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Silicon nitride(Si3N4) Ball |
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 Silicon nitride (Si3N4) Ceramic ball
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Size (inch) |
Size (mm) |
Si3N4
Ceramic Ball size |
Size (inch) |
Size (mm) |
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1.5 |
1/16 " |
1.588 |
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2 |
3/32 |
2.381 |
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1/8 " |
3.175 |
5/32 " |
3.969 |
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3/16 " |
4.763 |
7/32 " |
5.556 |
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1/4 " |
6.35 |
17/64 " |
6.747 |
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7 |
9/32 " |
7.144 |
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5/16" |
7.938 |
11/32 " |
8.731 |
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3/8 " |
9.525 |
13/32" |
10.319 |
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7/16 " |
11.112 |
29/64 " |
11.509 |
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15/32 " |
11.906 |
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12 |
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31/64" |
12.303 |
1/2 " |
12.7 |
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17/32" |
13.494 |
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14 |
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9/16" |
14.288 |
19/32" |
15.081 |
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5/8 " |
15.875 |
21/32 " |
16.669 |
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11/16" |
17.463 |
23/32 " |
18.256 |
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3/4" |
19.05 |
25/32 " |
19.844 |
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20 |
13/16 " |
20.638 |
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7/8 " |
22.225 |
15/16 " |
23.812 |
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1 " |
25.4 |
1-1/16 " |
26.988 |
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1-1/8 " |
28.575 |
1-3/16 |
30.163 |
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1-1/4 " |
31.750 |
1-3/8 " |
34.925 |
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35 |
1-1/2 " |
38.1 |
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1-5/8 " |
41.275 |
1-11/16 " |
42.863 |
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1-7/8 " |
47.625 |
2 " |
50.8 |
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Ceramic Ball accuracy class GB308-2002 ISO3290-1998 (E) Standard |
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Grade |
Ball Diameter fluxional(µ m ) |
Spheres( Δ Sph) Tolerance( µ m) |
Surface roughness(Ra, µ m) |
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3 |
0.08 |
0.08 |
0.010 |
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5 |
0.13 |
0.13 |
0.014 |
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10 |
0.25 |
0.25 |
0.020 |
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16 |
0.40 |
0.40 |
0.025 |
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20 |
0.50 |
0.50 |
0.032 |
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24 |
0.60 |
0.60 |
0.040 |
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28 |
0.70 |
0.70 |
0.050 |
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40 |
1.00 |
1.00 |
0.060 |
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60 |
1.50 |
1.50 |
0.080 |
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