Machine Tool Spindle Bearings

Machine Tool Spindle Bearings

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  1. Spindle Bearing Selection
  2. Spindle Bearing Nomenclature
  3. Spindle Bearing History
  4. Spindle Bearing Dimensions
  5. 7000 Series Spindle Bearings
  6. 7000 Series Spindle Bearing Pairs
  7. 7200 Series Spindle Bearings
  8. 7200 Series Spindle Bearing Pairs
  9. 7900 Series Spindle Bearings
  10. 7900 Series Spindle Bearing Pairs

Our ultra-precision premium spindle bearings are found in some of the most precise applications in the world, such as; machine tools, medical equipment, aerospace, and textile applications. They are classified as an angular contact bearing type with standard contact angles being 15° or 25° and are made from a high-quality anti-corrosive steel material. Our spindle bearings excel in running accuracy, axial load capacity, as well as rotational speed.

We supply single spindle bearings as well as a duplex, triplex, and quadplex bearing pairs. Additionally, balls can be made from steel or ceramics depending on the application requirements. For additional information or to get a quote contact our customer support team and we will be happy to assist you.

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Spindle Bearing Selection

Spindle Bearing Nomenclature


Depending on the manufacture there are different nomenclatures and part numbers associated with spindle bearings, the above reference is our standard spindle bearing nomenclature but we can interchange with any brand!

Spindle Bearing History


Spindle bearings were first invented in 1907, then patented in 1912, and were used for wood carving machines that needed to rotate efficiently at very high speeds. They were then placed into industrial machine tools such as lathes, milling machines, and more. From there a multitude of manufactures began production of their own spindle bearings and throughout the years' continual improvements to precision, metallurgy, and greases/ lubricants have brought these high-precision bearings to what they are now.

Spindle Bearing Dimensions

The below charts show our stand spindle ball bearing dimensions and sizes. For additional sizes and options contact our customer support team for assistance.

7000 Series Spindle Bearings

Bearing Size (d) (D) (B) Dynamic Load (LBS) Static Load (LBS) Limiting Speed Grease Limiting Speed Oil
7004 CT.P4.UL 20 42 12 2630 1596 36000 53000
7005 CT.P4.UL 25 47 12 2900 1933 30000 45000
7006 CT.P4.UL 30 55 13 3417 2315 26000 40000
7007 CT.P4.UL 35 62 14 4316 3080 22000 36000
7008 CT.P4.UL 40 68 15 4811 3777 20000 34000
7009 CT.P4.UL 45 75 16 5710 4586 18000 30000
7010 CT.P4.UL 50 80 16 5845 4901 17000 28000
7011 CT.P4.UL 55 90 18 7059 6182 15000 24000
7012 CT.P4.UL 60 95 18 7418 6901 14000 22000
7013 CT.P4.UL 65 100 18 7553 7284 13000 20000
7014 CT.P4.UL 70 110 20 10880 10116 12000 19000
7015 CT.P4.UL 75 115 20 11128 10745 12000 19000
7016 CT.P4.UL 80 125 22 13196 12409 11000 18000
7017 CT.P4.UL 85 130 22 13533 13173 10000 17000
7018 CT.P4.UL 90 140 24 16096 15511 9500 16000
7019 CT.P4.UL 95 145 24 16523 16455 9000 15000
7020 CT.P4.UL 100 150 24 16927 17355 8500 14000
7021 CT.P4.UL 105 160 26 18546 19243 8000 13000
7022 CT.P4.UL 110 170 28 21491 22098 7500 12000
7024 CT.P4.UL 120 180 28 23547 24486 6700 10000

