Specifications for Parallel Twin Screw/Barrel

Source of Material:

Japan Daido SACM645 Standard

Temper：HRC 24°-26°

Water Hole (oil hole): Parallelism 0.15/M  Screw

Nitrogen Treatment: 900~950HV 

Depth of Nitration

Roughness: Ra0.4µm (or less)

Parallelism: Within ±0.005°                      Barrel

Straightness: Within 0.03mm/M               Screw

Bimetallic Material: Fe-Ni based alloy

Processing Range：ø65- ø150

Length-Diameter Ratio：L/D18-32
              Overall Nested Type  about 1000L
            
              Overall Sealing Type  about 600L

Bimetallic Technique of Barrel: HRC 60°-68°

Bimetallic Hardness 1.5-2mm
Bimetallic Depth