Gold Member Since 2012
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Zhejiang Zhongyang Screw Manufacturing Co., Ltd.

Screw for Rubber Machinery, Screw Barrel, Rubber Screw Barrel manufacturer / supplier in China, offering Customize Rubber Screw Barrel Rubber Screws, Parallel Double Screw Cylinder for PVC Pipe Extrusion, Plastic Machinery Bimetallic Conical Twin Screw and Barrel and so on.

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Supplier Homepage Product Screw barrel for rubber machinery Customize Rubber Screw Barrel Rubber Screws

Customize Rubber Screw Barrel Rubber Screws

FOB Price: US $50 / Piece
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $50/ Piece
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Production Capacity: 1500 Sets/Month
Transport Package: Wooden Case
Payment Terms: L/C, T/T, Western Union

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Basic Info
  • Model NO.: rubber screw barrel
  • Type: General Rubber Machinery
  • Type of Tire Machinery: Rubber Regeneration Machinery
  • Specification: ISO9001: 2008
  • HS Code: 84779000
  • Certification: ISO
  • Type of General Rubber Machinery: Rubber Extruder
  • Trademark: Zhongyang
  • Origin: Zhoushan
Product Description
Rubber Screw barrel, rubber extrusion screw barrel, plastic machinery screw barrel, pins cylinder for rubber machinery

Diameter of pin screw and barrel: Φ 75mm-Φ 200mm
Diameter of cold feed or hot feed screw and barrel: Φ 30mm-Φ 300 mm
L/D ratio: 12-18

Technical Information

Base Materials:
1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)
3)4Cr5MoSi V1 (JIS SKD-61)

Bimetallic alloy materials:
1)Fe-based alloy
2)Ni-based alloy/Deloro alloy
3)Co-based alloy
4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide

Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting

Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: >=950HV
Chrome-plating layer depth: 0.025-0.085mm
Bimetallic layer depth: 3mm

Warranty and service: 1 year

Our advantages:
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly

Experienced manufacture, we will be the best choice.
Type Model Hardness
Wear resistant Corrosion resistant Thickness Application
Glass Fiber
PTA weld ZB1 38CrMoAlA
Ni-base alloy
45-58 Excellent Special excellent 1.5~3mm Under 10%
Ni-base alloy
45-58 Special excellent Excellent 1.5~3mm Under 15%
Nitriding Nitrided HV more than 800 Good Good 0.25mm /
Types of Bimetallic Screw

For barrels, there are 4 kinds of bimetallic alloys against all types of wear:
Alloy Type EJS01 Alloy EJS02 Alloy EJS03 Alloy EJS04 Alloy
Wear resistance Very good Good Very good Excellent
Corrosion resistance Good Very good Very good Very good
Alloy components Fe+Ni+Cr+B Ni+Cr+Co+B Ni+Cr+Co+V+B Ni+Cr+Wc+Co+B
Hardness (HRC) 58~64 50~58 55~60 56~62
Temperature area (°C) less than 400 less 450 less than 450 less than 600
Coefficient thermal RT-250°C 11.0 x 10 -6    11.0 x 10 -6 11.5 x 10 -6 11 x 10 -6
Expansion (/°C) RT-400°C 11.4 x  10 -6 11.4 x  10 -6 12.4 x  10 -6 12 x  10 -6
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