7000 Series Spindle Bearing Pairs

Bearing Size (d) (D) (B) Dynamic Load (LBS) Static Load (LBS) Limiting Speed Grease Limiting Speed Oil
7004 CTBP4DUL 20 42 24 4261 3192 28800 42400
7005 CTBP4DUL 25 47 24 4698 3866 24000 36000
7006 CTBP4DUL 30 55 26 5536 4630 20800 32000
7007 CTBP4DUL 35 62 28 6992 6160 17600 28800
7008 CTBP4DUL 40 68 30 7794 7554 16000 27200
7009 CTBP4DUL 45 75 32 9250 9172 14400 24000
7010 CTBP4DUL 50 80 32 9469 9802 13600 22400
7011 CTBP4DUL 55 90 36 11436 12364 12000 19200
7012 CTBP4DUL 60 95 36 12017 13802 11200 17600
7013 CTBP4DUL 65 100 36 12236 14568 10400 16000
7014 CTBP4DUL 70 110 40 17626 20232 9600 15200
7015 CTBP4DUL 75 115 40 18027 21490 9600 15200
7016 CTBP4DUL 80 125 44 21378 24818 8800 14400
7017 CTBP4DUL 85 130 44 21923 26346 8000 13600
7018 CTBP4DUL 90 140 48 26076 31022 7600 12800
7019 CTBP4DUL 95 145 48 26767 32910 7200 12000
7020 CTBP4DUL 100 150 48 27422 34710 6800 11200
7021CTBP4DUL 105 160 52 30045 38486 6400 10400
7022 CTBP4DUL 110 170 56 34815 44196 6000 9600

7200 Series Spindle Bearings

Bearing Size (d) (D) (B) Dynamic Load (LBS) Static Load (LBS) Limiting Speed Grease Limiting Speed Oil
7204 CT.P4.UL 20 47 14 3484 2001 32000 48000
7205 CT.P4.UL 25 52 15 3934 2495 28000 43000
7206 CT.P4.UL 30 62 16 5463 3574 24000 38000
7207 CT.P4.UL 35 72 17 7216 4878 20000 34000
7208 CT.P4.UL 40 80 18 8183 5665 18000 30000
7209 CT.P4.UL 45 85 19 9644 6969 17000 28000
7210 CT.P4.UL 50 90 20 10094 7643 16000 26000
7211 CT.P4.UL 55 100 21 12476 9621 14000 22000
7212 CT.P4.UL 60 110 22 15062 11802 13000 20000
7213 CT.P4.UL 65 120 23 15669 12948 12000 19000
7214 CT.P4.UL 70 125 24 16388 13376 11000 18000
7215 CT.P4.UL 75 130 25 17062 14458 11000 18000
7216 CT.P4.UL 80 140 26 19265 16995 10000 17000
7217 CT.P4.UL 85 150 28 21693 18906 9000 15000
7218 CT.P4.UL 90 160 30 25088 22075 8500 14000
7219 CT.P4.UL 95 170 32 28635 25492 8000 13000
7220 CT.P4.UL 100 180 34 32506 29179 7500 12000
7221 CT.P4.UL 105 190 36 36530 33113 7000 11000
7222 CT.P4.UL 110 200 38 39790 37294 6700 10000
7224 CT.P4.UL 120 215 40 44600 43207 6000 9000

7200 Series Spindle Bearing Pairs

Bearing Size (d) (D) (B) Dynamic Load (LBS) Static Load (LBS) Limiting Speed Grease Limiting Speed Oil
7204 CT.P4.UL 20 47 14 3484 2001 32000 48000
7205 CT.P4.UL 25 52 15 3934 2495 28000 43000
7206 CT.P4.UL 30 62 16 5463 3574 24000 38000
7207 CT.P4.UL 35 72 17 7216 4878 20000 34000
7208 CT.P4.UL 40 80 18 8183 5665 18000 30000
7209 CT.P4.UL 45 85 19 9644 6969 17000 28000
7210 CT.P4.UL 50 90 20 10094 7643 16000 26000
7211 CT.P4.UL 55 100 21 12476 9621 14000 22000
7212 CT.P4.UL 60 110 22 15062 11802 13000 20000
7213 CT.P4.UL 65 120 23 15669 12948 12000 19000
7214 CT.P4.UL 70 125 24 16388 13376 11000 18000
7215 CT.P4.UL 75 130 25 17062 14458 11000 18000
7216 CT.P4.UL 80 140 26 19265 16995 10000 17000
7217 CT.P4.UL 85 150 28 21693 18906 9000 15000
7218 CT.P4.UL 90 160 30 25088 22075 8500 14000
7219 CT.P4.UL 95 170 32 28635 25492 8000 13000
7220 CT.P4.UL 100 180 34 32506 29179 7500 12000
7221 CT.P4.UL 105 190 36 36530 33113 7000 11000
7222 CT.P4.UL 110 200 38 39790 37294 6700 10000
7224 CT.P4.UL 120 215 40 44600 43207 6000 9000

