Product Description

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.
The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from 1 raceway to another, and a line perpendicular to the bearing axis.

     The most commonly used designs are:

  • single row angular contact ball bearings.
  • double row angular contact ball bearings.
  • four-point contact ball bearings.

 

Part No. d/mm D/mm B/mm Load Rating(KN) Limited  Speed(r/min) Load Rating(KN) Limited  Speed(r/min)
Cr/KN Cor/KN Grease  Oil  Cr/KN Cor/KN Grease  Oil 
718 serie       α=15°(C) α=25°(AC)
71800 10 19 5 1.8 1.1 75000 120000 1.7 1.1 70000 110000
71801 12 21 5 2 1.4 70000 110000 1.9 1.3 63000 95000
71802 15 24 5 2.2 1.8 60000 90000 2.1 1.7 53000 80000
71803 17 26 5 2.3 1.9 53000 80000 2.1 1.8 50000 75000
71804 20 32 7 3.9 3.4 45000 67000 3.7 3.2 40000 60000
71805 25 37 7 4.2 4.1 38000 56000 3.9 3.9 34000 50000
71806 30 42 7 4.4 4.8 32000 48000 4.1 4.5 28000 43000
71807 35 47 7 4.6 5.5 26000 40000 4.3 5.2 24000 38000
71815 75 95 10 14.2 21.7 12000 19000 13.3 20.5 11000 18000
71816 80 100 10 14.5 23.1 11000 18000 13.6 21.8 9500 16000
71817 85 110 13 21.5 32.2 10000 17000 20.2 30.5 9000 15000
71818 90 115 13 21.7 33.5 9500 16000 20.4 31.6 8500 14000
71819 95 120 13 21.9 34.7 9000 15000 20.6 32.8 8500 14000
71820 100 125 13 22.5 37 8500 14000 21.2 34.9 8000 13000
71821 105 130 13 22.7 38.3 8500 14000 21.3 36.1 8000 13000
71822 110 140 16 31.8 51.6 8000 13000 29.9 48.7 7500 12000
71824 120 150 16 33.1 56.9 7000 11000 31.1 53.7 6700 10000
71826 130 165 18 38.7 67.6 6700 10000 36.3 63.8 6000 9000
71828 140 175 18 44.8 79.2 6000 9000 42 74.7 5600 8500
71830 150 190 20 51.2 92 5600 8500 48 86.8 5000 7500
71832 160 200 20 52.4 97.7 5000 7500 49.2 92.2 4800 7000
71834 170 215 22 66.5 123.4 4800 7000 62.4 116.5 4300 6300
71836 180 225 22 83.8 151.6 4800 7000 78.6 143 4300 6300
71838 190 240 24 100 179 4500 6700 94.4 169.2 4000 6000
71840 200 250 24 102.5 189.3 4300 6300 96.2 178.6 3800 5600
71844 220 270 24 106.4 209.3 3800 5600 99.8 197.4 3400 5000
71848 240 300 28 145 277 3400 5000 136 261 3000 4500
71852 260 320 28 148.8 299.3 3100 4600 139.6 282.3 2700 4100
71856 280 350 33 182 363.8 2800 4100 170.8 343.3 2400 3700

 

