Ratchet Wrench Mechanism: One-Way Rotation Using Gear and Pawl for Quick Tightening| #tools

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This is the internal mechanism of a Ratchet Wrench, a fundamental hand tool in mechanical and automotive industries. The video reveals how this smart system allows torque to be applied in one direction while rotating freely in the opposite — eliminating the need to lift or reposition the tool after each turn.

At the core of this tool is a ratchet gear with angled teeth, and a spring-loaded pawl that locks into these teeth. When the handle is moved in the tightening direction, the pawl grips the gear and turns the fastener. On the return stroke, the pawl slips over the teeth, creating that familiar clicking sound — enabling quick and efficient motion in tight spaces.

This simple yet effective mechanism is widely used in tools, hoists, and even mechanical toys due to its one-way control of motion. It’s a perfect example of how mechanical engineering solves everyday problems with precision and ingenuity.


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