What is the development of cross roller bearings?
The development of cross roller bearings is that with the development of science and technology, more and more words are unknown to us. We may have seen them in life but we don’t know what they are.
Cross roller bearings, because the inner or outer ring is divided, after the rollers and cage are installed, they are fixed with the crossed roller ring to prevent them from being separated from each other. Therefore, it is necessary to operate the cross roller ring when installing it. Because the rollers are arranged crosswise, only one set of crossed roller ring can bear the load in all directions. Compared with the traditional model, the rigidity is increased by 3 to 4 times. At the same time, because the inner or outer ring of the cross roller bearing has a two-part structure, the bearing clearence can be adjusted, and even if a preload is applied, a high-precision rotary motion can be obtained.
Features of Cross roller bearings:
1, with excellent rotation accuracy
The internal structure of cross roller bearings adopts rollers arranged at 90 ° to cross each other perpendicularly.
The cage are installed between the rollers to prevent the rollers from rubbing against each other when the rollers are tilted. At the same time, because the inner and outer rings are divided, the clearence can be adjusted, and even if a preload is applied, a high-precision rotary motion can be obtained.
2 、 Simplified operation and installation
The outer or inner ring is divided into two parts, and it is fixed after being installed with rollers and retainers, so the operation during installation is very simple.
3. Withstand large axial and radial loads
Because the rollers are arranged perpendicular to each other through the cage on the rolling surface of the V-shaped groove at 90 °.
4. Significantly save installation space
The size of the inner and outer ring of the cross roller bearing is miniaturized to a small extent, especially the ultra-thin structure is a small size close to the limit, and it has high rigidity, so it is suitable for the joint work or rotation parts of industrial robots, and the rotating work of machining centers Tables, robotic rotating parts, precision rotary tables, medical instruments, measuring instruments, IC manufacturing devices, etc. are widely used.
5.High speed capability
6. Reduce the shaft length and processing cost, the thermal expansion causes limited changes in geometric dimensions
7. Use nylon divider, low moment of inertia, low starting torque, easy to control angular division.
DK Bearing is committed to manufacturing and marketing high precision cross roller bearings. Looking forward to your enquiry.