Precision crossed roller bearings are commonly used in transmission systems of heavy-duty mechanical equipment. According to the different structures of the inner and outer rings and the different arrangements of the rollers, the classification of crossed roller bearings includes the following types:
Convex and concave type crossed roller bearings
The convex and concave crossed roller bearing is one of the earliest developed crossed roller bearings. The inner and outer rings are convex, and the rollers are arranged crosswise. The bearing capacity of this structure is strong, and it is suitable for heavy-duty working conditions and high-speed mechanical equipment, such as construction machinery, metallurgical equipment, and hoisting machinery.
Convex and concave crossed roller bearings
The inner convex and outer concave cross roller bearing is similar to the outer convex and inner concave cross roller bearing, but the structure of the inner and outer rings is opposite, with inner convex and outer concave. The bearing capacity of this structure is equivalent to that of the convex and concave crossed roller bearing, but due to the convex design of the inner ring, the rigidity of the convex and concave crossed roller bearing is higher, which is suitable for precision machinery and high-speed operation.
Cross arrangement type cross roller bearing
Cross-arranged crossed roller bearings are the most common type of crossed roller bearings. The inner and outer rings are cylindrical, and the rollers are arranged in a crossed manner. Bearings of this structure can bear radial load, axial load and inclination load at the same time, and are suitable for various working conditions and mechanical equipment, such as machine tools, metallurgical equipment, hoisting machinery, etc.
Eccentric type crossed roller bearings
The eccentric crossed roller bearing is a crossed roller bearing with a special structure. The inner and outer rings are cylindrical, and the rollers are arranged eccentrically. The central axes of the inner and outer rings do not coincide. Bearings of this structure can withstand large radial loads and small axial loads, and are suitable for mechanical equipment with unstable working conditions and frequent load changes, such as metallurgical equipment, construction machinery, and hoisting machinery.
Double row crossed roller bearings
Double-row crossed roller bearing is a kind of bearing in which the inner and outer rings are arranged with two rows of rollers crossed. It is divided into two types: internal gear type and external gear type. Bearings of this structure can bear large radial loads and axial loads at the same time, and are suitable for transmission systems of heavy-duty mechanical equipment, such as metallurgical equipment, hoisting machinery, excavators, etc.
In short, the classification of precision crossed roller bearings is mainly divided according to the structure of the inner and outer rings and the arrangement of the rollers. Different crossed roller bearings have different scopes of application and carrying capacity, and choosing a suitable crossed roller bearing has an important impact on the operation stability and life of mechanical equipment.
