What are the principles and characteristics of joint cross bearing?

Principle of joint cross bearing
Joint cross bearing is also called cross roller bearing. Their rollers are arranged at right angles to each other at intervals between the inner and outer wheels. They can withstand loads from all directions at the same time. Since the roller is in linear contact with the track surface, the joint cross bearing is less likely to be elastically deformed by the load.
Joint cross bearing is widely used in industrial robots, work machines and medical facilities, where high rigidity, tightness and high speed are required to ensure accuracy.

The principle of joint cross bearing:
The rollers of the joint cross bearing are mainly cylindrical rollers, and the cylindrical rollers are arranged at right angles to each other at intervals between the inner and outer rings of the bearing. They can withstand loads from all directions (such as axial, thrust or momentum loads).
The internal structure of the joint cross bearing is arranged at 90° perpendicular to each other by rollers. The spacers or spacers are arranged between the rollers to prevent the rollers from tilting between the rollers and prevent the rotation torque. increase.
In addition, the contact phenomenon or the locking phenomenon of the roller does not occur; at the same time, since the inner and outer rings are divided structures, the gap can be adjusted, and even if it is pre-compressed by the family, high-precision rotary motion can be obtained.

Joint cross bearing features:
1, joint cross bearing has excellent rotation accuracy.
2, joint cross bearing operation installation simplification: is divided into 2 parts of the outer ring or inner ring, after loading the roller and the retainer, is fixed together, so the installation is very simple.
3. The joint cross bearing is subjected to large axial and radial loads: because the rollers are vertically aligned with each other through the spacers on the 90° V-groove rolling surface, this design allows the crossed roller bearings to be It is subjected to loads in all directions such as radial load, axial load and moment load.
4, joint cross bearing greatly saves installation space: the size of the inner and outer rings like ZYSL crossed roller bearings is minimized, especially the ultra-thin structure is close to the limit of small size, and has high rigidity, so it is most suitable for industrial robots A wide range of applications such as joint parts or rotating parts, rotary tables for machining centers, robot rotating parts, precision rotary tables, medical instruments, measuring instruments, and IC manufacturing equipment.

5.joint cross bearing high speed capability.
6.joint cross bearing reduces shaft length and machining costs, and thermal expansion results in limited variations in geometry.
7.joint cross bearing adopts nylon separator, low moment of inertia, low starting torque and easy to control angular division.
8.joint cross bearing optimizes the pre-tightening force, the rigidity is large, and the guiding roller runs with high precision.
9.joint cross bearing carburized steel provides excellent impact resistance and surface abrasion resistance.
10.joint cross bearing is simple but fully lubricated = the groove rolling surfaces are arranged perpendicular to each other by spacers. This design allows the crossed roller bearings to withstand large radial loads, axial loads and moment loads. Directional load.

ZYSL company specializes in joint cross bearing for many years. All raw materials and accessories have been carefully selected to ensure a good user experience.

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