With the imported SKF bearing and assembly method

Bearing with the matching refers to the inner ring and the shaft and outer ring with a hole, bearing the circumferential fixation is through coordinate to guarantee. Because imported SKF bearing is standard parts, when combined with other parts, bearing inner hole as a benchmark, outer ring is datum axis, its code without annotation. Practically the pore diameter and outer diameter of the bearing have smaller negative deviation tolerance zone, and generally cylinder datum holes and datum axis deviation direction, numerical value is different, so the bearing inner hole and shaft of the cylinder similar with much more important. Bearing the species should be selected according to the high or low speed, load, temperature changes in the size of the factors to decide. Cooperate with too loose, can make the rotation accuracy is reduced, vibration increase; Cooperate with tight, perhaps because the elastic deformation of inner and outer ring is too big and affect the normal work of the bearings, also can make difficult bearing. In general, high speed, large load, temperature changes large bearing some persons to be tight fit, often remove the bearing of persons to be loose, rotate the ring fit should be tight, swimming fulcrum of the outer ring should be loose some. Cooperate with bearing inner ring of the rotating shaft often USES n6, m6, k5, k6, j5, js6; And don't match the rotation of the outer ring of bearing hole J6, J7, H7, such as the G7 is often used to cooperate. As a result of the imported SKF bearing fit tighter, usually for ease of assembly, preventing damage of bearing, reasonable assembly method should be taken to ensure the quality of assembly, combination design should also take corresponding measures. When installing bearings, small bearings available copper hammer light and tap evenly ring loading. Press pressure into the large bearings available. Large in size and fit tight bearing hole can be heating expansion after assembly. Is important to note that the force should be assembled on the ring, otherwise it will damage the bearings. Removing bearings, can use a special tool, to facilitate disassembly, bearing the positioning of the shoulder height should be lower than inner ring height, its value for the bearing samples. Set down when cup inside the bearing axial moving distance is longer, usually using tapered roller bearing, its outer ring assembly respectively, convenient operation, and set inside the cup Kong Fei cooperate with the diameter of the part shall be older is benefit for the load of the bearing outer ring, and reduce the inner hole finishing area. 1) Centripetal type thrust bearing installation type angular contact bearings including tapered roller bearings and angular contact ball bearings, they are usually installed in pairs, most this kind of bearings is separable, so very convenient operating common installation, just want to pay attention to adjust the clearance when installation, and bearing clearance for this type of bearing is crucial to the life and job characteristics, specific adjustment method see the relevant section. Integral type of centripetal thrust bearing internal clearance has preset in general. 2) The installation of the thrust bearing thrust bearing generally take axial ring and shaft for transition fit, take a seat for running fit with the bearing holes, so this kind of imported SKF bearing is easy to install. This type of bearing installation to the control shaft ring raceway ( Or bottom) Perpendicular to the axis of the shaft, such as the vertical degree of out of control, will make the load bearing suffered its side and prone to early failure, operation performance is also affected. This type of bearings, one-way under load, are mostly installed in pairs, but only in one direction under load during operation, so you need to offer certain pre-tightening force, in case of no load that one bearing clearance too loose, roller in the roll on skid and severe wear. For bidirectional thrust bearing is not load bearing of the column in the rolling body, also want to adopt a similar approach to preload, to prevent a similar severe wear phenomenon. 3) The installation of needle bearing with retainer of needle roller bearing installation method similar to the radial bearings, but requires more carefully, because the needle roller bearing ring generally thin, or very fragile and easily damaged, or weak and easy to deformation. Without some easy scattered in the needle roller bearing cage needle, approximately available for installation in this situation: the scattered needle surface coated with grease, then insert the needle against the adhesive one by one in the needle roller ring ( Needle roller set) Don't scratch while, pay attention to the insert needle surface or surface of raceway, and insert the needle number is consistent with the original complete set of the needle roller bearing number. When the actual installation, can also be combined with the specific situation, design a special bearing installation tools, or make use of the installation position on the shaft or the bearing seat of screw, bolt holes, etc. , making imported SKF bearing installation work more convenient and quick.