The recirculating-ball gear is comprised of what type of gear?

The correct answer is worm gear, as a recirculating-ball gear typically utilizes a worm gear mechanism as part of its design. In this type of gear system, the worm gear is responsible for converting rotary motion into linear motion, which is essential in applications that involve steering systems, such as in vehicles. The unique aspect of the worm gear is its ability to provide a high reduction ratio in a compact space, making it particularly well-suited for steering applications.

This functionality is crucial for allowing precise movements and adjustments in steering while providing a mechanical advantage. The design also minimizes backlash, which enhances the responsiveness and control of the mechanism. Understanding the role of worm gears in recirculating-ball steering mechanisms helps illustrate their importance in engineering and mechanical design, particularly in safety-critical systems like automotive steering.