Today, with the rapid development of social science and technology, not only technology is 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 ways. The performance of high-precision crossed roller bearings in many aspects is better than that of traditional bearings. 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 are vertically arranged and moved on the 90° V-groove rolling surface through spacers. Therefore, crossed roller bearings can withstand multi-directional loads such as radial loads, axial loads, and moment loads. Compared with the traditional thrust bearing + radial centering bearing combination, the crossed roller bearing has a compact structure and a small size, and simplifies the table design, thereby reducing the cost of the turntable.
In addition, due to the use of optimized preload, this type of bearing has high rigidity, so the rigidity 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. In crossed roller bearings, it is 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 speed; while crossed tapered roller bearings use a pure rolling design of tapered rollers, which have high running accuracy and high speed capacity Strong, reduced shaft length and processing costs and other advantages. 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, etc.
Although the structure of the crossed roller bearing is special, the production and processing process is relatively cumbersome, and there are certain pursuits for the operators. Relying on the advantages of new equipment, it can quickly form the ability of mass production, quickly increase the production cycle, and the cost is greatly reduced compared with the turntable bearing. For the user, the cost performance is much higher than that of the conventional bearing. This is why the cross roller The main reason why bearings are gradually replacing conventional bearings.