Part No. d/mm D/mm B/mm Load Rating(KN) Limited  Speed(r/min) Load Rating(KN) Limited  Speed(r/min)
Cr/KN Cor/KN Grease  Oil  Cr/KN Cor/KN Grease  Oil 
719 serie       α=15°(C) α=25°(AC)
71907 35 55 10 11 10.9 26000 40000 10.4 10.3 20000 34000
H71907 35 55 10 7.7 5.4 36000 53000 7.4 5.1 30000 45000
H71907/HQ1 35 55 10 7.7 5.4 40000 60000 7.4 5.1 34000 50000
71908 40 62 12 14 14.2 20000 34000 13.3 13.5 18000 30000
H71908 40 62 12 9.8 7 30000 45000 9.3 6.6 26000 40000
H71908/HQ1 40 62 12 9.8 7 34000 50000 9.3 6.6 28000 43000
71909 45 68 12 14.7 16.1 18000 30000 13.9 15.2 17000 28000
H71909 45 68 12 10.3 7.7 26000 40000 9.7 7.3 22000 36000
H71909/HQ1 45 68 12 10.3 7.7 28000 43000 9.7 7.3 26000 40000
71910 50 72 12 19 21.2 17000 28000 17.9 20.1 15000 24000
H71910   72 12 13.2 10.2 22000 36000 12.5 9.5 19000 32000
H71910/HQ1 50 72 12 13.2 10.2 26000 40000 12.5 9.5 22000 36000
71911 55 80 13 23.7 27.4 15000 24000 22.4 26 14000 22000
H71911 55 80 13 16.2 12.5 19000 32000 15.2 11.8 16000 26000
H71911/HQ1 55 80 13 16.2 12.5 22000 36000 15.2 11.8 22000 36000
71912 60 85 13 24.8 30.3 14000 22000 23.3 28.7 13000 20000
H71912 60 85 13 16.5 13.8 18000 30000 15.8 13.2 15000 24000
H71912/HQ1 60 85 13 16.5 13.8 19000 32000 15.8 13.2 20000 34000
71913 65 90 13 25.1 31.9 13000 20000 23.6 30.2 12000 19000
H71913 65 90 13 16.8 14.5 17000 28000 16.2 13.8 15000 24000
H71913/HQ1 65 90 13 16.8 14.5 19000 32000 16.2 13.8 17000 28000
71914 70 100 16 34.5 43.4 12000 19000 32.6 41.2 11000 18000
H71914 70 100 16 20.8 17.8 16000 26000 19.8 16.8 13000 20000
H71914/HQ1 70 100 16 20.8 17.8 19000 32000 19.8 16.8 17000 28000
71915 75 105 16 25 45.6 11000 18000 33 43.2 95000 16000
H71915 75 105 16 21.8 19.2 15000 24000 20.5 18.2 13000 20000
H71915/HQ1 75 105 16 21.8 19.2 17000 28000 20.5 18.2 15000 24000
71916 80 110 16 35.5 47.8 10000 17000 33.5 45.3 9000 15000
H71916 80 110 16 22.5 20.8 14000 22000 21.2 19.5 12000 19000
H71916/HQ1 80 110 16 22.5 20.8 16000 26000 21.2 19.5 14000 24000
71917   120 18 46.5 61.9 9500 16000 43.8 58.6 8500 14000
H71917 85 120 18 26.2 24.2 13000 20000 24.8 22.8 11000 18000
H71917/HQ1 85 120 18 26.2 24.2 15000 24000 24.8 22.8 13000 20000
71918 90 125 18 47.2 64.8 9000 15000 44.5 61.4 8000 13000
H71918 90 125 18 27.2 26.2 13000 20000 25.5 24.5 11000 18000
H71918/HQ1 90 125 18 27.2 26.2 15000 24000 25.5 24.5 13000 20000
71919 95 130 18 47.9 67.8 9000 15000 45.2 64.1 8000 13000
H71919 95 130 18 27.2 26.8 12000 19000 25.8 25.5 11000 18000
H71919/HQ1 95 130 18 27.2 26.8 14000 22000 25.8 25.5 13000 20000
71920 100 140 20 60.4 84.4 8500 14000 56.9 79.9 8000 13000
