High-Lead Ball Screw for Injection Molding Machines
Large-diameter ball screw (50-80mm) with fast lead for rapid clamp movement in plastic injection molding presses. High thrust capacity handles molding pressures up to 2000 tons, under HTS 8483.40.80.00 as industrial roller screw.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designed exclusively for plastics molding machinery
Parts of machinery for working plastics specifically classified under 8477.
If imported with integrated bearing housings as complete assembly
Housed bearing assemblies incorporating roller screws classified in 8483.20.
If used in heavy forging or forming presses
Parts of other metal forming/forging machinery go to Chapter 84 headings for that equipment.
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Import Tips & Compliance
• Document preload method (double-nut or spacer) and max thrust load in engineering data sheet
• Include heat treatment specs (hardness HRC 58-64) to verify industrial transmission classification
• Separate from hydraulic components to avoid classification as complete press parts
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