There are three general categories of universal joints, and there are many other categories under these three, and the precision universal joint is also.
The precision universal joint is used in transmission applications where the angle between two axes on the same plane of the connection space is β≤45°. It can be divided into single cross-type, double cross-type, retractable type, and flange type. It has the characteristics of large transmission torque, long service life, and wide application range. Its application especially provides favorable conditions for the technological transformation of the metallurgical industry and the upgrading of mechanical products. In the middle, a block body and a sliding bearing can be used to transmit large torque, and the use of needle roller bearings can increase the speed, theoretically reaching 4000 rpm. The special design can reach 10,000 revolutions per minute.
Although there are many types of universal joints, the quality is uneven. The main problem is the universal joint manufacturer. To develop, the universal joint manufacturer must pay more attention to quality.