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ZHEJIANG TOP BEARINGS CO., LTD.
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Si3N4 Full Ceramic Bearings , Cage Was Made By PTFE , GFRPA66-25 , PEEK , PI , Phonemic Textiles Tube , etc .

ZHEJIANG TOP BEARINGS CO., LTD.
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ZHEJIANG TOP BEARINGS CO., LTD.
City: Jiaxing
Province/State: Zhejiang
Country/Region: China
Contact Person:Mr Leo Wu

Si3N4 Full Ceramic Bearings , Cage Was Made By PTFE , GFRPA66-25 , PEEK , PI , Phonemic Textiles Tube , etc .

Brand Name : TOB Ceramic Bearings
Certification : ISO 16949
Place of Origin : China
MOQ : negotiated
Price : negotiated
Payment Terms : T/T
Supply Ability : negotiated
Delivery Time : negotiated
Packaging Details : Cartons or Pallets
Material : Si3N4 Ceramic Material
Density : 3.2 g/cm3
Material of Rings & Balls : Full Si3N4 ceramic material
Almost Material of Cage : PTFE
Other material of Cage : GFRPA66-25, PEEK, PI, Phonemic Textiles Tube ,etc.
Application temperature : 1000℃
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Si3N4 Ceramic Bearings, Full Ceramic Bearings


Full ceramic bearing made with Si3N4 have some better performance than ZrO2, the rings and balls made by full ceramic material:Si3N4, as a standard contracture, the cage made by PTFE, generally we also could make the cage with GFRPA66-25,PEEK,PI, Phonemic Textiles Tube ,etc. Compares than the material of ZrO2, The SiN4 ceramics bearings could endure heavier load and could be used in higher temperature environment. Also we could offer precision ceramic bearing which generally used in high-speed and high-rigidity spindle. The manufactured clearance could be P4 to UP grade.


Comparison of bearing material technical data
Technical dataunitGCr159Cr18Si3N4AL203ZrO2
Densityg/cm³7.87.93.23.956
a Coefficient of expansion10^-6/℃11173.29.110.5
E modulus of elasticityGpa208200320380210
μ Poisson ratio 0.30.30.260.270.3
HV Hardness 800700170018001300
δ Flexural strengthMpa240026009002201000
δ Compressive StrengthMPa  200015003500
Kc Impact strengthNm/cm²202573.511
λ Thermal conductivityW/mk30-40153.5252.5
Ω Specific resistivitymm²/m10.7510^1810^810^5
Specific heatJ/KgK450450800880400
Application temperature12015010001850800
Anti-corrossion NopoorGoodGoodGood
Cycle stress 10*10^610*10^650*10^630*10^650*10^6
Destroy model peelpeelpeelfracturepeel/fracture
Anti-magnetism YesYesNoNoNo
Dimension stability badpoorGoodGoodGood
Insulate properties No insulationNo insulationGoodGoodGood

Basic properties of staple engineer plastic
MaterialHDPEPPPOMPA66PVDFPPSPTFEPEEK
Long-time working temp.90100110100150230260280
Densityg/cm30.911.421.141.771.352.181.32
Ball indentation hardness50801701708019030 
Tensile stress2530708050752595
Sliding friction coefficient0.290.30.340.35-0.420.3 0.08-0.10.3-0.38
Melted temperature130165175260172280327343
Short-time highest application temperature90140150170150260260300
Coet of Inear expansion (10^-5/K)13-1517108135125
Dielectric constant at 1 Mhz(10^6HZ)2.42.253.73.6-58 2.13.2-3.3
Volume resisrivity (Ω·cm)>10^15>10^24>10^1410^1310^12>10^1310^1410^13
flammability UL94++-(+)(+)-++
Anti-weathering------+-
Note: + =resistant; (+) =partly resistant; - =non-resistant



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Si3N4 Full Ceramic Bearings , Cage Was Made By PTFE , GFRPA66-25 , PEEK , PI , Phonemic Textiles Tube , etc . Images

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