Hand-Operated Variable Speed Reducer
Compact speed changer with cone pulley system and hand belt shifter for multiple ratios in laboratory equipment and small machinery. HTS 8483.40.50 classification applies to manual belt position selection mechanism. Used in ventilators, centrifuges, and bench grinders.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If installed in turbo or supercharger assemblies
Speed changers integral to specific pumps and fans classified as parts thereof.
If imported as replacement gear cluster only
Gear sets without housing or mounting provisions classified as parts, not complete changers.
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Import Tips & Compliance
• Provide belt tension adjustment mechanism photos to demonstrate manual ratio selection
• Specify frame material and maximum RPM ratings for proper engineering classification
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