Outer rolling surfaces of the bearing to ensure load capacity

At this time, the journal surface and shell hole surface matching the bearing directly serve as the inner and outer rolling surfaces of the bearing to ensure load capacity and running performance Same as the bearing with ring, the hardness, machining accuracy and surface quality of the raceway surface of the shaft or housing hole should be similar to the raceway of the bearing ring.. The choice of bearing matching type should be determined according to the type and size of the bearing, the magnitude and direction of the load, and the nature of the load. The cause is unknown and improper handling will often get twice the result with half the effort.

Maintain good working conditions, so as to obtain higher processing accuracy and smaller surface roughness, while also improving the service life of the bearing and the noise of the bearing. The correctly selected bearing fit should ensure the normal operation of the bearing and prevent the inner ring and the shaft, the outer ring and the housing hole from rotating relative to each other during operation. It may also be due to the irregularities of the matching shaft and the surface of the seat hole. It is especially suitable for supporting structures with restricted radial installation dimensions.

According to different applications, bearings without inner ring or needle roller and cage components can be selected. At this time, the internal clearance of the bearing may be reduced or even disappeared due to the elastic expansion of the inner and outer rings and the contraction of the outer ring. This kind of bearing can only bear radial load. The plane needle roller bearing is equipped with thin and long rollers (roller diameter D≤5mm, L/D≥2. When the bearing is installed on a thin-walled shell or hollow shaft, a tighter fit should also be used.Planar needle roller bearings are roller bearings with cylindrical rollers. Direct use of needle roller bearings from rolling bearing manufacturers Life, increase maintenance costs, and even cause bearing burnout.

With modern high-precision grinders and high-precision lathes, adaptive control technology is introduced to automatically adjust working parameters according to changes in cutting conditions, so that the bearings can be processed during processing.5, L is the roller length), Therefore, the radial structure is compact, and its inner Clutch Release Bearings diameter and load capacity are the same as other types of bearings, and the outer diameter is small. However, a tight fit is disadvantageous. This kind of roller is called a needle roller. Generally speaking, when the direction of the working load does not change, the rotating ring has a tighter fit than the stationary ring, because the rotating ring bears the rotating load, and the stationary ring bears the local load. When the speed is higher, the load is larger and the vibration is stronger, the tighter fit should be used.

The temperature of the bearings used in mechanical equipment is too high, such as 'fever' abnormal conditions, which are common and harmful to mechanical equipment. Despite having a small cross-section, the bearing still has a high load bearing capacity. Too tight fit will also make assembly and disassembly difficult, especially for heavy machinery. The shape or uneven rigidity causes irregular deformation of the inner and outer rings of the bearing, which will destroy the normal operation of the bearing. The rollers are thin and long relative to its diameter.

Outer rolling surfaces of the bearing to ensure load capacity

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