The type of bearing load and to choose to cooperate with the size of the effect

Machine, according to the load acting on the bearing relative to the rotation of the ring, ring of load can be divided into the following three types: 1, 2, 3 cycle load, the local load swing is shown in figure 1 load bearing ring under local load load type: the synthesis of the radial load acting on the bearing and the relative static ring, namely the load direction is always the same in the ring groove on the local area of the ring of the load character. ( Car driven wheel outer ring) 。 Cyclic load, the synthesis of the radial load acting on the bearing and the relative rotating ring, namely load sequentially role on the ring groove of the circumference of a circle, the ring of the load character. ( Car driven wheel inner ring) 。 Oscillating load: the synthesis of the radial load acting on the bearing and on the ring relative oscillation in some area, namely the role of the load vector change often on local circular ring raceway, the ring of the load character. For example: oscillating load bearing Rg a radial direction load, and the rotation of the a smaller radial load Rx, synthesis of the two radial load R, are changing the size and direction. But synthetic radial load R only within a race in a rotating ring AB oscillation, the ring on the nature of the load, is the oscillating load. Selection of force and cooperation principle 1, (usually ring by cyclic load on the shaft Or shell hole) Suitable persons to interference fit, transition fit or tighter, the amount of interference, the size of the hole with ring and the shaft or shell with surface crawling phenomenon for the principle. 2, under partial load hole or shaft ring and shell, the transition of persons to be a loose fit, or smaller clearance fit, so that the ring raceway friction torque between the drive the transposition, prolong the service life of bearing. 3, bear the ferrule of oscillating load, its tightness between cyclic load and partial load. The influence of load to choose cooperate with size? Rolling bearing ring and shaft hole with minimum interference or shell, take off the load size. Under heavy load or shocks, will cause the deformation of the bearing is bigger, the combined with the actual interference between surface is reduced and the actual bearing internal clearance increases, at this time in order to make the bearing working properly, choose the larger interference fit. Similarly, bear the load of a lighter, optional smaller interference fit. For low load is bigger, have high rotation precision bearing, in order to eliminate the influence of elastic deformation and vibration, should avoid to use clearance fit. 's high rotation accuracy requirement for light load bearing, often using smaller clearance fit. The size of the rolling bearing is larger, with the selection should be tight. Hollow shaft neck than solid shaft neck, thin-walled shell than thick wall, light alloy shell than steel or cast iron shell adopts the cooperation matters. Low split shell a little looser than the monolithic shell adopts cooperation, in order to avoid interference to the bearing outer ring clip flat, even the axis to get stuck in. For ease of installation and removal, especially for heavy machinery, appropriate USES loose fit. If require disassembly, and want to use a tight fit, this type of bearings can be used to separate or ring cone hole and set or set back sleeve bearing. Low when the requirements of bearing inner ring or outer ring can swim along the axial direction, the inner ring and the shaft or hole with the outer ring and shell, should choose a loose fit. Low due to the interference fit reduce bearing radial clearance, such as one of the two ring bearing with the interference of the super-large, should choose to have greater than the basic set of radial clearance of the bearing. Low rolling bearing working temperature below 100 ℃, work in high temperature bearing, should be selected to cooperate.