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