Crossed Roller Bearings Excellent Rotational Accuracy

Crossed roller bearings, due to the division of the inner ring or outer ring, after the roller and the spacer into the retainer, and cross roller collar fixed together to prevent mutual separation, so the installation of cross roller collar operation 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 ° with each other in a row,

The rollers are provided with an interval holder or a spacer so that the inclination of the rollers can be prevented from being intertwined with each other, thereby effectively preventing an increase in the rotational torque. 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. Reduce the shaft length and processing costs, thermal expansion lead to limited geometric changes.

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

7. Optimization of preload, stiffness, guide roller running high accuracy.

8. Simple but full of lubrication.