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Worms
A worm is a threaded shaft that meshes with a larger toothed wheel to provide high-ratio speed reduction in a compact, right-angle drive. Its multiple starts allow precise control, strong thrust capacity, and shock resistance. The sliding contact offers self-locking, ideal for hoists, indexing tables, and conveyors. Download free 3D CAD models (STEP files) of worms to check thread geometry and optimize your gearbox design.