With the continuous development and improvement of industrial technology, the war between precision bearings and ordinary bearings in the bearing market is also changing silently. The development of high-tech has become a powerful propellant for high-precision crossed roller bearings. A large number of high-tech industries such as industrial robots, maintenance robots, welding robots, and high-speed rail with hollow rotating platforms have developed rapidly. It has gradually become a leader in the rapid development of the industrial industry. Their rapid development also provides opportunities for the surrounding industries to take off.

High-precision industrial robot crossed roller bearing, it is a kind of industrial common bearing with special structure. A crossed roller bearing is a bearing with a compact structure in which the rollers are arranged orthogonally between the inner ring and the outer ring. The rolling surface is in line contact, so the elastic deformation caused by the bearing load is extremely small, and it can simultaneously carry complex combined loads such as radial load, axial load and moment.

Due to the special structure of the crossed roller bearing, it can withstand forces in different directions. They are widely used in rotating parts of industrial robots, machine tools, and medical equipment that require small, high rigidity and high rotational accuracy. The industrial robot joint crossed roller bearing has various structures such as attached cage, attached spacer block and full-roller type. The rollers are suitable for heavy loads at low speeds. The sealing type of the crossed cylindrical roller bearing is equipped with a special synthetic rubber sealing ring on the side of the bearing, which has a very good sealing effect against dust and grease leakage.

In a crossed roller bearing, since the cylindrical rollers are arranged perpendicular to each other through spacers, a single crossed roller bearing can withstand loads in all directions, including radial load, axial load, and moment load. The size of the inner and outer rings is minimized, and the ultra-thin type is close to a very small size and has high rigidity, so it is very suitable for the joint part or rotating part of industrial robots.

Advantages of joint crossed roller bearings for industrial robots:

1. Excellent rotation accuracy. The internal structure of the crossed roller bearing adopts the rollers arranged at 90° perpendicular to each other. There are spacers or spacers between the rollers, which can prevent the inclination of the rollers or the friction between the rollers, and effectively prevent the rotation torque. Increase. In addition, there is no contact phenomenon or locking phenomenon of one side of the rollers; at the same time, because the inner and outer rings are divided structures, the gap can be adjusted, and even if a preload is applied, high-precision rotational motion can be obtained.

2. Simplified operation and installation. The outer or inner ring, which is divided into two parts, is fastened together after the rollers and cages are installed, so it is very easy to install.

3. Bear large axial and radial loads. Because the rollers are arranged perpendicular to each other on the 90° V-groove rolling surface through spacers, this design enables the crossed roller bearing to withstand large radial loads, axial loads and moment loads. direction load.

4. Significantly save installation space. The size of the inner and outer rings of the crossed roller bearing is minimized, especially the ultra-thin structure is close to a very small size, and has high rigidity, so it is suitable for the joint parts or rotating parts of industrial robots, and the rotary table of machining centers , Manipulator rotating part, precision rotary table, medical instruments, measuring instruments, IC manufacturing equipment, etc. are widely used.

The above is the whole content of the advantages of the industrial robot joint crossed roller bearing. Generally speaking, in the industrial robot bearing, the crossed roller bearing is a very suitable kind of bearing, which can make the joints of the industrial robot more flexible, and it has Excellent rotation accuracy, very simple in operation, the bearing can carry large axial and radial loads, and can greatly save installation space