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High Precision And Mini size Full Ceramic Bearings ZrO2 Or Si3N4

High Precision And Mini size Full Ceramic Bearings ZrO2 Or Si3N4

    • High Precision And Mini size Full Ceramic Bearings ZrO2 Or Si3N4
    • High Precision And Mini size Full Ceramic Bearings ZrO2 Or Si3N4
  • High Precision And Mini size Full Ceramic Bearings ZrO2 Or Si3N4

    Product Details:

    Place of Origin: China
    Brand Name: TOB Ceramic Bearings
    Certification: ISO 16949

    Payment & Shipping Terms:

    Minimum Order Quantity: negotiated
    Price: negotiated
    Packaging Details: Cartons or Pallets
    Delivery Time: negotiated
    Payment Terms: T/T
    Supply Ability: negotiated
    Contact Now
    Detailed Product Description
    Material: ZrO2 Or Si3N4 Etc. Almost Material Of Cage: PTFE Material
    Other Material Of Cage: GFRPA66-25, PEEK, PI, AISI SUS304, SUS316, Cu, Etc. Density: ZrO2 Is 6g/cm3, Si3N4 Is 3.2g/cm3
    Cycle Stress: 50*10^6 Application Temperature: 1000℃

     

    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 data unit GCr15 9Cr18 Si3N4 AL203 ZrO2
    Density g/cm³ 7.8 7.9 3.2 3.95 6
    a Coefficient of expansion 10^-6/℃ 11 17 3.2 9.1 10.5
    E modulus of elasticity Gpa 208 200 320 380 210
    μ Poisson ratio   0.3 0.3 0.26 0.27 0.3
    HV Hardness   800 700 1700 1800 1300
    δ Flexural strength Mpa 2400 2600 900 220 1000
    δ Compressive Strength MPa     2000 1500 3500
    Kc Impact strength Nm/cm² 20 25 7 3.5 11
    λ Thermal conductivity W/mk 30-40 15 3.5 25 2.5
    Ω Specific resistivity mm²/m 1 0.75 10^18 10^8 10^5
    Specific heat J/KgK 450 450 800 880 400
    Application temperature 120 150 1000 1850 800
    Anti-corrossion   No poor Good Good Good
    Cycle stress   10*10^6 10*10^6 50*10^6 30*10^6 50*10^6
    Destroy model   peel peel peel fracture peel/fracture
    Anti-magnetism   Yes Yes No No No
    Dimension stability   bad poor Good Good Good
    Insulate properties   No insulation No insulation Good Good Good
                 

     

     

    Basic properties of staple engineer plastic
    Material HDPE PP POM PA66 PVDF PPS PTFE PEEK
    Long-time working temp. 90 100 110 100 150 230 260 280
    Density g/cm3 0.91 1.42 1.14 1.77 1.35 2.18 1.32
    Ball indentation hardness 50 80 170 170 80 190 30  
    Tensile stress 25 30 70 80 50 75 25 95
    Sliding friction coefficient 0.29 0.3 0.34 0.35-0.42 0.3   0.08-0.1 0.3-0.38
    Melted temperature 130 165 175 260 172 280 327 343
    Short-time highest application temperature 90 140 150 170 150 260 260 300
    Coet of Inear expansion (10^-5/K) 13-15 17 10 8 13 5 12 5
    Dielectric constant at 1 Mhz(10^6HZ) 2.4 2.25 3.7 3.6-5 8   2.1 3.2-3.3
    Volume resisrivity (Ω·cm) >10^15 >10^24 >10^14 10^13 10^12 >10^13 10^14 10^13
    flammability UL94 + + - (+) (+) - + +
    Anti-weathering - - - - - - + -
    Note: + =resistant; (+) =partly resistant; - =non-resistant
     

     

    High Precision And Mini size Full Ceramic Bearings ZrO2 Or Si3N4

     

    Contact Details
    ZHEJIANG TOP BEARINGS CO., LTD.

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