Rack and pinion drives are an age-old mechanism widely used for converting ... For long and heavy axis drives, such as those found in the machine tool and aerospace industries, rack and pinions ...

All drilling ... drive mechanism are changed by a hand wheel on the head. The spindle must be revolving when this is done. Quill assembly: The spindle rotates within the quill on bearings. The quill ...

It consists of a circular gear (pinion) meshing with a straight gear (rack), commonly used in steering mechanisms and machine tools. This uses a screw-like 'worm' gear that meshes with a larger ...