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Rubber screw

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Rubber screw

Rubber screw

  • Specifications:
     
    Rubber pin screw barrel diameter: Φ 75mm - Φ 200mm
     
    Rubber cold and hot feeding screw barrel diameter: Φ 30mm - Φ 300mm
     
    Aspect ratio: 12-18
     
     
     
    Substrate material:
     
    1)38CrMoAlA(JIS SACM645)
     
    2)42CrMo(AISI 4140)
     
    3)4Cr5MoSi V1 (JIS SKD-61)
     
     
     
    Treatment process:
     
    heat treatment
     
    Nitriding treatment
     
     
     
    Technical parameters:
     
    Nitriding depth: 0.50mm-0.80mm
     
    Nitriding hardness: 900-1000hv
     
    Nitriding brittleness: < = grade 1
     
    Surface roughness: RA 0.4
     
    Screw straightness: 0.015mm
     
    Hardness of surface chromium plating after nitriding: ≥ 950hv
     
    Thickness of chromium plating layer: 0.025 ~ 0.085mm
     
    Double alloy depth: 3mm