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What is a cross roller bearing?

From:SINO BEARINGS2022-09-22
Cross roller bearing is a special type bearing with inner ring division and outer ring rotation. Since the inner ring or outer ring is fixed together with the cross roller shaft ring after the roller and the spacer are installed to prevent the cross roller shaft ring from separating from each other, it is easy to install the cross roller shaft ring. Because THE ROLLERS ARE ARRANGED in CROSS, ONLY one set OF cross roller shaft ring can bear the load in all directions, and the rigidity is increased by 3~4 times compared with the traditional model. At the same time, because the inner or outer ring of cross-roller bearing is a two-division structure, the bearing clearance can be adjusted, even if preload is applied, it can also obtain high precision rotation motion. Moreover, because of its special structure, it is usually used as joint bearings in industrial robots

Their rollers are spaced at right angles between the inner and outer wheels. They can bear loads from all directions at the same time (such as axial, thrust or momentum load). Because the roller is in linear contact with the track surface, the bearing has little possibility of elastic deformation under load. This type of bearing is widely used in industrial automatic robots, working machinery and medical facilities, where high rigidity, tightness and accuracy can be ensured at high speed are required.
In the cross-roller bearing, because the cylindrical rollers are arranged vertically to each other through the spacer retainer, one cross-roller bearing can bear loads in all directions, such as radial load, axial load and torque load. The size of the inside and outside the circle is a minimum of miniaturization, especially extremely thin type is close to the limit of small size, and high rigidity, so the most suitable for industrial robot joint department or rotate department, machining center of rotary worktable, manipulator rotate, precision rotary worktable, medical machine, meter, IC manufacturing devices use.