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Do you know the advantages of crossed roller bearings

wallpapers News 2020-03-26

The main performance of crossed roller bearings

The internal structure of the crossed roller bearing adopts rollers arranged at 90 ° to cross each other vertically. Spacer or spacers are installed between the rollers, which can prevent the tilting of the rollers or the mutual grinding between the rollers, which effectively prevents the rotating torque. Increase. In addition, one side of the roller will not contact or lock up. At the same time, because the inner and outer rings of the standard cross roller bearing are divided, the gap can be adjusted, and even if pre-pressure is applied, high-precision rotary motion can be obtained.

Advantages of crossed roller bearings

1. Simplified operation and installation The standard cross roller bearing is divided into two parts, the outer ring or the inner ring, which are fixed together after the rollers and cages are installed. During installation, it can be adjusted by fine-tuning the connecting bolts and fixing flanges. It achieves the ideal load condition, so the operation during installation is very simple.

2. Withstand large axial and radial loads. Because the rollers are arranged vertically with each other through the spacer on the 90 ° V-groove rolling surface, this design allows the crossed roller bearing to bear a larger Loads in all directions, including radial load, axial load, and moment load.

3. Significant installation space-saving The size of the inner and outer ring of the crossed roller bearing is minimized, especially the ultra-thin structure is a small size close to the limit and has high rigidity, so it is most suitable for the joint parts or rotating parts of industrial robots. , Rotary table of the mechanical processing center, manipulator rotating part, precision rotary table, medical instrument, measuring instrument, IC manufacturing device, etc.

4. There are many types and structures of derivatives, which are suitable for various applications. Based on the basic cross roller bearings, many cross roller bearings with different structures are derived to facilitate the use of different requirements. Divided from broad categories, it can be divided into basic cross roller bearings, high rigidity cross roller bearings, ultra-thin cross roller bearings; from the external structure; there are inner ring split type, outer ring split type, inner and outer Integrated ring type; divided from the internal structure, it can be divided into full-roller type, metal window type cage type, nylon or metal isolation block type; according to the connection method, there are the bolt connection type, rivet connection type, and spring There are many types of discs and so on.

5. high-speed capability;

6. reduce shaft length and processing costs, thermal expansion causes limited changes in geometric dimensions;

7. using nylon divider, low inertia, low starting torque, easy to control angular division;

8. Optimize the pre-tightening force, high rigidity, and high running accuracy of the guide roller;

9. Carburized steel provides excellent impact resistance and surface wear resistance;

10. Simple but fully lubricated.

Uses of High Precision Crossed Roller Bearings

1. Machine tools: turret knife indexing, indexing disk, loader;

2. Robot: rotation, joint drive;

3. Semiconductor manufacturing equipment: handling robot, inspection platform;

4. Liquid crystal manufacturing equipment: driving robot, inspection platform, photosensitizer application roller drive;

5. Printing machine: driven by photosensitizer application roller.

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Tag: Bearings   crossed   Roller