Today, with the rapid development of social science and technology, not only science and technology are changing with each passing day, but our bearing industry is also undergoing earth-shaking changes. In terms of performance, high-precision crossed roller bearings have replaced the use of traditional bearings in many aspects. High-precision crossed roller bearings outperform traditional bearings in many aspects of use. Now let’s compare the advantages of crossed roller bearings and traditional bearings.
The characteristic of high-precision crossed roller bearings is that the cylindrical rollers move vertically to each other through isolation blocks on the 90° V-shaped groove rolling surface. Therefore, crossed roller bearings can bear multi-directional loads such as radial load, axial load and moment load. Compared with the traditional thrust bearing + radial centering bearing combination, the crossed roller bearing has a compact structure, small size, and simplifies the workbench design, thereby reducing the cost of the turntable.
In addition, due to the use of optimized preload, this type of bearing has high stiffness, so the stiffness and accuracy of the turntable are also guaranteed. Thanks to the design of two rows of crossed rollers, the effective span of the bearing can be significantly increased, so this type of bearing has a high anti-overturning moment. Crossed roller bearings are divided into two types: the first is crossed cylindrical roller bearings, and the second is crossed tapered roller bearings.
Generally, crossed cylindrical roller bearings are cheaper than crossed tapered roller bearings and are suitable for turntable applications with relatively low speeds; while crossed tapered roller bearings adopt a pure rolling design of tapered rollers and have high operating accuracy and high speed capabilities. Strong, reducing shaft length and processing costs. Crossed roller bearings are suitable for various types of vertical or horizontal boring machines, as well as vertical mills, vertical lathes and large gear milling machines.
Although crossed roller bearings have a special structure, the production and processing process is relatively cumbersome, and there are certain requirements for operating employees. Relying on the advantages of new equipment, mass production capabilities can be quickly formed, the production cycle can be quickly improved, and the cost has dropped significantly compared with turntable bearings. For users, the cost performance is much higher than that of conventional bearings. This is why crossed rollers have been used in recent years. The main reason why bearings gradually replace conventional bearings.
