Conical twin screw barrels



Conical twin screw barrels

• Specification

  D35/75- 92/188mm 

Model	SJSZ-51	SJSZ-55	SJSZ-65	SJSZ-80	SSJZ-92
Screw Dia.(mm)	51/105	55/110	65/132	80/156	92/188
Max.Speed (rpm)	40	38	38	37	36
Main Motor(KW)	18.5	22	37	55	90
Output (KG/h)	80-100	100-150	150-250	250-280	380-700

• Material

38CrMoAlA(JIS SACM645)

Cr12MOV(JIS SKD-11) 
4Cr5MoSiV1(JIS SKD-61) 
42CrMo(AISI 4140)

9Cr18MoV
Stainless steel,etc.

• Parameter

Depth of Nitrated Layer: 0.5-0.8mm
Heat treatment: Nitriding 96 hours
Hardness of nitration: 900-1020Hv
Fragility of nitration: Less than grade 1
Surface roughness: Ra 0.4um

• Screw and barrel PBT Custom Designed for Your Applications


To provide speed to market and the tightest control over quality, Cowell industry has Barrel & Screw manufacturing facility in China mainland. Extensive quality control procedures follow each barrel and screw set from order date through delivery. And, many screws and barrels are stock items available for delivery right off the shelf. We also stocks the heater bands for extruder product lines, so you can order your replacement barrel with or with out them. Your choice!



• Replace or Upgrade for Performance


Continuous improvement and processing developments enhance production performance over the life of your extruder. Processes, raw materials and formulations change. Let us review your process with you. In many cases, we can improve melt quality, throughput rate, and wear life when compared with the technology originally supplied with your extruder. Either way, we will keep you productive.



• Product quality :

  Bimetallic screw and barrel, Twin screw and barrel, Standard nitrided screwbarrel.

• Application :

  Horizonal and vertical type Injection moulding machine , Extrusion processing machine/Profile extrusion machine. As well as rubber plastic moulding machine etc.

• Feature

  Used for PVC + 30% CaCo3, recylced plastic material,etc.