Hand-Crank Variable Speed Gearbox
Manual crank-operated continuously variable transmission for testing equipment. HTS 8483.40.5080 for manually manipulated speed changers. Friction drive or cone pulley design allows infinite ratio selection by crank position.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If lab testing equipment integral part
Testing machine gearboxes classified with test equipment in Chapter 90.
If for semiconductor test handlers
Precision test equipment gearboxes have semiconductor-specific provisions.
Not sure which classification is right?
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Import Tips & Compliance
• Demonstrate hand crank operation with video/mechanism drawings
• Often used in labs qualifying for scientific instrument exemptions
• Distinguish from power transmission (8501) by manual operation
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