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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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