Worm gearboxes consist of a worm screw (a threaded shaft) and a worm wheel (a gear made out of bronze). These components work together to provide speed reduction and torque amplification in power transmission systems. The worm screw is the input shaft, and it engages with the worm wheel, which is the output gear. Worm gearboxes have a right-angle configuration, with the input shaft and output shaft oriented at 90 degrees to each other. This feature allows for compact and space-saving designs in applications where space constraints are a concern. A notable characteristic of worm gearboxes is their self-braking feature. When the gearbox is not actively turning (the input shaft is stationary), the load cannot easily drive the input shaft, which provides a natural braking effect and can prevent backlash in some applications when ratio is over 30. Worm gearboxes have lower mechanical efficiency compared to other types of gearboxes, resulting in some energy loss as heat.