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Anti - Abrasive Miniature Chrome Steel Balls High Precision 1 / 2 inch 12.7mm

Φ12.7mm(1/2mm)

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Description

chrome steel balls Φ 12.7mm ( inch 1/2mm ) ?bearing balls

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Specifications:

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chrome?steel?balls?Φ9.525mm?(inch?3/8mm)??steel?balls?for?bearings

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Description:

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Ball?diameter (mm) | Quantity?per?kilogram | Ball?diameter (mm) | Quantity?per?kilogram | Ball?diameter (mm) | 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& acute;/32 | 13.64 |
6.5000 | 894 | 15.0812?19/32 | 71.4 | 26.9875?1& acute;/16 | 12.47 |
6.7469?17/64 | 800 | 14.8750?5/8 | 61.3 | 27.7812?1& acute;/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& acute;/8 | 10.50 |
8.0000 | 478 | 17.0000 | 50 | 30.1625?1& acute;/16 | 8.93 |
8.5000 | 400 | 17.4625?11/16 | 46.1 | ? | ? |
8.7312?11/32 | 369 | 18.2562?23/32 | 40.3 | ? | ? |
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Applications:

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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.?

Steel balls are also applied to precision instrument, bicycles, toys, sports fitness equipments, ball grinders, ect

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Tolerance?level?and?technical?requirements:

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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 |
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