Jiaxing bearing | study together with the choice of rolling bearings

There is rotational, have HRB bearing ( ) Jiaxing bearing group sales co. , LTD. ( The company) Is bearing group co. , LTD. Established in jiaxing spot sales window, specializing in HRB brand bearings, facing the whole country, the existing stock 50 million yuan, covers the whole bearing, have very strong spot supply, is the group's retail sales center. Main shaft rotation precision and positioning accuracy of the operation precision of bearing and the bearing, the centripetal bearing or angular contact bearings bearing ( Except for the radial location) , the bearing inner ring and shaft, the outer ring and shell should be interference between holes. Which can guarantee the radial position precision of bearing, and can prevent the bearing inner ring with the shaft, the outer ring and shell holes between slide and wear, and can also ensure uniform on the surface of the inner and outer ring and bearing comprehensive post. The magnitude of the interference between mating surface after assembly is change, and work stress deformation and deformation caused by temperature difference, the greater the the quantity of interference. Under the condition of work, because the inner ring raceway loading surface, the tangential deformation and thermal deformation of the inner ring, and thus lead to the magnitude of the interference between inner ring and the shaft is reduced, inner ring and the shaft become loose fit; And outer swell is made between outer ring and shell hole interference quantity increase, so tight. Therefore, when choosing to cooperate with the inner ring and shaft are cooperate to choose some relatively tight, outer ring and shell holes with the selected it loose. As long as you keep the effective interference is less than zero, can meet the requirements of the positioning precision of bearing, and to ensure that the bearing capacity into full play. However, the effective interference quantity also shoulds not be too big. Because of bearing internal and external ring thin-wall precision parts, prone to elastic deformation, under more than full and force, inner and outer ring raceway surface shape, tend to support the running accuracy affect the bearing, and generate vibration and noise. Large amount of interference will cause bearing clearance reduction, and inconvenient to bearing. In the inner and outer inseparable centripetal bearing do travelling support, need swimming bearing ring part clearance fit. In the heavy machinery bearings, unfavorable use interference fit. Rolling bearing with the prescribed standards and shaft, bearing and the bearing shell holes match fit, shaft and the shell hole location and scope of tolerance zone. Cooperate with symbols consists of letters and Numbers, respectively with nature and tolerance grade of matching parts. In order to meet the requirements of precision bearing, bearing performance and life, the standard also specifies the matching parts of matching parts of the form tolerance and surface roughness. Choose to cooperate, can according to the standard selection of recommended, can also be calculated using the method of estimating the required minimum amount of interference, according to the minimum interference quantity to select again to cooperate. When the interference fit more influence on clearance, should estimate the impact on the clearance of the range. If you are looking for the above jiaxing bearing group co. , LTD. The author introduces the bearing inspection and replacement of interest or have any questions, please click on the website on the right side of the online customer service or call:, you close the way of jiaxing bearing purchasing advisors. - - - - - - Editor: jiaxing bearing sourcing consultant LTD. All rights reserved, The company) Reprint please indicate the source