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PTFE PVDF Plastic Ball Bearings Corrosion Preventive With Ceramic Or Stainless Balls

PTFE PVDF Plastic Ball Bearings Corrosion Preventive With Ceramic Or Stainless Balls

    • PTFE PVDF Plastic Ball Bearings Corrosion Preventive With Ceramic Or Stainless Balls
    • PTFE PVDF Plastic Ball Bearings Corrosion Preventive With Ceramic Or Stainless Balls
  • PTFE PVDF Plastic Ball Bearings Corrosion Preventive With Ceramic Or Stainless Balls

    Product Details:

    Place of Origin: China
    Brand Name: TOB Plastic Bearing
    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
    Detailed Product Description
    Material: PVDF Plastic Material Basic Properties: Corrosion Preventive
    Long-time Working Temp.: 150℃ Ball Indentation Hardness: 80
    The Material Of The Rings & Cage: PVDF Or PTFE Material The Material Of Balls: Glass, Ceramic Or Stainless

     
    PVDF Corrosion Preventive Plastic Bearings
     
    As the typical type of fluoroplastic, PVDF have the most excellent anti-corrosion performance, Among them PTFE has the best anti-corrosion performance of all the engineering-plastics known to man. PTFE could be used in 180℃ and PVDF in 150℃.

     

    The Density of PVDF plastic bearings is 1.77 g/cm3, Sliding friction coefficient is 0.30, Short-time highest application temperature is 150℃.

     

    PVDF Corrosion Preventive Plastic Bearings could be used in all the Strong Acid and Alkali application, including HF and smoke formation H2SO4 HNO3 or HCL (98% above) etc., and PVDF Corrosion Preventive Plastic Bearings​ could be used in high temperature application. But PTFE has very low mechanical strength, easy to be out of shape and have large Dimension change when the temperature rise or reduce. So PTFE Corrosion Preventive Plastic Bearings​ couldn't be used in heavy load and high-speed occasion.

     

    Compared with PTFE, PVDF has better comprehensive performance. Generally the rings and cage were made with PTFE or PVDF, Balls were made with glass, ceramic or stainless.
     

    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

     
     

    Chemical properties of Engineer plastic
    Chemical Composition Material
    PI PEEK PTFE PVDF PA66 POM PP HDPE ABS
    Acrtate + + + (+) (+) + + (+) +
    Formic acid (10% water) + + + + - - + + +
    Ammonia (10% water) - + + + + (+) + + +
    Aether +   + + + + + +  
    Petrol + + + + + + (+) (+) (+)
    Bori acid (10% water)   + + (+) + + + + +
    Aminoform + + +   - - (+) - -
    Aeti aid 100% (+) - +   - - + + -
    Aceti aid (10% water) + + +   - (+) + + +
    HF     +   - - + + (+)
    Formaldehyde aqu (30% water)   + + + + - + + +
    Glycerin +   +   + + + + +
    Iodine, Glycol +   + (+) - (+) + + (+)
    K2Cr2O7 (10% water)     + + + - + + +
    KMnO4 (1% water) + + + + - (+) + + (+)
    2-Hydronyprpionic 10% +   + + - - + + -
    2-Hydronyprpionic 90% + + + + + (+) + + +
    Nad (10% water) + + + + + + + + +
    NaNO3 (10% water) +   + + + + + + +
    NaOH (50% water)   + + + + - + + +
    NaOH (5% water)     + + + - + +  
    Oxalic (10% water) + + + + (+) (+) + + +
    Tetracarp +   + + (+) + - - (+)
    H3PO3 100%   + +   -     + +
    H3PO4 (10% water)   + + + - - +   +
    NHO3 (2% water) + + + + - - + + +
    HCL (2% water) + + + (+) - - + + +
    H2SO4 98%   - +   - - + (+) -
    Soap liquid     + + + + + +  
    Alkaliliquid (10% water)     + + + + + + +
    Toluene + + + + + + + (+) -
    Water, cold + + + + + + + + +
    Water, hot   + + + (+) - + + +
    H2O2 (30% water)   (+) + + - - + + +
    H2O2 (0.5% water) +   + + - (+) + + +
    Asphalt +   +   (+) + (+) (+)  
    Note: + =resistant; (+) =partly resistant; - =non-resistant  

     

     

    PTFE PVDF Plastic Ball Bearings Corrosion Preventive With Ceramic Or Stainless Balls

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    ZHEJIANG TOP BEARINGS CO., LTD.

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