Ratchets Wheel

A ratchet is a mechanical device that allows continuous linear or rotary movement in mere one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and equipment. A rachet includes a round equipment or a linear rack with the teeth, and a pivoting, spring-loaded finger called a pawl (or click, in clocks and watches[1][2]) that engages the teeth. The teeth are uniform but asymmetrical, with each tooth having a moderate slope on one edge and a much steeper slope on the various other edge.

When the teeth are moving in the unrestricted (i.e. forward) path, the pawl very easily slides up and over the gently sloped edges of the teeth, with a springtime forcing it (frequently with an audible ‘click’) in to the depression between your teeth as it passes the Ratchets Wheel suggestion of every tooth. When one’s teeth move in the contrary (backward) direction, however, the pawl will catch against the steeply sloped advantage of the initial tooth it encounters, thereby locking it against the tooth and stopping any further motion for the reason that direction.


Angle of teeth 60°

Material S45C

Heat treatment Induction hardened teeth

Tooth hardness 50 ~ 60HRC


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