Lifting and transportation machinery is often in intermittent motion, repeatedly in a working state of starting, braking, and forward and reverse operation; Although the operating speed is not high, it often bears heavy loads; Most of them work continuously in harsh environments such as dust or seawater corrosion for a long time. The entire series of Didabe products have decades of successful matching experience in domestic and foreign clients, and are applied in gearboxes, walking mechanisms, lifting mechanisms, variable amplitude mechanisms, rotary mechanisms, and other occasions. They have the characteristics of high load-bearing capacity, easy maintenance, and long service life, ensuring efficient, continuous, and reliable operation of customer equipment.