H71920 100 140 20 40.2 37.5 11000 18000 37.8 35.5 9000 15000
H71920/HQ1 100 140 20 40.2 37.5 13000 20000 37.8 35.5 11000 18000
71921 105 145 20 61.4 88.2 8000 13000 57.8 83.5 7500 12000
H71921 105 145 20 40.8 39.2 10000 17000 38.5 36.8 8500 14000
H71921/HQ1 105 145 20 40.8 39.2 12000 19000 38.5 36.8 10000 17000
71922 110 150 20 62.3 91.9 7500 12000 58.7 87 7000 11000
H71922 110 150 20 41.2 40.5 9000 15000 39.2 38.2 7500 12000
H71922/HQ1 110 150 20 41.2 40.5 11000 18000 39.2 38.2 9500 16000
71924 120 165 22 73.7 107.6 7000 11000 69.5 101.9 6700 10000
H71924 120 165 22 43.2 44.8 8500 14000 40.5 42.5 7500 12000
H71924/HQ1 120 165 22 43.2 44.8 10000 17000 40.8 42.5 9000 15000
71926 130 180 24 76.3 117.1 6700 10000 71.9 110.9 6000 9000
H71926 130 180 24 53.2 56.5 8000 13000 50.2 53.5 7500 12000
H71926/HQ1 130 180 24 53.2 56.5 9000 15000 50.2 53.5 8000 14000
71928 140 190 24 78.9 126.4 6000 9000 74.4 119.7 5600 8500
H71928 140 190 24 53.8 59.2 7000 11000 50.8 55.8 6700 10000
H71928/HQ1 140 190 24 53.8 59.2 8000 13000 50.8 55.8 7500 12000
71930 150 210 28 118.2 175.1 5600 8500 111.4 165.8 5000 7500
H71930 150 210 28 65.2 72.8 6700 10000 61.5 68.8 6000 9000
H71930/HQ1 150 210 28 65.2 72.8 7500 12000 61.5 68.8 7000 11000
71932 160 220 28 123.6 191.2 5000 7500 116.5 181.1 4800 7000
H71932 160 220 28 66.2 75.8 6000 9000 62.5 71.5 5600 8500
H71932/HQ1   220 28 66.2 75.8 7000 11000 62.5 71.5 6700 10000
71934 170 230 28 125.7 200 4800 7000 118.5 189.4 4300 6300
H71934 170 230 28 66.8 78.8 5600 8500 63.2 74.5 5000 7500
H71934/HQ1 170 230 28 66.8 78.8 6700 10000 63.2 74.2 6000 9000
71936 180 250 33 159.7 249.1 4500 6700 150.6 235.9 4000 6000
H71936 180 250 33 79.5 95.2 5000 7500 75.2 89.8 4800 7000
H71936/HQ1 180 250 33 79.5 95.2 6000 9000 75.2 89.8 5600 8500
71938 190 260 33 162.8 260.8 4300 6300 153.5 247 3800 5600
H71938 190 260 33 80.5 98.5 4800 7000 76.2 93.2 4300 6300
H71938/HQ1 190 260 33 80.5 98.5 5600 8500 76.2 93.2 5000 7500
71940 200 280 38 198.4 311.4 3800 5600 187.1 294.9 3600 5300
H71940 200 280 38 82.8 105.5 4500 6700 78.2 99.5 4000 6000
H71940/HQ1 200 280 38 82.8 105.5 5000 7500 78.2 99.5 4500 6700
71944 220 300 38 206.6 341.1 3600 5300 194.8 323 3200 4800
H71944 220 300 38 96.9 125.4 4300 6300 91.5 118.4 3800 5600
H71944/HQ1 220 300 38 96.9 125.4 5000 7500 91.5 118.4 4300 6300
71948 240 320 38 219.2 384.2 3200 4800 206.7 363.8 3000 4500
H71948 240 320 38 153 216 3900 5800 146 200 3500 5200
H71948/HQ1 240 320 38 153 216 4500 6500 146 200 4000 5800
71952 260 360 46 284.6 528.8 3000 4500 268.3 500.8 2600 4000
71956 280 380 46 288.7 554.6 2600 4000 272.2 525.5 2200 3600

