The transmission shaft is composed of a shaft tube, a telescopic sleeve, and a universal joint. The telescopic sleeve can automatically adjust the distance between the transmission and the drive axle. The universal joint ensures the variation of the angle between the output shaft of the transmission and the input shaft of the drive axle, and achieves equal angular velocity transmission between the two shafts. It is generally composed of universal joints, cross shafts, cross bearings, and flange forks. The transmission shaft universal joint used in the Steyr series heavy-duty vehicles adopts roller cross shaft bearings, coupled with short and thick cross shafts, which can transmit large torque. A butterfly spring is installed on the bearing end face to compress the rollers. The end face of the cross shaft is equipped with reinforced nylon gaskets with spiral grooves, which can prevent sintering when transmitting power at large angles or large turning distances.

Henan Tongxin Transmission Co., Ltd. has its own "Technology Center", focusing on continuous improvement of product quality and innovation of technical processes. With over 40 patented properties, we have pioneered the forging of blank raw materials with "hollow cores and no waste edges" in the industry, and our technology has reached the international priority level. The company relies on production technology, sophisticated equipment, efficient production organization capabilities, strict quality control system, and excellent full-service model; With the quality policy of "pursuing zero defects and satisfying customers", we aim to transform the enterprise into a transmission shaft service platform. Adhering to the business philosophy of "seeking profits from products, not from customers", we aim to achieve win-win cooperation with our customers.

The company's products have covered micro, light, medium, and heavy transmission shafts, as well as transmission shafts for railway locomotives, petroleum machinery, and engineering machinery, totaling over 30 series and more than 3800 types. Concentric Axis, a friend of Dezai, has products all over the country. It has long-term cooperation with Yutong, XCMG, Dayun, Shandong Automobile and many other large OEMs, and is exported to the United States, South Korea, Türkiye and other countries.

Henan Tongxin Transmission, undertaking the world, creating tomorrow, and working together for the future. We adhere to the vision of creating a long-lasting company and the mission of revitalizing the Central Plains economy and serving the global automotive industry; Continuously exploring and advancing, forging ahead, continuously exerting the spirit of craftsmanship, constantly improving the service system, achieving customers with higher quality products, achieving employees and returning investors with better business performance, making greater contributions to the development of China and even the global automotive industry, and promoting social progress!