A ratchet is a mechanical device which allows continuous linear or rotary movement in mere one direction while stopping motion in the contrary direction. Ratchets are trusted in machinery and equipment. A rachet consists of a round equipment or a linear rack with teeth, and a pivoting, spring-loaded finger called a pawl (or click, in clocks and watches) that engages the teeth. The teeth are uniform but asymmetrical, with each tooth having a moderate slope using one Ratchets Wheel advantage and a much steeper slope on the other edge.
When the teeth are moving in the unrestricted (i.electronic. forward) path, the pawl easily slides up and over the softly sloped edges of one’s teeth, with a spring forcing it (often with an audible ‘click’) in to the depression between the teeth as it passes the suggestion of every tooth. When one’s teeth move in the opposite (backward) direction, nevertheless, the pawl will capture against the steeply sloped advantage of the first tooth it encounters, therefore locking it against the tooth and avoiding any further motion for the reason that direction.
Angle of teeth 60°
Heat therapy Induction hardened teeth
Tooth hardness 50 ～ 60HRC