 

Mod. No. d D Height Cr Cor Grease Oil Weight
(mm) (mm) (mm) (kN) (kN) (r/min) (r/min) (kg)  
7571C 50 80 16 26 21.9 13000 17000 0.29
7571AC 50 80 16 23.6 20.1 9200 11000 0.29
7210C 50 90 20 42.8 31.8 12000 16000 0.485
7210AC 50 90 20 39.4 41.3 8500 11000 0.485
7210B 50 90 20 37.535.7 26.7 6400 8500 0.485
7310B 50 110 27 64.4 44.3 5500 7300 1.14
7410B 50 130 31 90.2 60.4 4400 6000 1.92
7011C 55 90 18 34.1 28.6 11000 15000 0.42
7011AC 55 90 18 31.1 26.3 8300 10000 0.42
7211C 55 100 21 52.9 40.2 11000 14000 0.635
7211AC 55 100 21 48.7 37.1 7600 9500 0.635
7211B 55 100 21 44.1 33.8 5700 7600 0.635
7311B 55 120 29 74.3 52 5000 6700 1.45
7012C 60 95 18 35 30.6 11000 14000 0.45
7012AC 60 95 18 31.9 28.1 7700 9700 0.45
7212C 60 110 22 64 49.5 9500 13000 0.82
7212AC 60 110 22 58.9 45.7 6900 8600 0.82
7212B 60 110 22 53.4 41.6 5100 6900 0.82
7312B 60 130 31 84.9 60.3 4600 6200 1.81
7412B 60 150 35 119 86.7 3700 5100 2.85
7013C 65 100 18 37.1 34.3 10000 13000 0.47
7013AC 65 100 18 33.7 31.4 7200 9000 0.47
7213C 65 120 23 73.1 58.7 8900 12000 1.02
7213AC 65 120 23 67.3 54.2 6400 8000 1.02
7213B 65 120 23 60.9 49.3 4800 6400 1.02
7313B 65 140 33 96.1 69.3 4300 5800 2.22
7014C 70 110 20 46.9 43 9200 12000 0.66
7014AC 70 110 20 42.7 39.4 6600 8300 0.66
7214C 70 125 24 75.9 60.2 8400 11000 1.12
7214AC 70 125 24 69.8 55.6 6100 7600 1.12
7214B 70 125 24 63.2 50.6 4600 6100 1.12
7314B 70 150 35 108 78.9 4000 5400 2.7
7015C 75 115 20 48 45.6 8700 11000 0.69
7015AC 75 115 20 43.6 41.7 6300 7800 0.69
7215C 75 130 25 86.1 70.6 8000 11000 1.23
7215AC 75 130 25 79.2 65.2 5800 7200 1.23
7215B 75 130 25 71.7 59.3 4300 5800 1.23
7915B 75 160 37 125 98.5 3400 4500 3.3
7016C 80 125 22 58.7 55.3 8000 11000 0.93
7016AC 80 125 22 53.4 50.6 5800 7200 0.93
7216C 80 140 26 92.8 77.5 7500 9900 1.5
7216AC 80 140 26 85.3 71.5 5400 6700 1.5
7216B 80 140 26 77.1 65 4000 5400 1.5
7316B 80 170 39 127 100 3500 4700 3.85
7017C 85 130 22 60.1 58.7 7600 10000 0.97
7017AC 85 130 22 54.6 53.7 5500 6800 0.97
7217C 85 150 28 107 90.6 7000 9200 1.87
7217AC 85 150 28 98.6 83.6 5000 6300 1.87
7217B 85 150 28 89.2 76 3800 5000 1.87
7317B 85 180 41 137 112 3300 4400 4.53
7018C 90 140 24 71.7 69.1 7100 9400 1.26
7018AC 90 140 24 65.2 63.3 5100 6400 1.26
7218C 90 160 30 123 105 6500 8600 2.3
7218AC 90 160 30 113 96.7 4700 5900 2.3
7218B 90 160 30 102 88 3500 4700 2.3
7318B 90 190 43 148 124 3100 4200 5.3
7019C 95 145 24 73.4 73.4 6700 8900 1.32
7019AC 95 145 24 66.6 67.1 4800 6000 1.32
7219C 95 170 32 133 112 6100 8100 2.78
7219AC 95 170 32 122 103 4400 5500 2.78
7219B 95 170 32 111 94 3300 4400 2.78
7319B 95 200 45 158 137 3000 4000 6.12

 

7000 Series – Angular Contact Ball Bearing
Angular single row ball bearing have a 40° contact angle
Item No. Dimensions Basic Load Ratings (N) Speed (1/min) Mass
(mm) Dynamic Static (kg)
d D B Cr C0r Limiting Reference approx.
7004 20 42 12 13,400 7,500 18,000 0.061
7005 25 47 12 15,000 9,300 16,000 0.071
7006 30 55 13 18,300 12,500 14,000 0.109
7007 35 62 14 22,400 16,000 12,000 0.14
7008 40 68 15 26,000 18,600 10,000 0.17
 
