What Are Small Gears?
Feb 19, 2025| A small gear refers to a gear with a relatively small modulus (usually less than 1). The smaller the modulus of the small gear, the smaller the diameter of the gear, and the smaller the transmitted torque, making it suitable for low-power, high-speed applications.
Common small gears include spur gears, helical gears, worm gears, etc.
Straight tooth small gear: with straight tooth surface and gear shaft perpendicular to the transmission plane, it is widely used and suitable for high-speed and low load transmission.
Helical tooth small gear: The tooth surface is slanted, and the gear shaft is not perpendicular to the transmission plane. The shape of the helical teeth can greatly reduce the noise of the gear, making it suitable for high-precision and low-noise transmission.
Worm gear: A transmission method composed of a worm gear (also known as a worm) and a small gear, with a simple structure and a large transmission ratio, suitable for situations that require a large transmission ratio.
Small gears are widely used in various fields such as mechanical transmission, robotics, CNC machine tools, aerospace, etc. For example, many transmission parts on a lathe are driven by small gears. In addition, small gears are also used in low-power applications such as power tools and toys.