7900 Series Spindle Bearings

Bearing Size (d) (D) (B) Dynamic Load (LBS) Static Load (LBS) Limiting Speed Grease Limiting Speed Oil
7905 CT.P4.UL 25 42 9 1843 1304 32000 48000
7906 CT.P4.UL 30 47 9 1866 1416 28000 43000
7907 CT.P4.UL 35 55 10 3192 2450 24000 38000
7908 CT.P4.UL 40 62 16 3260 2653 22000 36000
7909 CT.P4.UL 45 68 12 3305 2832 19000 32000
7910 CT.P4.UL 50 72 12 3372 3012 18000 30000
7911CT.P4.UL 55 80 13 4159 3799 16000 26000
7912 CT.P4.UL 60 85 13 4361 4181 15000 24000
7913 CT.P4.UL 65 90 13 4429 4384 14000 22000
7914 CT.P4.UL 70 100 16 5373 5418 13000 20000
7915 CT.P4.UL 75 105 16 6587 6811 12000 19000
7916 CT.P4.UL 80 110 16 7756 8093 12000 19000
7917 CT.P4.UL 85 120 18 8992 9487 11000 18000
7918 CT.P4.UL 90 125 18 9127 9914 10000 17000
7919 CT.P4.UL 95 130 18 9262 10273 9500 16000
7920 CT.P4.UL 100 140 20 11597 12656 9000 15000
7921 CT.P4.UL 105 145 20 11802 13196 8500 14000
7922 CT.P4.UL 110 150 20 11982 13690 8000 13000
7924 CT.P4.UL 120 165 22 15129 17602 7000 11000

7900 Series Spindle Bearing Pairs

Bearing Size (d) (D) (B) Dynamic Load (LBS) Static Load (LBS) Limiting Speed Grease Limiting Speed Oil
7905 CTBP4DUL 25 42 9 2986 2608 25600 38400
7906 CTBP4DUL 30 47 9 3023 2832 22400 34400
7907 CTBP4DUL 35 55 10 5171 4900 19200 30400
7908 CTBP4DUL 40 62 16 5281 5306 17600 28800
7909 CTBP4DUL 45 68 12 5354 5664 15200 25600
7910 CTBP4DUL 50 72 12 5463 6024 14400 24000
7911 CTBP4DUL 55 80 13 6738 7598 12800 20800
7912 CTBP4DUL 60 85 13 7065 8362 12000 19200
7913 CTBP4DUL 65 90 13 7175 8768 11200 17600
7914 CTBP4DUL 70 100 16 8704 10836 10400 16000
7915 CTBP4DUL 75 105 16 10671 13622 9600 15200
7916 CTBP4DUL 80 110 16 12565 16186 9600 15200
7917 CTBP4DUL 85 120 18 14567 18974 8800 14400
7918 CTBP4DUL 90 125 18 14786 19828 8000 13600
7919 CTBP4DUL 95 130 18 15004 20546 7600 12800
7920 CTBP4DUL 100 140 20 18787 25312 7200 12000
7921 CTBP4DUL 105 145 20 19119 26392 6800 11200
7222 CTBP4DUL 110 150 20 19411 27380 6400 10400