7200 Series – Angular Contact Ball Bearing
Angular single row ball bearing have a 40° contact angle
Item No. Dimensions Basic Load Ratings (N) Speed (1/min) Mass
(mm) Dynamic Static (kg)
d D B Cr C0r Limiting Reference approx.
7200 10 30 9 5,000 2,600 32,000 26,000 0.033
7201 12 32 10 6,950 3,550 28,000 26,000 0.035
7202 15 35 11 8,000 4,450 24,000 22,000 0.044
7203 17 40 12 10,000 5,700 20,000 20,000 0.064
7204 20 47 14 13,400 7,800 18,000 18,000 0.103
7205 25 52 15 14,600 9,300 16,000 16,000 0.127
7206 30 62 16 20,400 14,100 13,000 13,000 0.197
7207 35 72 17 27,000 19,000 11,000 12,000 0.29
7208 40 80 17 32,000 23,500 9,500 10,000 0.367
7209 45 85 19 36,000 27,000 8,500 9,500 0.411
7210 50 90 20 37,500 28,500 8,000 9,000 0.456
7211 55 100 21 46,500 38,500 7,000 8,500 0.604
7212 60 110 22 56,000 45,000 6,300 7,500 0.777
7213 65 120 23 64,000 55,000 6,000 7,000 1.08
7214 70 125 24 69,500 62,000 5,600 6,700 1.17
7215 75 130 25 68,000 62,000 5,300 6,700 1.25
7216 80 140 26 80,000 72,000 5,000 6,000 1.53
7217 85 150 28 90,000 86,000 4,500 6,000 1.94
7218 90 160 30 106,000 98,000 4,300 5,600 2.38
7219 95 170 32 116,000 106,000 4,000 5,300 2.64
7220 100 180 34 137,000 132,000 3,800 5,000 3.45
7221 105 190 36 144,000 142,000 6,000 4,800 4.18
7222 110 200 38 155,000 154,000 3,600 4,500 4.7
7224 120 215 40 169,000 178,000 3,400 4,300 5.31
7226 130 230 40 186,000 204,000 3,200 3,800 6.12
7228 140 250 42 198,000 231,000 4,800 3,400 8.55
7230 150 270 45 227000 275000 4,500 3000 10.9
7232 160 290 48 236,000 280,000 4,300 2,800 13.5
7234 170 310 52 265,000 325,000 3,800 2,600 16.7
 
7300 Series – Angular Contact Ball Bearing
Angular single row ball bearing have a 40° contact angle
Item No. Dimensions Basic Load Ratings (N) Speed (1/min) Mass
(mm) Dynamic Static (kg)
d D B Cr C0r Limiting Reference approx.
7301 12 37 12 10.600 5.300 24.000 19.000 0,066
7302 15 42 13 13.200 7.200 20.000 17.000 0,081
7303 17 47 14 16.300 9.000 18.000 15.000 0,11
7304 20 52 15 19.000 11.100 17.000 13.000 0,143
7305 25 62 17 26.000 15.800 14.000 11.000 0,242
7306 30 72 19 33.000 2.210 11.000 10.000 0,341
7307 35 80 21 40.000 27.500 9.500 9.000 0,447
7308 40 90 23 50.000 34.500 8.500 8.500 0,646
7309 45 100 25 61.000 43.000 7.500 7.500 0,813
7310 50 110 27 70.000 50.000 7.000 7.000 1,13
7311 55 120 29 80.000 61.000 6.300 6.700 1,46
7312 60 130 31 90.000 69.000 5.600 6.300 1,74
7313 65 140 33 103.000 82.000 5.300 6.000 2,12
7314 70 150 35 117.000 93.000 5.000 5.600 2,58
7315 75 160 37 130.000 107.000 4.500 5.300 3,29
7316 80 170 39 144.000 124.000 4.300 4.800 3,66
7317 85 180 41 155.000 138.000 4.000 4.500 4,4
7318 90 190 43 167.000 155.000 3.800 4.300 5,14
7319 95 200 45 176.000 167.000 3.800 4.000 5,93
7320 100 215 47 199.000 197.000 3.600 3.600 7,16
7321 105 225 49 209.000 214.000 5.300 3.400 9,0
7322 110 240 50 232.000 245.000 3.400 3.200 9,97
7324 120 260 55 255.000 285.000 3.200 3.000 12,5
7326 130 280 58 285.000 325.000 3.000 2.600 15,1
7328 140 300 62 300.000 345.000 4.300 2.400 20,5
7330 150 320 65 325.000 390.000 3.800 2.200 24,8
7332 160 340 68 360.000 450.000 3.600 2.000 29,0
7334 170 360 72 405.000 530.000 3.200 1.900 34,4

 

 

 

