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Nanjing Haning Bearing Manufacturing Co., Ltd. founded in 2003, It's specialized in manufacturing deep groove ball bearings, tapered roller bearings, automobile bearings, steel ball, steel balls etc. The high speed and low noise bearings is our mainly produces of EMQ bearings. We are own our brand of "HRBN", It is of advanced productive technique, consummate device and complete testing means. As well as we have powerful strength for new products, steel ball, steel balls and special bearings development. Form last year, We are sales about Seventy million US$ for export, About 90% produce in our factory is for export.
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QUALITY STANDAR | GRADE | GAUG RANG | Sph Sphericity Daviation | VDWS Diameter Variaion | VDWL Lot Diamete | Ra Surface
Rouqhoess | Not more than(um) | ISO | AFBMA | DIN | ISO | AFBMA | DIN | ISO | AFMA | DIN | ISO | AFBMA | DIN | ISO | AFBMA | DIN | ISO | AFBMA | DIN | 10 | 10 | Ⅲ | +-9 | +-2.5 | +-11 | 0.25 | 0.25 | 1 | 0.25 | 0.25 |
| 0.5 | 0.5 | 2 | 0.025 | 0.025 |
| 16 | 16 | Ⅳ | +-10 | +-2.5 | +-14 | 0.4 | 0.4 | 2 | 0.4 | 0.4 |
| 0.8 | 0.8 | 4 | 0.032 | 0.025 |
| 20 | 24 | Ⅴ | +-10 | +-2.5 | +-75 | 0.5 | 0.6 | 25 | 0.5 | 0.6 |
| 1 | 1.2 | 50 | 0.04 | 0.05 |
| 28 | 48 |
| +-12 | +-5 |
| 0.7 | 1.2 |
| 0.7 | 1.2 |
| 1.4 | 2.4 |
| 0.05 | 0.075 |
| 40 | 100 |
| +-16 | +-12.5 |
| 1 | 2.5 |
| 1 | 2.5 |
| 2 | 5 |
| 0.08 | 0.125 |
| 100 | 200 |
| +-40 | +-25 |
| 2.5 | 5 |
| 2.5 | 5 |
| 5 | 10 |
| 0.125 | 0.2 |
| 200 | 500 |
| +-60 | +-50 |
| 50 | 12.5 |
| 5 | 12.5 |
| 10 | 25 |
| 0.2 |
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| 1000 |
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| +-125 |
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| 25 |
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| 25 |
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| 50 |
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DIMENSIONAL CONVERSION CHART | Inch Fractins | Inch Decimals | mm | weiht per 1000alls (kg) | Inch fractioh | Inch Decimals | mm | Weight per 1000balls (kg) | 1/64 | .0156 | 0.397 | .00026 | - | .7480 | 19.000 | 27.98 | - | .0197 | 0.500 | .00051 | 3/4 | .7500 | 19.050 | 28.20 | 1/32 | .0312 | 0.794 | .00021 | 25/32 | .7812 | 19.844 | 31.87 | - | .0394 | 1.000 | .00407 | - | .7874 | 20.000 | 32.63 | 3/64 | .0469 | 1.190 | .00688 | 13/16 | .8125 | 20.637 | 35.85 | - | .0472 | 1.200 | .00704 | - | .8268 | 21.000 | 37.77 | - | .0590 | 1.500 | .01377 | 27/32 | .8437 | 21.431 | 40.15 | 1/16 | .0625 | 1.588 | .01632 | - | .8661 | 22.000 | 43.43 | 5/64 | .0781 | 1.984 | .03187 | 7/8 | .8750 | 22.225 | 44.78 | - | .0787 | 2.000 | .0326 | - | .9055 | 23.000 | 49.63 | 3/32 | .0937 | 2.381 | .0550 | 29/32 | .9062 | 23.019 | 49.75 | - | .0984 | 2.500 | .0638 | 15/16 | .9375 | 23.812 | 55.07 | 7/64 | .1094 | 2.778 | .0875 | - | .9449 | 24.000 | 56.39 | - | .181 | 3.000 | .101 | 31/32 | .9687 | 24.606 | 60.77 | 1/8 | .1250 | 3.175 | .1305 | - | .9842 | 25.000 | 63.73 | - | .1378 | 3.500 | .1749 | 1 | 1.0000 | 25.400 | 66.84 | 9/64 | .1406 | 3.572 | .1859 | - | 1.0236 | 26.000 | 71.69 | 5/32 | .1562 | 3.969 | .2550 | 1 1/16 | 1.0625 | 26.987 | 80.17 | - | .1575 | 4.000 | .2610 | - | 1.1024 | 28.000 | 89.54 | 11/64 | .1719 | 4.366 | .3394 | 1 1/8 | 1.1250 | 28.575 | 95.17 | - | .1770 | 4.500 | .3716 | - | 1.1811 | 30.000 | 110.10 | 3/16 | .1875 | 4.763 | .4406 | 1 3/16 | 1.1875 | 30.162 | 11.90 | - | .1968 | 5.000 | .5099 | 1 1/4 | 1.2500 | 31.750 | 130.50 | - | .2165 | 5.550 | .6786 | - | 1.2598 | 32.000 | 133.70 | 7/32 | .2187 | 5.556 | .6996 | 1 5/16 | 1.3125 | 3.37 | 151.10 | 15/64 | .2344 | 5.953 | .8605 | - | 1.3386 | 34.000 | 160.30 | - | .2362 | 6.000 | .8810 | 1 3/8 | 1.3750 | 34.925 | 173.80 | 1/4 | .2500 | 6.350 | 1.044 | - | 1.3780 | 35.000 | 174.90 | - | .2559 | 6.500 | 1.120 | - | 1.4173 | 36.000 | 190.30 | 17/64 | .2656 | 6.747 | 1.253 | 1 7/16 | 1.4375 | 36.512 | 198.50 | - | .2756 | 7.000 | 1.399 | - | 1.4960 | 38.000 | 223.80 | 9/32 | .2812 | 7.144 | 1.487 | 1 1/2 | 1.5000 | 38.100 | 225.60 | - | .2953 | 7.500 | 1.721 | 1 9/16 | 1.5625 | 39.687 | 255.00 | 19/64 | .2969 | 7.541 | 1.749 | - | 1.5748 | 40.000 | 261.00 | 5/16 | .3125 | 7.938 | 2.040 | 1 5/8 | 1.6250 | 41.275 | 286.80 | - | .3150 | 8.000 | 2.088 | 1 11/16 | 1.6875 | 42.862 | 321.20 | - | .3346 | 8.500 | 2.505 | 1 3/4 | 1.7500 | 44.450 | 358.20 | 1/32 | .3437 | 8.731 | 2.715 | - | 1.7716 | 45.000 | 371.70 | - | .3543 | 9.000 | 2.937 | 1 13/16 | 1.8125 | 46.037 | 398.00 | 23/64 | .3594 | 9.128 | 3.102 | 1 7/8 | 1.8750 | 47.625 | 440.60 | - | .3740 | 9.500 | 3.497 | 1 15/16 | 1.9375 | 49.212 | 486.10 | 3/8 | .3750 | 9.525 | 3.525 | - | 1.9685 | 50.000 | 509.90 | 25/64 | .3906 | 9.922 | 3.983 | 2 | 2.0000 | 50.800 | 534.70 | - | .3937 | 10.000 | 4.079 | 2 1/8 | 2.1250 | 53.975 | 641.40 | 13/32 | .4062 | 10.319 | 4.481 | - | 2.1653 | 55.000 | 678.60 | - | .4331 | 11.000 | 5.429 | 2 1/4 | 2.2500 | 57.150 | 761.30 | 7/16 | .4375 | 11.112 | 5.597 | - | 2.3622 | 60.000 | 881.00 | - | .4528 | 11.500 | 6.203 | 2 3/8 | 2.3750 | 60.325 | 895.40 | 29/64 | .4531 | 11.509 | 6.219 | 2 1/2 | 2.5000 | 63.500 | 1044.40 | 15/32 | .4687 | 11.906 | 6.884 | - | 2.5590 | 65.000 | 1120.10 | - | .4724 | 12.000 | 7.048 | 2 5/8 | 2.6250 | 66.675 | 1209.00 | 31/64 | .4844 | 12.303 | 7.596 | 2 3/4 | 2.7500 | 69.850 | 1390.10 | 1/2 | .5000 | 12.700 | 8.355 | - | 2.7559 | 70.000 | 1484.70 | - | .5118 | 13.000 | 8.961 | 2 7/8 | 2.8750 | 73.025 | 1588.40 | 17/32 | .5312 | 13.494 | 10.02 | - | 2.9528 | 75.000 | 1720.70 | - | .5512 | 14.000 | 11.19 | 3 | 3.0000 | 76.200 | 1804.70 | 9/16 | .5625 | 14.288 | 1.90 | 3 1/8 | 3.1250 | 79.375 | 2039.80 | - | .5905 | 15.000 | 13.77 | - | 3.1500 | 80.000 | 2088.30 | 19/32 | .5937 | 15.081 | 13.99 | 3 1/4 | 3.2500 | 82.550 | 2294.40 | 5/8 | .6250 | 15.875 | 16.32 | - | 3.3464 | 85.000 | 2530.90 | - | .6299 | 16.000 | 16.70 | 3 1/2 | 3.5000 | 88.900 | 2865.70 | 21/32 | .6562 | 16.669 | 18.89 | - | 3.543 | 90.000 | 2993.40 | - | .6693 | 17.000 | 20.04 | - | 3.7401 | 95.000 | 3521.10 | 1/16 | .6875 | 17.462 | 21.72 | 3 3/4 | 3.7500 | 92.250 | 3524.70 | - | .7087 | 18.000 | 23.79 | - | 3.9370 | 100.000 | 4078.80 | 23/32 | .7187 | 18.256 | 24.82 | 4 | 4.0000 | 101.600 | 4277.70 |
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