Ceramic Silicon Nitride With Flanged Shaft

Full Ceramic Silicon Nitride With Flanged Shaft bearings can be made in silicon nitride, zirconia or silicon carbide, three kinds in total. You can find those ceramic materials' characteristic at ceramic materials and their properties.

 

TECHNICAL SPECS

 

Material Silicon Nitride (Si3N4)
Size 25x47x52mm
Accuracy 0.008mm
Highest Temperature 800℃(1472F)
Circular Runout 12um
Perpendicularity 12um
Circularity 10um
Parallelism 12um
Applications Chemicals, aerospace, medicine, environmental protection equipment, electronics industry. High-temperature pharmaceutical equipment, chemical solution field, 500 degrees high temperature, corrosion resistance

 

 

MATERIAL PROPERTIES

 

Performance unit Si3n4
Ingredients Aluninum (Al)              2.0~3.5%
Yttrium (Y)              4.0~5.0%
Titanium (Ti)              1.0~1.5%
Oxygan (O)              4.5~6.0%
Carbon(C)             0.3~0.8%
Other impurities less than 0.1%
The rest is silicon nitride
Density g/cm3 ≥3.20
Hardness Hv 1400~1600
Bending strength Mpa >800
Compressive strength Mpa >4000
Elastic Modulus Gpa 300~315
Fracture toughness Mpa.m1/2 6~8
Cofficient of thermal expansion 10-6/℃ 2.2~3.0
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