Part No. d/mm D/mm B/mm Load Rating(KN) Limited  Speed(r/min) Load Rating(KN) Limited  Speed(r/min)
Cr/KN Cor/KN Grease  Oil  Cr/KN Cor/KN Grease  Oil 
72 serie       α=15°(C) α=25°(AC)
7200 10 30 9 6.5 3.8 56000 85000 6.3 3.7 53000 80000
7201 12 32 10 7.2 4.5 53000 80000 6.9 4.3 48000 70000
7202 15 35 11 9.1 5.8 48000 70000 8.8 5.6 43000 63000
7203 17 40 12 11.3 7.4 40000 60000 10.9 7.1 38000 56000
7204 20 47 14 13.1 9.6 34000 50000 12.6 9.2 30000 45000
7205 25 52 15 16.8 13.1 30000 45000 16.1 12.5 26000 40000
7206 30 62 16 23.4 18.8 24000 38000 22.3 18 20000 34000
7207 35 72 17 25.8 22.9 18000 30000 24.5 21.9 17000 28000
7208 40 80 18 34.1 30.9 17000 28000 32.5 29.5 15000 24000
7209 45 85 19 35.5 33.8 16000 26000 33.8 32.3 14000 22000
7210 50 90 20 43.3 40.6 15000 24000 41.3 38.7 14000 22000
7211 55 100 21 53.6 51.1 14000 22000 51.1 48.8 13000 20000
7212 60 110 22 55.8 56.2 12000 19000 53 53.5 11000 18000
7213 65 120 23 67.5 69 11000 18000 64.2 65.8 9500 16000
7214 70 125 24 70.2 74.6 10000 17000 66.6 71.1 9000 15000
7215 75 130 25 72.7 80.2 9500 16000 68.9 76.3 8500 14000
7216 80 140 26 86.5 96.5 9000 15000 82.1 91.9 8000 13000
7217 85 150 28 97.4 107.5 8500 14000 92.5 102.4 7500 12000
7218 90 160 30 121.9 131.3 8000 13000 115.8 124.6 7000 11000
7219 95 170 32 128.9 145.1 7500 12000 122.5 138.3 6700 10000
7220 100 180 34 146.2 165.9 7000 11000 138.9 158.2 6700 10000
7221 105 190 36 164.3 188.2 7000 11000 156.3 179.5 6300 9500
7222 110 200 38 170.4 202.5 6700 10000 161.8 193 6000 9000
7224 120 215 40 175.4 218.4 6000 9000 166.3 207.9 5300 8000
7226 130 230 40 200.4 258.3 5600 8500 190.4 246.2 5000 7500
7228 140 250 42 223.6 306.6 5000 7500 212.3 292.2 4500 6700
7230 150 270 45 240.9 341.5 4500 6700 228.7 325.5 4000 6000
7232 160 290 48 248.6 365.8 4300 6300 236.1 348.6 3800 5600
7234 170 310 52 300.2 459.2 3800 5600 285 437.6 3600 5300
7236 180 320 52 311.2 490.8 3800 5600 295.5 467.7 3400 5000
7238 190 340 55 321.3 524.8 3400 5000 305.1 500.1 3200 4800
7240 200 360 58 330.9 558.6 3200 4800 314.2 532.3 3000 4500

 

