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BALL BEARINGS SIZE CHART

Ball Bearing Sizes and Dimensions

Ball bearings are available in all different sizes, depending on the shaft size and requirements of the application. As they are used in all types of industries, they are needed for a large variety of application sizes, from skateboard wheels to oil drills. How are these bearing sizes determined?

 

How Bearings Are Sized

 

Bearings are measured by their inner diameter, outer diameter, and width; the size of a bearing is normally listed as such: ID x OD x W. These measurements are normally taken in millimeters, but can be converted to inches. In fact, most manufacturers and suppliers offer bearing measurements in both imperial and metric systems.

Each combination of these measurements corresponds to a series number, usually located directly on the bearing. Ball bearing size charts are widely available, and can be used to find the measurements of a specific bearing. Series 6200 and 6300 are the most commonly used, and typically range from 10 x 30 x 9 mm (.394 x 1.181 x .354 in) to 150 x 320 x 65 mm (5.906 x 12.598 x 2.559 in).

 

6000 Series

Size Inner Dimension Outer Dimension Width Dynamic (Cr) Static (Cor) Weight (lb)
6000 10 26 8 1030 445 0.042
6001 12 28 8 1147 535 0.048
6002 15 32 9 1254 641 0.068
6003 17 35 10 1349 731 0.088
6004 20 42 12 2109 1129 0.150
6005 25 47 12 2248 1315 0.172
6006 30 55 13 2967 1866 0.242
6007 35 62 14 3642 2360 0.0326
6008 40 68 15 3867 2653 0.407
6009 45 75 16 4721 3327 0.506
6010 50 80 16 4946 3642 .0568
6011 55 90 18 6789 4901 .0796
6012 60 95 18 7081 5440 .0847
6013 65 100 18 6857 5665 0.957
6014 70 110 20 8565 6947 1.324
6015 75 115 20 8902 7531 1.404
6016 80 125 22 10701 8947 1.870
6017 85 130 22 11128 9689 1.958
6018 90 140 24 13084 11173 2.552
6019 95 145 24 13578 12117 2.662
6020 100 150 24 13533 12185 2.750
6021 105 160 26 16254 14792 3.498
6022 110 170 28 18434 16411 4.312
6024 120 180 28 18659 17535 4.796
6026 130 200 33 23380 22481 7.326
6028 140 210 33 24279 24279 7.832
6030 150 225 35 27427 28101 9.636

 

6200 Series

Size Inner Dimension Outer Dimension Width Dynamic (Cr) Static (Cor) Weight (lb)
6200 10 30 9 1147 535 0.070
6201 12 32 10 1533 686 0.077
6202 15 35 11 1720 836 0.099
6203 17 40 12 2154 1075 0.141
6204 20 47 14 2878 1495 0.227
6205 47 52 15 3147 1771 0.279
6206 30 62 16 4384 2585 0.440
6207 35 72 17 5733 3417 0.634
6208 40 80 15 6632 4047 0.810
6209 45 85 19 7081 4609 0.915
6210 50 90 20 7868 5216 1.019
6211 55 100 21 9757 6609 1.335
6212 60 110 22 11780 8138 1.723
6213 65 120 23 12859 9015 2.178
6214 70 125 24 13983 9914 2.354
6215 75 130 25 15152 10858 2.596
6216 80 140 26 16344 11915 3.080
6217 85 150 28 18884 13916 3.938
6218 90 160 30 21604 16074 4.730
6219 95 170 32 24504 18412 5.764
6220 100 180 34 27427 20930 6.908
6221 105 190 36 29899 23605 8.140
6222 110 200 38 32372 26303 9.592
6224 120 215 40 32822 27427 12.386
6226 130 230 40 37318 32822 13.728
6228 140 250 42 39566 37318 17.754
6230 150 270 45 39566 38217 22.660

 

6300 Series

Size Inner Dimension Outer Dimension Width Dynamic (Cr) Static (Cor) Weight (lb)
6300 10 35 11 1720 782 0.12
6301 12 37 12 2185 1142 0.13
6302 15 42 13 2585 1218 0.18
6303 17 47 14 3035 1479 0.24
6304 20 52 15 3552 1771 0.31
6305 47 62 17 4991 2585 0.48
6306 30 72 19 6070 3417 0.77
6307 35 80 21 7464 4316 1.00
6308 40 90 23 9172 5395 1.41
6309 45 100 25 11870 7149 1.92
6310 50 110 27 13938 8610 2.35
6311 55 120 29 16096 10116 3.01
6312 60 130 31 18412 11735 3.74
6313 65 140 33 20840 13466 4.58
6314 70 150 35 23380 15322 5.54
6315 75 160 37 25403 17355 6.64
6316 80 170 39 27651 19491 7.90
6317 85 180 41 29899 21761 9.31
6318 90 190 43 32148 24054 10.80
6319 95 200 45 34396 26752 12.47
6320 100 215 47 38892 31698 15.40
6321 105 225 49 41365 34396 17.71
6322 110 240 50 46086 40465 20.99
6324 120 260 55 47659 42714 28.16
6326 130 280 58 51256 48559 40.26
6328 140 300 62 57326 55078 49.06
6330 150 320 65 64070 67442 58.74

 

