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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
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