Angular Contact Ball Bearing
                      X1=OD-0.5mm  
Single Row Double Row Four Points Contact Ball
70 series 72 series 73 series 52 series 53 series 32 series 33 series 40 series 49 series QJ series QJF series X1 series
ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM
7000 7200 7300 5200   3200   4032 4936 QJ203 QJF203 QJ1571X1 QJF1571X1
7001 7201 7301 5201   3201     4936X3 QJ303 QJF303    
7002 7202 7302 5202 5302 3202 3302   4938X3 QJ304 QJF304 QJ1571X1 QJF1571X1
7003 7203 7303 5203 5303 3203 3303 4040   QJ205 QJF205    
7004 7204 7304 5204 5304 3204 3304 4044 4944X3 QJ206 QJF206 QJ1571X1 QJF1571X1
7005 7205 7305 5205 5305 3205 3305 4048X1   QJ306 QJF306    
7006 7206 7306 5206 5306 3206 3306   4952X3 QJ207 QJF207 QJ1026X1 QJF1026X1
7007 7207 7307 5207 5307 3207 3307   4956X3 QJ307 QJF307    
7008 7208 7308 5208 5308 3208 3308   4960 QJ208 QJF208 QJ1571X1 QJF1571X1
7009 7209 7309 5209 5309 3209 3309   4960X3 QJ308 QJF308    
7571 7210 7310 5210 5310 3210 3310     QJ209 QJF209 QJ1030X1 QJF1030X1
7011 7211 7311 5211 5311 3211 3311     QJ309 QJF309    
7012 7212 7312 5212 5312 3212 3312     QJ210 QJF210 QJ1032X1 QJF1032X1
7013 7213 7313 5213 5313 3213 3313     QJ310 QJF310    
7014 7214 7314 5214 5314 3214 3314     QJ212 QJF212 QJ1034X1 QJF1034X1
7015 7215 7315 5215 5315 3215 3315     QJ214 QJF214    
7016 7216 7316 5216     3316     QJ216 QJF216 QJ1036X1 QJF1036X1
7018 7218 7318 5217   3220       QJ220 QJF220    
  7219 7319 5218     3322     QJ222 QJF222 QJ1038X1 QJF1038X1
7571 7220 7320 5219           QJ1571 QJF1571    
    7321 5220           QJ224 QJF224 QJ1040X1 QJF1040X1
7571 7222 7322             QJ1026 QJF1026    
7571 7224 7324             QJ226 QJF226    
7026 7226 7326             QJ1571 QJF1571    
7571 7228 7328             QJ228 QJF228    
7030 7230 7330             QJ1030 QJF1030    
7032 7232 7332             QJ230 QJF230    
7034 7234               QJ1032 QJF1032    
7036 7236 7336             QJ232 QJF232    
7038                 QJ1034 QJF1034    
7040 7240               QJ234 QJF234    
71952 7244               QJ1036 QJF1036    
71956 72948               QJ236 QJF236    
71957 7248               QJ1038 QJF1038    
7072                 QJ238 QJF238    
71976                 QJ1040 QJF1040    
                  QJ240 QJF240    
                  QJ1044 QJF1044    
                  QJ1048 QJF1048    
                  QJ1052 QJF1052    
                  QJ1056 QJF1056    
                  QJ1060 QJF1060    
                  QJ1064 QJF1064    
                  QJ1068 QJF1068    

SAMPLES
1. Samples quantity: 1-10 PCS are available.
2. Free samples: It depends on the Model No., material and quantity. Some of the bearings samples need client to pay samples charge and shipping cost.
3. It’s better to start your order with Trade Assurance to get full protection for your samples order.

CUSTOMIZED
The customized LOGO or drawing is acceptable for us.

MOQ
1. MOQ: 10 PCS standard bearings.
2. MOQ: 1000 PCS customized your brand bearings.

OEM POLICY
1. We can printing your brand (logo, artwork)on the shield or laser engraving your brand on the shield.
2. We can custom your packaging according to your design
3. All copyright own by clients and we promised don’t disclose any info.

Thank you very much for taking time to view our company’s website. If you are interested in this product, please feel free to contact us. We are always here.
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Contact Angle: 25°
Aligning: Non-Aligning Bearing
Separated: Separated
Samples:
US$ 2/Set
1 Set(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

ball bearing

What are the Common Signs of Wear or Damage in Ball Bearings that Indicate the Need for Replacement?

Ball bearings are subjected to wear and stress during operation, and over time, they may exhibit signs of damage or deterioration that warrant replacement. Recognizing these signs is crucial to prevent catastrophic failure and ensure safe and reliable operation. Here are the common signs of wear or damage in ball bearings:

  • Unusual Noise:

If you hear unusual grinding, clicking, or rumbling noises coming from the bearing during operation, it may indicate worn-out or damaged components. Unusual noise suggests that the bearing is no longer operating smoothly.

  • Vibration:

Excessive vibration in the machinery can be a sign of bearing wear. Vibrations can result from uneven wear, misalignment, or damaged components within the bearing.

  • Increased Temperature:

Higher operating temperatures than usual may indicate increased friction due to inadequate lubrication, wear, or other issues. Monitoring the bearing’s temperature can help identify potential problems.

  • Irregular Movement:

If you notice irregular movement, jerking, or sticking during rotation, it could be a sign that the bearing is no longer operating smoothly. This may be due to damaged rolling elements or raceways.

  • Reduced Performance:

If the machinery’s performance has decreased, it may be due to a compromised bearing. Reduced efficiency, increased energy consumption, or a decline in overall performance could be indicators of bearing wear.

  • Visible Wear or Damage:

Inspect the bearing for visible signs of wear, such as pitting, scoring, or discoloration on the rolling elements or raceways. Severe wear or damage is a clear indication that the bearing needs replacement.

