The common structural forms of worm gears mainly include the following types, each with different characteristics and applicable situations:

Integral: With a simple and compact structure, it is usually used in situations with small diameters and light working conditions, such as bronze worm gears with diameters less than 100mm. ‌

Wheel rim type (or gear ring type): using a combination of bronze gear rings and cast iron or steel wheel cores through interference fit, suitable for medium size and high speed working conditions. ‌

Bolt connection type: The ring gear and wheel core are fixed by bolts, making it easy to disassemble and maintain. It is commonly used in large-sized worm gears or situations where the ring gear needs to be replaced frequently. ‌

Embedded casting (or integral casting): The gear ring and wheel core are combined through embedded casting technology, with a sturdy structure, suitable for large-scale production scenarios. ‌