Structure and use of cross-roller bearings (application areas): Cross-roller bearings Their rollers are arranged at right angles to each other between the inner and outer wheels. They can withstand loads from all directions (such as axial, thrust or momentum loads). Since the roller is in contact with the track surface, the bearing is less likely to be elastically deformed by the load. In the cross roller bearing, since the cylindrical rollers are vertically arranged by the spacers on the V-shaped groove rolling surface of 90°, one cross roller bearing can withstand radial load and axial load. And load in all directions, such as torque load.

    The size of the inner and outer rings of the crossed roller bearing is minimized. The extremely thin type of the crossed roller bearing is a small size close to the limit and has high rigidity, so it is most suitable for the joint or the rotating part of an industrial robot. The use of rotary tables, robot rotating parts, precision rotary tables, medical equipment, gauges, and IC manufacturing equipment in machining centers.

    Features: Crossed roller bearings, because of the split inner ring or outer ring, after the roller and spacer are installed, and the cross roller collar is fixed together to prevent separation from each other, so install the cross roller collar The operation is simple. Since the rollers are arranged in a cross arrangement, only one set of crossed roller collars can withstand loads in all directions, and the rigidity is increased by 3 to 4 times compared with the conventional model. At the same time, the NTN imported bearing fork roller bearing has a two-part structure due to the inner ring or the outer ring of the crossed roller bearing, and the bearing clearance can be adjusted, and even if a preload is applied, a high-precision rotational motion can be obtained.

    Uses: This type of bearing is widely used in industrial robots, work machines and medical facilities, etc., where high rigidity, tightness and high speed are required to ensure accuracy.