  • Leakage or Contamination:

If there is evidence of lubricant leakage, contamination, or the presence of foreign particles around the bearing, it suggests that the seal or shield may be compromised, leading to potential damage.

  • Looseness or Excessive Play:

If you can feel excessive play or looseness when manually moving the bearing, it could indicate worn-out components or misalignment.

  • Reduced Lifespan:

If the bearing’s expected lifespan is significantly shorter than usual, it may be due to inadequate lubrication, excessive loads, or improper installation, leading to accelerated wear.

  • Frequent Failures:

If the bearing is consistently failing despite regular maintenance and proper use, it could indicate a chronic issue that requires addressing, such as inadequate lubrication or misalignment.

It’s important to conduct regular inspections, monitor performance, and address any signs of wear or damage promptly. Replacing worn or damaged ball bearings in a timely manner can prevent further damage to machinery, reduce downtime, and ensure safe and efficient operation.

ball bearing

How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?

Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:

  • Lubrication:

Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.

  • Material Properties:

Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.

  • Clearance Changes:

Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.

  • Corrosion and Contamination:

Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.

  • Thermal Stress:

Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.

  • Noise and Vibration:

Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.

  • Lubricant Degradation:

Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.

  • Seal Effectiveness:

Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.

  • Choosing Appropriate Bearings:

When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.

Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.

ball bearing

What is a Ball Bearing and How does it Function in Various Applications?

A ball bearing is a type of rolling-element bearing that uses balls to reduce friction between moving parts and support radial and axial loads. It consists of an outer ring, an inner ring, a set of balls, and a cage that separates and maintains a consistent spacing between the balls. Here’s how ball bearings function in various applications:

  • Reduction of Friction:

Ball bearings function by replacing sliding friction with rolling friction. The smooth, spherical balls minimize the contact area between the inner and outer rings, resulting in lower friction and reduced heat generation.

  • Radial and Axial Load Support:

Ball bearings are designed to support both radial loads (forces perpendicular to the shaft’s axis) and axial loads (forces parallel to the shaft’s axis). The distribution of balls within the bearing ensures load-carrying capacity in multiple directions.

  • Smooth Rotational Movement:

Ball bearings facilitate smooth and precise rotational movement. The rolling motion of the balls allows for controlled and continuous rotation with minimal resistance.

  • Applications in Machinery:

Ball bearings are used in a wide range of machinery and equipment, including motors, generators, gearboxes, conveyors, and fans. They enable the efficient transfer of motion while reducing wear and energy losses.

  • Automotive Industry:

Ball bearings are extensively used in automobiles for various applications, including wheel hubs, transmission systems, steering mechanisms, and engine components. They provide reliability and durability in challenging automotive environments.

  • Industrial Machinery:

In industrial settings, ball bearings support rotating shafts and ensure the smooth operation of equipment such as pumps, compressors, and machine tools.

  • High-Speed Applications:

Ball bearings are suitable for high-speed applications due to their low friction and ability to accommodate rapid rotation. They are used in applications like electric motors and aerospace components.

  • Precision Instruments:

For precision instruments, such as watches, cameras, and medical devices, ball bearings provide accurate rotational movement and contribute to the overall performance of the instrument.

  • Variety of Sizes and Types:

Ball bearings come in various sizes, configurations, and materials to suit different applications. Different types include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and more.

In summary, ball bearings are essential components in a wide range of applications where smooth rotation, load support, and reduced friction are critical. Their versatility, reliability, and efficiency make them indispensable in industries spanning from automotive to industrial machinery to precision instruments.

China factory NSK, NTN. Koyo,S Kf,Angular Contact Ball Bearings,7006c,7006CTA,7006ceta,7006AC,B7006c,7007c,7007CTA,7007ceta,7007AC,B7007c,7008c,7008CTA,7008ceta,7008AC,B7008c   ball bearingChina factory NSK, NTN. Koyo,S Kf,Angular Contact Ball Bearings,7006c,7006CTA,7006ceta,7006AC,B7006c,7007c,7007CTA,7007ceta,7007AC,B7007c,7008c,7008CTA,7008ceta,7008AC,B7008c   ball bearing
editor by CX 2024-04-17

Steel Ball Bearings

As one of the leading steel ball bearings manufacturers, suppliers, and exporters of mechanical products, We offer steel ball bearings and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of steel ball bearings.

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