Si3n4 1-50.8mm G3- G100 Ceramic Ball For Bearing
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Si3N4 Dihui Ceramic Ball for Bearing
Shandong Dihui Machinery Technology has the complete mature ceramic ball production technology and the whole ceramic balls production line. The products have stable performance and good consistency. We can provide various sizes ceramic balls according to customers requirement, including both GPS and HIP sintering technology products.
Application:
Most ceramic balls are mounted in the bearing (high speed bearing, high precision bearing, vacuum bearing, high/low temperature bearing, nonmagnetic bearing, high precision ball screws) for high technology industry, such as aerospace and national defense and etc. The ceramic balls can also be used for chemistry, metallurgy, medical treatment, food industry, oilfield, electronic engineering and etc.
Parameter
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Material |
Properties |
Class |
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Class 1 |
Class 2 |
Class 3 |
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Si3N4 |
Density (g/cm³） |
3.0≤ρ≤3.6 |
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Elastic modulus （Gpa） |
270≤E≤330 |
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Poisson's ratio |
0.23≤μ≤0.29 |
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Coefficient of thermal expansion,X10-6/℃ |
2.0≤α≤3.7 |
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(applicable range: room temp. to 500℃) |
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Average flexural strength (MPa) |
4-point test method |
≥750 |
≥650 |
≥530 |
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3-point test method |
≥820 |
≥720 |
≥550 |
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Average Vickers hardness /Gpa |
≥14.2 |
≥13.3 |
≥12.7 |
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Averag indentation fracture resistance(Mpa*m1/2） |
≥6 |
≥5 |
≥5 |
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Crushing load ratio (%） |
40 |
35 |
30 |
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Microstructure |
Pore size/μm |
≤10 |
≤10 |
≤25 |
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Inclusion/（number/cm²） |
25＜S≤50 |
≤4 |
≤8 |
≤16 |
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50＜S≤100 |
≤1 |
≤2 |
≤4 |
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100＜S≤200 |
≤0 |
≤1 |
≤2 |
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S＞200 |
0 |
0 |
≤1 |
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Capacity |
*Fine ceramics standard: GB/T 31703-2015，ISO 26602-2017，ASTM F2094 F2094M-2018a， |
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*Range：1mm-50.8mm |
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*Grade：G3-G100 |
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Business Nature
Manufacturer
Country/Region
Qingdao, China
Main Products
Ceramic Ball, Carbon Steel Ball, Chrome Steel Ball , Stainless Steel Ball...
Shandong Dihui Bearing Technology Co., Ltd ( Original name is Shandong YunCheng County Steel Ball Factory) is founded in 1989. It’s Located in Yuncheng county, which is the heroes’ hometown of Chinese famous masterwork Water Margin. YunCheng county is adjacent to NO. 220 national road in the south. Beijing to Hongkong high speed railway and South Shandong high speed railway are crossed here. The geographic position is very good and traffic is much convenient. Our factory mainly produce precision G5 – G1000 chrome steel, carbon steel, stainless steel, ceramic, cemented carbide and some special material balls. We also produce rollers and needles with steel and ceramic material. Our products have been successfully used on the applications like aerospace, national defense technology, automotive industry, bearing and linear, cosmetics packaging, medical apparatus, pumps, valves, hardware and precise instrument etc. Our products are being widely exported to Europe, USA, Japan, South Korea, Middle Asia and Southeast Asia. Adhering to the principle “existing basing on quality, developing basing on credit”, we have built good business relationship with many domestic and overseas clients. Shandong Dihui Bearing Technology Co., Ltd sincerely welcome you to come and cooperate with us
