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sheen screw


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1st Year

Cincinnati Konos50 Conical Twin screw



( Negotiable ) Get Latest Price



1 Set

film wrapped in wodden case

20 working upon receipt of 30% deposit

300 Set per Month

T/T, L/C, Western Union


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Product Specification

Material : 38CrMoALA(JIS SACM645); 4Cr5MoSiv1(JIS SKD61) Tempering hardness : HB240-280 Nitriding hardness : HV900-1020 Nitriding thickness : 0.5-0.8mm Roughness of the surface : Ra0.4um Screw diameter : Φ35/75-Φ92/188

Product Description


Material: 38CrMoALA(JIS SACM645); 4Cr5MoSiv1(JIS SKD61)
Tempering hardness:HB240-280
Nitriding hardness:HV900-1020
Nitriding thickness:0.5-0.8mm
Roughness of the surface:Ra0.4um
Screw diameter:Φ35/75-Φ92/188
Fragility of nitration:2class

Our screw and barrel processing flow
Customer order----Product design(customer drawing)---Production flow arrangement----Material Procurement---Hardening and tempering----Drilling---Rough
turning---Rough thread rolling(Alloy spray welding)---alignment---Fine thread rolling---Mixing---Alignment---High frequency
treatment---Alignment---Polishing---Grinding----120 hours Nittriding treatment---Acid piclking----Polishing---Chrome plating----O.D.Grinding---Packaging and

Packing detail: film wrapped in wodden case
delivery:         20 working upon receipt of 30% deposit

 Main Base Material
  • 38CrMoAlA(JIS SACM645) 
  • Cr12MOV(JIS SKD-11) 
  • 4Cr5MoSiV1(JIS SKD-61) 
  • 42CrMo(AISI 4140) 
Bimetallic Alloy Materials
  • Fe-based alloy  
  • Ni-based alloy/Deloro alloy
  • Co-based alloy
  • NiCo-based alloy
  • Tungsten carbide/Wolfram carbide 
Nickel alloy plating.treatment:
Bimetallic Screw  Plasma Alloy Coating Spraying
Bimetallic Barrel/Cylinder Centrifugal Casting (Inlay Alloy)
Depth of Bimetallic Layer >2mm
Hardness of Bimetallic Layer HRC55°-72°
Roughness of the surface Ra0.4um
Linearity of the screw  ≤0.015mm
Linear axis limit   ≤0.02mm
Hardness after Hardening & Tempering HB240-280
Fragility of Nitration  ≤Two class
Surface Treatment Heat Treatment
High Frequency Treatment
Nitriding treatment(120 Hours)
Depth of Nitrided Layer: 0.5-0.8 mm
Hardness of Nitrided Layer: 900-1020Hv (HRC56°-65°)
Hard Chrome Plating treatment:
Thickness of Hard Chrome Plating Layer: 0.05-0.10mm
Hardness of Hard Chrome Plating Layer: 950HV
Nickel alloy plating.treatment:
Bimetallic Barrel/Cylinder: Centrifugal Casting (Inlay Alloy)
Bimetallic Screw: Plasma Alloy Coating Spraying
Depth of Bimetallic Layer: >2mm
Hardness of Bimetallic Layer: HRC55°-72°


  Cincinnati Konos50 Conical Twin screw Cincinnati Konos50 Conical Twin screw Cincinnati Konos50 Conical Twin screw Cincinnati Konos50 Conical Twin screw

Contact Us

Contact Person : dandelion

Company:sheen screw

Address:Zhoushan, Zhejiang, China,


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