A precision rotating shaft with helical flights that conveys, compresses, melts, and meters polymer materials in extrusion systems.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| L/D Ratio | 20:1 to 40:1 | |
| Diameter Range | 25mm to 300mm | |
| Surface Finish | Ra 0.4μm or better | |
| Flight Clearance | 0.1-0.3% of diameter | |
| Compression Ratio | 2:1 to 4:1 | |
| Straightness Tolerance | 0.05mm/m |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
Rotating helical component for plasticizing and conveying polymer melts in extrusion systems.
A precision mechanical component that converts rotary motion into linear motion with minimal friction and high efficiency.
The screwdown mechanism is a critical component of heavy-duty rolling mill stands that controls the vertical position of the work rolls, enabling precise adjustment of the roll gap to achieve desired material thickness and quality during metal rolling operations.
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Manufacturer profiles associated with Screw Shaft.
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Abrasive fillers (glass fibers, minerals), corrosive additives, improper material transitions (cold starts), and barrel misalignment cause progressive flight wear that reduces output and mixing efficiency.
Visual inspection every 500 operating hours, dimensional measurement every 2000 hours, and non-destructive testing (magnetic particle) annually or after processing abrasive materials.
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