N/A 79300 lbf353000 N N/A CAD Icon (for items table)
NA569 - 563D N/A 2.6250 in66.675 mm N/A 5 in127 mm N/A 3.1875 in80.962 mm N/A 2.5625 in65.088 mm N/A 76900 lbf342000 N N/A CAD Icon (for items table)
NA482 - 472D N/A 2 3/4 in69.850 mm N/A 4.7244 in120 mm N/A 2.5626 in65.090 mm N/A 2.1250 in53.975 mm N/A 56100 lbf250000 N N/A CAD Icon (for items table)
NA643 - 632D N/A 2 3/4 in69.850 mm N/A 5.3750 in136.525 mm N/A 3.75 in95.25 mm N/A 3 in76.2 mm N/A 91200 lbf406000 N N/A CAD Icon (for items table)
NA484 - 472D N/A 2.7559 in70 mm N/A 4.7244 in120 mm N/A 2.5626 in65.090 mm N/A 2.1250 in53.975 mm N/A 56100 lbf250000 N N/A CAD Icon (for items table)
NA567 - 563D N/A 2.8750 in73.025 mm N/A 5 in127 mm N/A 3.1875 in80.962 mm N/A 2.5625 in65.088 mm N/A 76900 lbf342000 N N/A CAD Icon (for items table)
NA495A - 493D N/A 3 in76.2 mm N/A 5.3750 in136.525 mm N/A 2.75 in69.85 mm N/A 2.1250 in53.975 mm N/A 60500 lbf269000 N N/A CAD Icon (for items table)
NA659 - 654D N/A 3 in76.2 mm N/A 6 in152.4 mm N/A 3.75 in95.25 mm N/A 3 in76.2 mm N/A 96700 lbf430000 N N/A CAD Icon (for items table)
NA9378 - 9320D N/A 3 in76.2 mm N/A 7 in177.8 mm N/A 4.3125 in109.538 mm N/A 2.9375 in74.613 mm N/A 142000 lbf632000 N N/A CAD Icon (for items table)
NA580 - 572D N/A 3 1/4 in82.550 mm N/A 5.5115 in139.992 mm N/A 3.25 in82.55 mm N/A 2.6250 in66.675 mm N/A 80900 lbf360000 N N/A CAD Icon (for items table)
NA749 - 742D N/A 3 1/4 in82.550 mm N/A 6-1/8 in155.575 mm N/A 4 in101.6 mm N/A 3.3750 in85.725 mm N/A 147000 lbf656000 N N/A CAD Icon (for items table)
NA842 - 834D N/A 3 1/4 in82.550 mm N/A 6.75 in171.450 mm N/A 4.9375 in125.412 mm N/A 3.9375 in100.013 mm N/A 160000 lbf712000 N N/A CAD Icon (for items table)
NA593 - 592D N/A 3 1/2 in88.900 mm N/A 6 in152.4 mm N/A 3.25 in82.55 mm N/A 2.5 in63.5 mm N/A 84600 lbf376000 N N/A CAD Icon (for items table)
NA759 - 752D N/A 3 1/2 in88.900 mm N/A 6-3/8 in161.925 mm N/A 4.125 in104.775 mm N/A 3.3750 in85.725 mm N/A 128000 lbf570000 N N/A CAD Icon (for items table)
NA98350 - 98789D N/A 3 1/2 in88.900 mm N/A 7.875 in200.025 mm N/A 4.5625 in115.888 mm N/A 3.1581 in80.216 mm N/A 159000 lbf708000 N N/A CAD Icon (for items table)
NA52375 - 52637D N/A 3 3/4 in95.250 mm N/A 6-3/8 in161.925 mm N/A 3.2499 in82.547 mm N/A 2.4375 in61.913 mm N/A 87500 lbf389000 N N/A CAD Icon (for items table)
NA776 - 774CD N/A 3 3/4 in95.250 mm N/A 7-1/8 in180.975 mm N/A 4.125 in104.775 mm N/A 3.3750 in85.725 mm N/A 135000 lbf603000 N N/A CAD Icon (for items table)
NA691A - 672D N/A 3.937 in100 mm N/A 6.625 in168.275 mm N/A 3.625 in92.075 mm N/A 2.75 in69.85 mm N/A 104000 lbf461000 N N/A CAD Icon (for items table)
NA691 - 672D N/A 4 in101.600 mm N/A 6.625 in168.275 mm N/A 3.625 in92.075 mm N/A 2.75 in69.85 mm N/A 104000 lbf461000 N N/A CAD Icon (for items table)
NA780 - 773D N/A 4 in101.600 mm N/A 7.0866 in180 mm N/A 4.125 in104.775 mm N/A 3.3750 in85.725 mm N/A 135000 lbf603000 N N/A CAD Icon (for items table)
Unit of Measure
1 2 3