CHANGZHOU WUJIN SUNAN BEARING CO.,LTD
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Φ12mm steel balls stainless steel balls AISI420 steel balls for bearings
Specifications:
good quality bearing steel balls stainless steel balls AISI420 Φ12mm steel balls for bearings
Description:
| Ball diameter (mm) | Quantity per kilogram | Ball diameter | Quantity per kilogram | Ball diameter | Quantity per kilogram |
| 2.0000 | 30700 | 9.0000 | 337 | 19.0000 | 35.77 |
| 2.3812 3/32 | 18182 | 9.5250 3/8 | 284 | 19.0500 3/4 | 35.5 |
| 2.5000 | 15698 | 10.0000 | 245 | 19.8438 25/32 | 31.4 |
| 3.0000 | 9091 | 10.3188 13/32 | 223 | 20.637013/16 | 27.9 |
| 3.1750 1/8 | 7634 | 11.0000 | 185 | 21.0000 | 26.49 |
| 3.5000 | 5717 | 11.1125 7/16 | 179 | 21.4313 27/32 | 24.9 |
| 3.9688 5/32 | 3922 | 11.5000 | 161 | 22.2250 7/8 | 22.3 |
| 4.0000 | 3831 | 11.5094 29/64 | 161 | 23.0000 | 20.17 |
| 4.7625 3/16 | 2268 | 11.9062 15/32 | 145 | 23.0188 29/32 | 20.1 |
| 5.0000 | 1961 | 12.0000 | 142 | 23.8125 15/16 | 18.2 |
| 5.1594 13/64 | 1786 | 12.303131 /64 | 132 | 24.0000 | 17.75 |
| 5.5562 7/32 | 1431 | 12.7000 1/2 | 120 | 24.6063 31/32 | 16.5 |
| 5.9531 15/64 | 1163 | 13.4938 17/32 | 100 | 25.0000 | 15.70 |
| 6.0000 | 1136 | 14.0000 | 89 | 25.40000 1 | 15 |
| 6.3500 1/4 | 962 | 14.2875 9/16 | 84.0 | 26.9875 1'/32 | 13.64 |
| 6.5000 | 894 | 15.0812 19/32 | 71.4 | 26.9875 1'/16 | 12.47 |
| 6.7469 17/64 | 800 | 14.8750 5/8 | 61.3 | 27.7812 1'/32 | 11.4 |
| 7.1438 9/32 | 671 | 16.0000 | 59.9 | 28.0000 | 11.18 |
| 7.9372 5/16 | 490 | 16.6688 21/32 | 52.9 | 28.5750 1'/8 | 10.50 |
| 8.0000 | 478 | 17.0000 | 50 | 30.1625 1'/16 | 8.93 |
| 8.5000 | 400 | 17.4625 11/16 | 46.1 |
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| 8.7312 11/32 | 369 | 18.2562 23/32 | 40.3 |
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Applications:
Steel balls are important component of bearings, and are also most widely used rolling body in bearings field. The quality directly affect the bearings character.
Tolerance level and technical requirements:
| Grade
| Ball diameter variation | Spherical deviation | Ball surface roughness | Ball diameter variation | Basic diameter tolerance |
| Vdws | △Sph | Ra | Vdwl | Tdn | |
| No more than (um) | |||||
| 10 | 0.25 | 0.25 | 0.025 | 0.5 | * |
| 16 | 0.4 | 0.4 | 0.032 | 0.8 | * |
| 20 | 0.5 | 0.5 | 0.05 | 1 | * |
| 28 | 0.7 | 0.7 | 0.05 | 1.5 | * |
| 40 | 1.0 | 1.0 | 0.08 | 2 | * |
| 60 | 1.5 | 1.5 | 0.10 | 3 | * |
| 100 | 2.5 | 2.5 | 0.125 | 5 | ±12.5 |
| 200 | 5 | 5 | 0.2 | 10 | ±25 |
| 500 | 13 | 13 | * | 25 | ±50 |
| 1000 | 25 | 25 | * | 50 | ±125 |
Advantage:
- 20 years export experience
- Strict quality control
- Delivery in time
- Cost effective
- OEM service is available with good prices
- Your success is our business and future
