Si3N4 Ceramic Ball Si3N4 Ceramic Ball with good ability of isolation and no magnetism
is the precision ceramic that fired in high temperature without
oxidation air, which has the high intension, high wearing
resistance, high temperature resistance, anti-canker, strong acid
and alkali resistance, can be used in seawater for a long time. At
800℃, the intension and rigidity almost couldn’t be changed, whose
density is 3.20g/cm3 and is the 1/3 of the weight of bearing steel.
There are small centrifugal force when circumgyrating and run at high speed. Si3N4 Ceramic Ball
also has the self-lubrication, and can be used in the environment
with no lubricate medium and high pollution. | Staple Material and Manufacturing Presision | | | Ceramic Balls | Plastic balls | Glass Balls | Stainless Balls | | meterial | Zr02,Si3N4,SiC,Al2O3 | POM,PE,PP,PA,UPE,PEEK | GLASS | 440C,304,316,316L | | grad | G5-G200 | G100-G1000 | G100-G1000 | G10-G200 |
| Staple size of the balls | | Size(inch) | Size(mm) | | Size(inch) | Size(mm) | | | 1.5 | | 1/16" | 1.588 | | | 2 | | 3/32 | 2.381 | | 1/8" | 3.175 | | 5/32" | 3.969 | | 3/16" | 4.763 | | 7/32" | 5.556 | | 1/4" | 6.35 | | 17/64" | 6.747 | | | 7 | | 9/32" | 7.144 | | 5/16" | 7.938 | | 11/32" | 8.731 | | 3/8" | 9.525 | | 13/32" | 10.319 | | 7/16" | 11.112 | | 29/64" | 11.509 | | 15/32" | 11.906 | | | 12 | | 31/64" | 12.303 | | 1/2" | 12.7 | | 17/32" | 13.494 | | | 14 | | 9/16" | 14.288 | | 19/32" | 15.081 | | 5/8" | 15.875 | | 21/32" | 16.669 | | 11/16" | 17.463 | | 23/32" | 18.256 | | 3/4" | 19.05 | | 25/32" | 19.844 | | | 20 | | 13/16" | 20.638 | | 7/8" | 22.225 | | 15/16" | 23.812 | | 1" | 25.4 | | 1-1/16" | 26.988 | | 1-1/8" | 28.575 | | 1-3/16" | 30.163 | | 1-1/4" | 31.75 | | 1-3/8" | 34.925 | | | 35 | | 1-1/2" | 38.1 | | 1-5/8" | 41.275 | | 1-11/16" | 42.863 | | 1-7/8" | 47.625 | | 2" | 50.8 | | | | | | |
| Tolerance and surface roughness of the balls | | Grade | Variation of ball diameter | Deviation from ( △ Sph) | Surface roughness spherical from(Ra) | | not over μ m | | 3 | 0.08 | 0.08 | 0.012 | | 5 | 0.13 | 0.13 | 0.02 | | 10 | 0.25 | 0.25 | 0.025 | | 16 | 0.4 | 0.4 | 0.032 | | 20 | 0.5 | 0.5 | 0.04 | | 28 | 0.7 | 0.7 | 0.05 | | 40 | 1 | 1 | 0.08 | | 60 | 1.5 | 1.5 | 0.1 | | 100 | 2.5 | 2.5 | 0.125 | | 200 | 5 | 5 | 0.2 |
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