High Precision Mini Size ZrO2 Si3N4 Ceramic Ball Bearings

Brand Name:OEM
Certification:ISO 16949
Minimum Order Quantity:Negotiable
Delivery Time:10-15 working days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
Place of Origin:CHINA
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High Precision And Mini-size Ceramic Bearings


With widely using of the ceramic bearings in all kinds of industries, they have the different requirements of frame, category, material, and precision of the ceramic bearings. During the production, the requirements need to be improved by a long experiment, but on the small type (inner diameter less than 10mm), the precision of product is hard to meet the requirement of customers by the routine processing craft.

According to above problem, we have an adjustment of the manufacturing machine and processing craft. We use a new processing craft aiming at the ceramic bearing whose inner diameter less than 10mm, and purchase the new processing machine, which insure the production of the high precision and mini-size ceramic bearing from the hardware.


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


China High Precision Mini Size ZrO2 Si3N4 Ceramic Ball Bearings supplier

High Precision Mini Size ZrO2 Si3N4 Ceramic Ball Bearings

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