
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 |
ZHEJIANG TOP BEARINGS CO., LTD.
ZHEJIANG TOP BEARINGS CO., LTD. is a manufacturer and distribution of sliding bearings. Our products have been widely applied to more than 30 industries like automobile, engineering machinery, metallurgy, water conservancy and hydroelectric power and mechanical manufacturing. Also we can design for customer's specific requirement.
We have reformed boldly, absorbed social elites through strengthening talent training, fully implemented modern management mechanism and new marketing strategy and been dedicated to long-term development of self-lubricating bearing industry. To control quality strictly, we set up a complete quality management system (ISO9001 and ISO/TS16949) in the quality policy of “Top Quality, Top Credit, Sustainable Growth”. Our quality and performance have reached advanced level.
To expand more markets, stand on the word and meet diversified requirements of customers, we are actively expanding and integrating with international markets. Now our products are available in more than 20 countries and regions in Western Europe, America and Southeast Asia. We’ll strengthen industrial horizontal integration further, create scale effect, open up emerging fields and develop industrial advantages to realize our strategic target and create a bright future with friends.