This is a Rack and Pinion Jack — a simple and powerful mechanism used to lift heavy loads.When the pinion gear rotates, it drives the rack in a straight line. The rack is connected to a lifting platform, converting rotational motion into linear motion.
The gear teeth ensure precise movement, while the mechanical advantage allows you to lift weight with less effort.
Rack and pinion jacks are often used in car lifts, stage platforms, and industrial machinery — combining strength, control, and reliability in a compact design.
With just a crank, you can lift tons — thanks to clever mechanical principles at work.
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