Roller bearings are rolling bearings that use a short cylindrical, conical or lumbar drum as the rolling element. There are mainly structural types such as a radial short cylindrical roller, a double row radial spherical roller, a tapered roller and a thrust roller.

The ball bearing is a kind of rolling bearing, and the ball ball is installed between the inner steel ring and the outer steel ring to withstand a large load.The ball bearing mainly consists of four basic components: ball, inner ring, outer ring and retainer.

Metal linear bearings are linear motion systems that are produced at low cost for use with infinite strokes in conjunction with cylindrical shafts. Widely used in sliding parts of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, printing machinery.

Needle roller bearings are roller bearings with cylindrical rollers that are thin and long relative to their diameter. This type of roller is called a needle roller. Despite its small cross-section, the bearings still have high load bearing capacity.