ZHEJIANG TOP BEARINGS CO., LTD.
YOUR TOP PARTERNER FOR PLAIN BEARINGS and ROLLING BEARINGS.
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Sic Ceramic Ball
The density of Sic Ceramic Ball is 3.2g/cm3 and it’s the same as Si3N4 ball, at 1400℃, the intension and rigidity almost couldn’t be changed. Sic Ceramic Ball has the self-lubrication that can solve the pollution of lubricate medium. Comparing with Si3N4, Sic Ceramic Ball has higher rigidity, lower anti-press strength and lower rupture toughness.
| 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 |
