Why Can't a Gear Have Less Than 17 Teeth?

Press Release | Jan, 2024

A gear typically needs to have a minimum of 17 teeth for several reasons:

1. Contact ratio: The contact ratio is the ratio of the number of teeth in contact at any given moment to the total number of teeth on the gear. A higher contact ratio ensures smoother and more even distribution of load and reduces the risk of tooth failure. With fewer teeth, the contact ratio decreases, increasing the risk of premature wear, noise, and vibration.

2. Tooth strength: The number of teeth on a gear affects its strength. A gear with fewer teeth has larger tooth profiles, resulting in reduced tooth strength. This can lead to tooth breakage under heavy loads or high torque.

3. Backlash: Backlash is the play or clearance between meshing gears. A gear with fewer teeth has a larger backlash, which can result in less precise and accurate motion transmission.

4. Gear ratio limitations: In many applications, gears are used to transmit rotational motion and torque between two shafts. The gear ratio is the ratio of the number of teeth on the driven gear to the number of teeth on the driving gear. With fewer teeth, achieving specific gear ratios becomes challenging or impossible.

While it is technically possible to manufacture gears with fewer than 17 teeth, they are generally not preferred due to the limitations mentioned above.

About Zhejiang Toman Intelligent Technology Co., Ltd. (Toman)

Toman is a company that adheres to the strategic vision of to be the leader in the professional field, with the mission of innovation to drive customer value enhancement, and the business philosophy of WISE, ALWAYS KEEP STEP AHEAD. In operation since 2006, the company includes the complete range of Gear Hobbing Machine, Gear Cutting machine, gear machining compound machine tools, Gear Shaving Machine, automatic production units, automatic turning production lines, and MES manufacturing execution system, etc. TOMAN today, is recognised as an industry leader for machines in China.

Toman cutting machines:

CNC high precision gear Hobbing Machine, Gear Chamfering Machine, Gear Shaving machine, Gear Hobbing machine with integrated chamfering station etc.

-Profitable -Intelligent -Accurate

Our machines are suitable for commercial vehicle gear, passenger vehicle gear, construction machinery gear, especially for the processing of new energy vehicle gear.

For more information about cnc Gear Cutting Machines, please visit our website:

www.zjtoman.com

www.tomanmachines.com

For further information, please contact:

Sharon Gong

Master of Mechanical Engineering

Whatsapp/Wechat: +8613589398142

Mail: sharon@zjtoman.com

gongyx@zjtoman.com

Skype: sharon.gong525