The outer raceway of a self-aligning roller bearing is a spherical surface with the center point of the bearing as the center of the ball. The inner raceway has two inclined raceways with respect to the bearing line, providing excellent automatic self-aligning performance. Mainly used to withstand radial loads, it can also withstand axial loads in any direction. Suitable for large mechanical equipment such as mining, metallurgy, papermaking, and construction.

Cylindrical roller bearings belong to separable bearings, with linear contact between the inner and outer rings and the rollers, low friction coefficient, and high ultimate speed. Double row cylindrical roller bearings have the advantages of compact structure, strong rigidity, high load-bearing capacity, and small deformation under load, and are used for machine tool spindle support. Cylindrical roller bearings are commonly used in heavy machinery such as cold and hot rolling mills. The basic type of radial clearance for single row cylindrical roller bearings is ordinary grade. Bearings with suffix C3, C4 or other clearance grades can be selected according to the actual situation.

The thrust self-aligning roller bearing system is a separated type bearing, with spherical rollers and spherical race raceways, providing self-aligning performance. Due to its load line forming a certain angle with the bearing axis, this type of bearing can withstand both axial and radial loads simultaneously, and can be used in extremely heavy load situations with a relatively high allowable speed. Lubricating oil is generally used during use. Thrust self-aligning roller bearings are roughly the same as self-aligning roller bearings. The raceway surface of the seat ring is a spherical surface centered on a point consistent with the central axis of the bearing. The rollers of this type of bearing are spherical, therefore, they have automatic self-aligning function and are not very sensitive to coaxiality and shaft deflection.

Conical roller bearings mainly bear combined radial and axial loads, and the axial bearing capacity depends on the angle of the outer race raceway. The larger the angle, the greater the bearing capacity. Double row and four row tapered roller bearings can withstand radial and axial combined loads mainly in the radial direction, and can withstand axial loads in both directions. They are generally suitable for medium and low-speed applications.

A backing bearing is a rolling bearing with a particularly thick outer ring, which is installed in groups on a stationary shaft as a support roller during use. The pressure on the work roll is transmitted to the support roll through the intermediate roll and to the frame through the saddle system. It is generally used on multi roll cold rolling mill equipment and can also be used in other occasions, such as straightening machines.

The backing bearing is a multi column cylindrical roller bearing, which requires very high precision, especially the cross-sectional height (T value) from the inner diameter to the outer diameter after eliminating radial clearance. On each shaft, the T value is controlled within 0.005mm, which requires high precision of the bearing parts.

Backed bearings are specifically designed for multi roll thin plate rolling mills, used for rolling cold-rolled silicon steel sheets for the power industry, high-quality thin plates for the automotive industry, coated plates, and stainless steel plates with high technical added value. This type of bearing is directly used as a support rod, and its outer diameter thickness is much larger than that of ordinary bearings in terms of structure. The radial runout of the outer diameter and the difference in wall thickness size after assembly are extremely small. The rated dynamic load of bearings is relatively high, and they can rotate with high precision under heavy loads.

Deep groove ball bearings consist of four basic components: inner ring, steel ball, and cage. Under normal operating conditions, the inner raceway, outer raceway, and steel ball bear the load, while the cage serves to separate and maintain stability for the steel ball. Single row radial deep groove ball bearings have a simple structure, no separation of inner and outer rings, and are easy to use. They are widely used in the mechanical industry, such as precision instruments, low-noise motors, transmission shafts for automobiles, motorcycles, woodworking machinery, textile machinery, mining machinery, electromechanical equipment, plastic machinery, office equipment, medical equipment, fitness, national defense, aviation, aerospace and sports equipment, and general machinery. Mainly used to withstand radial loads, but can also withstand a certain amount of axial loads. When increasing the radial clearance of the bearing, it has the properties of a radial thrust bearing and can withstand larger axial loads. This type of bearing can limit axial movement in two directions. According to the size of the clearance, it is allowed for the inner and outer rings to tilt relative to each other by 8-16 '.

The inner ring, ball, and cage of the self-aligning ball bearing can rotate freely around the center of the bearing, and have self-aligning properties. Its centering ability can compensate for centering error, shaft deformation, and bearing seat deformation. Self aligning ball bearings are suitable for use in transmission bearings where it is difficult to center the shaft and upper shell, and the shaft is prone to deflection.

A self-aligning ball bearing is a double row ball bearing with a spherical outer raceway and two deep groove inner raceways, which has self-aligning performance. It is mainly used to withstand radial loads, and can also withstand a small amount of axial loads while bearing radial loads, but generally cannot withstand pure axial loads. Its ultimate speed is lower than that of deep groove ball bearings. This type of bearing is commonly used on double support shafts that are prone to bending under load, as well as in components where the double bearing holes cannot guarantee strict coaxiality, but the relative inclination between the inner ring centerline and the outer ring centerline must not exceed 3 degrees.

Suitable for industries such as heavy and impact loads, precision instruments, low-noise motors, automobiles, motorcycles, metallurgy, rolling mills, mining, petroleum, papermaking, cement, sugar extraction, and general machinery.

Angular contact ball bearings can withstand both radial and axial loads, as well as pure axial loads. Their axial load capacity is determined by the contact angle and increases with the increase of the contact angle. They have a high limit speed, high rigidity, and can be pre adjusted, making them suitable for high-speed and high-precision applications. Single row angular contact ball bearings can only withstand unidirectional loads, so they are usually installed in pairs. Double row angular contact ball bearings bear large radial and axial combined loads and torque loads, mainly used in components that limit the bi-directional axial displacement of the shaft or housing. The four point contact ball bearing is a separable bearing that can withstand bidirectional axial loads and has the function of single row and double row angular contact ball bearings.

The design of double row angular contact ball bearings is basically the same as that of single row angular contact ball bearings, but it only occupies a smaller axial space. Double row angular contact ball bearings can withstand radial loads and axial loads acting in two directions. They can limit the bi-directional axial displacement of the shaft or housing, with a contact angle of 30 degrees. Can provide high rigidity bearing configurations and withstand overturning moments.

Outer spherical ball bearings are actually a variant of deep groove ball bearings, characterized by a spherical outer diameter surface on its outer ring, which can be fitted into the corresponding concave spherical surface of the bearing seat for centering.

It is mainly used to bear radial and axial combined loads, mainly radial loads. Generally, it is not suitable to bear axial loads alone. This type of bearing can be separately installed with an inner ring (with a full set of rollers and retainers) and an outer ring. This type of bearing does not allow the shaft to tilt relative to the housing, as it will generate additional axial force under radial load. The size of the axial clearance of this type of bearing is closely related to its normal operation. When the axial clearance is too small, the temperature rise is relatively high; When the axial clearance is large, the bearing is prone to damage. Therefore, special attention should be paid to adjusting the axial clearance of the bearing during installation and operation. If necessary, pre interference installation can be used to increase the rigidity of the bearing.

Composed of a washer with a raceway, a ball, and a retainer assembly. The raceway washer that matches with the shaft is called the shaft ring, and the raceway washer that matches with the housing is called the seat ring. This type of bearing includes unidirectional thrust ball bearings and bidirectional thrust ball bearings. Unidirectional thrust ball bearings can only withstand axial force in one direction and can limit axial displacement in one direction, while bidirectional thrust ball bearings can withstand axial force in two directions and can limit axial displacement in both directions. Neither can withstand radial loads. In addition to the structure with flat seat rings, there are also structures with spherical seat rings and seat cushions. The bearing has a high load capacity and a low limit speed.