Focus on the Bearing Industry for 20 Years!
Deep groove ball bearing has the advantages of simple structure and convenient use. It is a kind of bearing with large production batch and wide application range. It is mainly used to bear radial load and certain axial load. When the radial clearance of the bearing increases, it has the function of angular contact bearing and can bear large axial load.
The self-aligning ball bearing has two rows of rigid requirements, the inner ring has two raceways, and the outer ring raceway is of inner spherical shape, which has the performance of automatic self-aligning. It can automatically compensate the coaxiality error caused by the bending of the shaft and the deformation of the shell. It is suitable for components whose strict coaxiality cannot be guaranteed in the support seat hole. The bearing mainly bears radial load. While bearing radial load, it can also bear a small amount of axial load. It is usually not used to bear pure axial load. If bearing pure axial load, only a row of rigid balls are stressed.
The ultimate speed of angular contact ball bearing is high. It can bear both meridional load and axial load, and can also bear pure axial load. Its axial load capacity is determined by the contact angle and increases with the increase of contact angle.
The roller of cylindrical roller bearing is usually composed of two retaining edges of one bearing ring, cage, roller and ring, which can be separated from another bearing ring, belonging to separable bearing. This kind of bearing is easy to install and disassemble, especially when it is required that the inner and outer rings are interference fit with the shaft and shell. Such bearings are generally only used to bear radial load, and only single row bearings with retaining edges on the inner and outer rings can bear small steady axial load or large intermittent axial load.
Self aligning roller bearing has two rows of rollers, which are mainly used to bear radial load and axial load in either direction. The bearing has high radial load capacity and is especially suitable for working under heavy load or vibration load, but it can not bear pure axial load; It has good centering performance and can compensate the error of the same bearing.
Tapered roller bearings are mainly used to bear the combined radial and axial load dominated by radial load, while large cone angle tapered roller bearings can be used to bear the combined radial and axial load dominated by axial load. This kind of bearing is a release bearing, and its inner ring (including tapered roller and cage) and outer ring can be installed respectively. In the process of installation and use, the meridional clearance and axial clearance of the bearing can be adjusted, and the pre interference installation can also be carried out.
The thrust ball bearing is a separate bearing. The shaft ring and seat ring can be separated from the rigid ball assembly of the cage. The shaft ring is a ferrule matched with the shaft, the sitting ring is a ferrule matched with the bearing seat hole, and there is a gap with the shaft. The thrust ball bearing can only pull out the axial load, the one-way thrust ball bearing can only bear the axial load of one room, and the two-way thrust ball bearing can bear the axial load in two directions. The thrust ball can not limit the meridional movement of the shaft, and the limit speed is very low. One way thrust ball bearing can limit the axial displacement in one direction of shaft and shell, and two-way bearing can limit the axial displacement in two directions.
The thrust self-aligning roller bearing is used for bearing the combined axial load and meridional load, but the meridional load shall not exceed 55% of the axial load. Compared with other thrust roller bearings, this kind of bearing has lower friction coefficient, higher speed and self-aligning ability. The roller of 29000 bearing is an asymmetric spherical roller, which can reduce the relative sliding between the rod and the raceway in work, and the roller is long, large in diameter, large in number and large in load capacity. It is usually lubricated with oil, and grease can be used for individual low-speed situations. In the design and selection, it shall be preferred.
Needle roller bearings are equipped with thin and long rollers (the roller length is 3 ~ 10 times the diameter, and the diameter is generally no more than 5mm). Therefore, the radial structure is compact. Its inner diameter size and load capacity are the same as other types of bearings, and its outer diameter is small. It is especially suitable for the support structure with limited radial installation size. According to different application occasions, the bearing without inner ring or needle roller and cage assembly can be selected. At this time, the journal surface and shell hole surface matched with the bearing are directly used as the inner and outer rolling surfaces of the bearing. In order to maintain the same load capacity and operation performance as the bearing with ferrule, The hardness, machining accuracy and surface quality of the raceway surface of the shaft or housing hole shall be similar to that of the raceway of the bearing ring. This kind of bearing can only bear radial load.
The outer spherical ball bearing with seat is composed of an outer spherical ball bearing with seals on both sides and a cast (or steel plate stamped) bearing seat. The internal structure of the outer spherical ball bearing is the same as that of the deep groove ball bearing, but the inner ring of the bearing is wider than the outer ring. The outer ring has a truncated spherical outer surface, which can be self-aligning when matched with the concave spherical surface of the bearing seat. Usually, there is a gap between the inner hole of the bearing and the shaft. The inner ring of the bearing is fixed on the shaft with jacking screw, eccentric sleeve or tightening sleeve and rotates with the shaft. The bearing with seat has compact structure, convenient loading and unloading and perfect sealing. It is suitable for simple support. It is commonly used in mining, metallurgy, agriculture, chemical industry, textile, printing and dyeing, transportation machinery, etc.