Structure and composition of worm gear box
Worm gear box, also known as worm gear reducer or worm gear reducer, is a mechanical transmission device composed of worm gear, worm gear, shaft, bearing and chassis. It achieves deceleration and torque amplification through the meshing of worm gear and worm wheel. ‌‌

Structure and composition: The core structure of a worm gear box includes a worm wheel (the paired gear of a worm) and a worm (usually a cylindrical helical gear), which transmit power through sliding friction meshing. The box body is mostly made of gray cast iron or ductile iron, and heavy-duty models may use cast steel. The box body is connected by bolts and locating pins through the box seat and cover to ensure the accuracy of the bearing hole axis. Internally equipped with rolling bearings to support the shaft system, and equipped with lubrication systems (such as oil level indicators, oil drain holes) and ventilation covers to balance the air pressure inside the box. Some models (such as the MOTOX-N series) use concave tooth meshing technology, with the worm gear made of centrifugally cast bronze and hardened to improve wear resistance and transmission efficiency. ‌12

Working principle and characteristics: The worm gear box drives the worm wheel through the rotation of the worm gear, achieving a large transmission ratio (up to 100:1 or more) and high torque output, while also having self-locking function (preventing reverse driving of the load). Its transmission relies on sliding friction, resulting in smooth operation and low noise, but the transmission efficiency is relatively low (usually 50% -90%, affected by materials and lubrication). The input shaft and output shaft are arranged at a right angle, supporting solid or hollow shafts (such as flat keys and shrink disc connections), and the installation method is flexible. ‌