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Precision Crossed Roller Bearing Can Bear The Load In All Directions
Sep 12, 2017

The roller of the crossed roller bearing is arranged at right angles to each other between the inner and outer wheels. They can bear the load from each direction (such as axial, thrust or momentum load, etc.). Because the roller and the track surface into a linear contact, so the bearing by the load and the possibility of elastic deformation is very small. This type of bearing is widely used in such as industrial robots, work machinery and medical facilities, need to be high rigidity, close and high speed can still ensure the accuracy of the occasion.

The crossed roller bearing, when the inner ring or outer ring is divided, is fixed to the crossed roller collar after being fitted with the roller and the spacer holder to prevent separation from each other. Therefore, when the cross roller shaft is mounted simple. As the rollers are arranged in cross, so only a set of cross-roller ring can withstand the load in all directions, compared with the traditional models, increased rigidity 3 to 4 times. At the same time, because the crossed roller bearing inner ring or outer ring is a two-split structure, the bearing clearance can be adjusted, even if the preload is applied, can also get high-precision rotary motion.

1,with excellent rotation accuracy

The internal structure of the cross roller bearing is 90 ° arranged in parallel with each other. The roller is equipped with an interval holder or a separation block to prevent the roller from tilting between the rollers and prevent the rotation torque The increase. In addition, since the contact phenomenon or the locking phenomenon of the roller does not occur, and since the inner and outer rings are divided structures, the gap can be adjusted, and even if a preload is applied, a high-precision rotational motion can be obtained.

2,operation and installation simplification

The outer ring or the inner ring, which is divided into two parts, is fixed together after the rollers and the retainers are loaded, so that the operation is very simple during installation.

3,to withstand greater axial and radial load

Because the rollers are arranged vertically with each other through a spacing retainer on a 90 ° V-groove rolling surface, this design allows the cross roller bearing to withstand all of the radial load, axial load and moment load Direction of the load.

4,substantial savings in installation space

The size of the inner and outer rings of the cross roller bearing is minimally miniaturized, especially the ultra-thin structure is close to the limit of the small size, and has high rigidity, so the most suitable for industrial robot joints or rotation parts, machining center rotation Workstations, manipulator rotary parts, precision rotary table, medical equipment, measuring instruments, IC manufacturing devices and other widely used.

5.To reduce the shaft length and processing costs, thermal expansion leads to limited geometric changes

6.The use of nylon separator, low inertia, low starting torque, easy to control the angular division

7.Optimize preload, stiffness, high precision guide roller operation

8.Simple but full of lubrication.