6700 Series

Size Inner Dimension Outer Dimension Width Dynamic (Cr) Static (Cor) Weight (lb)
6701 12 18 4 205 119 0.004
6702 15 21 4 191 110 0.005
6703 17 23 4 216 137 0.006
6704 20 27 4 232 162 0.010
6705 25 32 4 246 187 0.015
6706 30 37 4 263 220 0.018
6707 35 44 5 416 366 0.021

 

6800 Series

Size Inner Dimension Outer Dimension Width Dynamic (Cr) Static (Cor) Weight (lb)
6800 10 19 5 411 208 0.011
6801 12 21 5 432 234 0.0132
6802 15 24 5 468 286 0.0154
6803 17 26 5 632 387 0.0176
6804 20 32 7 899 555 0.0418
6805 47 37 7 967 663 0.0484
6806 30 42 7 1057 821 0.0572
6807 35 47 7 1102 910 0.0638
6808 40 52 7 1113 944 0.0726
6809 45 58 7 1394 1214 0.088
6810 50 65 7 1484 1371 0.1144
6811 55 72 9 1978 1821 0.1826
6812 60 78 10 2585 2383 0.2288
6813 65 85 10 2675 2585 0.2772
6814 70 90 10 2720 2675 0.2948
6815 75 95 10 2810 2900 0.3124
6816 80 100 10 2855 2990 0.33
6817 85 110 13 4204 4271 0.5852
6818 90 115 13 4271 4429 0.6138
6819 95 120 13 4339 4429 1.551
6820 100 125 13 4406 4766 0.6798
6821 105 130 13 4451 5373 0.7128
6822 110 140 16 6317 6902 1.3332
6824 120 150 16 6519 7419 1.441
6826 130 165 18 8295 9262 2.0658
6828 140 175 18 8588 9981 2.2
6830 150 190 20 10746 12342 3.08

 

6900 Series

Size Inner Dimension Outer Dimension Width Dynamic (Cr) Static (Cor) Weight (lb)
6900 10 22 6 652 326 0.010
6901 12 24 6 967 506 0.011
6902 15 28 7 1034 573 0.017
6903 17 30 7 1428 832 0.018
6904 20 37 9 1574 1023 0.036
6905 47 42 9 1630 1124 0.041
6906 30 47 9 2450 1742 0.045
6907 35 55 10 3080 2237 0.073
6908 40 62 12 3170 2450 0.112
6909 45 68 12 3260 2630 0.132
6910 50 72 12 3732 3170 0.133
6911 55 80 13 4541 3889 0.185
6912 60 85 13 3912 3619 0.104
6913 65 90 13 5328 4766 0.211
6914 70 100 16 5485 5081 0.342
6915 75 105 16 5620 5395 0.363
6916 80 110 16 7171 6654 0.382
6917 85 120 18 7374 7104 0.535
6918 90 125 18 7576 7531 0.565
6919 95 130 18 10116 9419 0.705
6920 100 140 20 10454 10071 0.960
6921 105 145 20 10768 10746 1.000
6922 110 150 20 12859 12792 1.040
6924 120 165 22 15647 15737 1.410
6926 130 180 24 16029 16816 1.860
6928 140 190 24 20997 21199 1.980
6930 150 210 28 21000 326 3.050

 

Why So Many Sizes?

 

As stated before, size depends on the shaft size and application requirements. Bearing size can greatly impact the performance and capabilities of a ball bearing; therefore different sizes are used in different industries.

 

Generally, smaller ball bearings have more limited load capacities. They are used in applications where space-efficiency is more important than load capacity. Miniature bearings, often constructed as precision ball bearings, are used for extremely small applications, such as medical instrumentation, robotics, or semiconductor equipment. On the other hand, larger bearings have greater load capacities. They are used for heavy-duty industries such as agriculture machinery, mining and drilling equipment, or heavy power tools. Many manufacturers also offer custom bearing size options for very specific applications that have unique requirements.

How to Measure Ball Bearings

 

It is not uncommon that the bearing identification number may be illegible or worn completely after long term use, requiring a bearing to be measured manually. This can easily be done using a vernier caliper to easily provide accurate measurements. If this tool is not available, measurements can be taken carefully using a ruler.

 

  1. First measure the inner diameter by inserting the outside anvils of the caliper into the inner ring of the bearing. Make sure it fits just from edge to edge, and is not tight or applying pressure on the bearing. Or, measure the inner circle of the bearing from end to end with a ruler.
  2. Measure the outer diameter by placing the bearing in the jaws of the caliper until it fits perfectly. Or, measure the bearing from one outside edge to the other using a ruler.
  3. Repeat the last step for the width of the bearing.
  4. Use a bearing size chart to find the bearing series number.

 

If you are looking for a proper bearing match or replacement, you will also need to pay attention to some other important aspects of the bearing number to find the correct bearing. The suffix can contain a few details about the bearing design and features:

 

  • Shield or seal type: The bearing may have one or two shields or seals that can be metal, rubber, or snap ring
  • Cage material: The cage can be made of brass, polyamide, steel, or other materials.
  • Internal clearance level: The bearing may require a specific amount of clearance. Usually, C2 means little clearance, no marking means standard clearance, and C3 or higher means larger clearances for bearings operating under high temperatures.
  • Grease temperature: The bearing may require grease with certain temperature capabilities.
  • Outside coatings: The inner or outer ring may be coated with a substance such as aluminum oxide for resistance to certain conditions or environments.

 

Each manufacturer may use unique suffix codes; it is best to look up a suffix guide to find the correct bearing match or replacement.

 

 

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How Do Ball Bearings Work