SKF cylindrical roller bearings, roller bearings, full complement cylindrical roller bearings, cylindrical roller bearings, NSK fag cylindrical roller bearings, cylindrical roller bearings, Timken type cylindrical roller bearings, spherical roller bearings, full roller bearing, cylindrical roller bearing, cylindrical roller bearings, imported large cylindrical roller bearings, cylindrical roller bearings, cylindrical roller ina split bearing, cylindrical roller thrust bearings, cylindrical and so on, their use and installation should pay attention to what the problem?
1. installation type 2000 bearing outer ring without edge as a floating support, the amount of ring rolling movement of body, not more than 0.5~1.5 mm, with long axis in the rigid bearing parts for floating support, should be installed (upper). Make the inner ring and the roller close to the journal, slightly inclined to the right. When working, because of fever, the axial thermal expansion elongation, bearing inner ring and rolling moves to the left. At this time, the inner ring and the roller are in the normal position of the outer ring, or close to the normal position, as follows.2 installing the inner ring or outer ring without bearings, first check whether the inner ring or outer ring is axially shifted, whether or not it has been limited. The overall installation is C620 - 1 bearings on the lathe shaft (outside the ring without edge). In the installation of such bearings, be sure not to forget the assembly shaft or box of the ring, gland, circlip, etc., used to limit the bearings of the inner ring, outer ring or rolling shaft in the direction of moving attachments. When the installation is not at the time, the inner or outer ring of the bearing will be moved axially, leaving mechanical accidents.3, the installation of radial short cylindrical roller, needle roller, spiral roller and other types of bearings, inner ring or outer ring are no edge, be sure to check the bearings of the inner ring and outer ring installation relative position. Because of the size of the shaft neck or the hole of the box, the bearing is not in place, or when the position is not installed, the bearing inner ring often produces a larger displacement to the rolling body. This will prevent the bearings from working properly and wear quickly.
3, bearing installation, must be applied equally in the circumference of ferrule end face pressure to press into the ring, and may not directly tap bearing end face to the top tool, so as not to damage the bearing. Small amount of interference in the case, at room temperature can be used to suppress sleeve bearing ring face, beating with a hammer sleeve, the sleeve will be pressed into the ring balance. If installed in large quantities, use hydraulic press. When pressing, the outer end surface of the outer ring and the outer shoulder of the shell face shall be ensured, and the inner ring end face is tightly pressed with the shoulder end of the shaft platform, and no gap is allowed.4, when the interference is large, the oil bath heating or inductor heating bearings can be used to install the heating temperature range of 80 degrees -100 DEG C, the maximum can not exceed 120 degrees centigrade. At the same time, the nut or other appropriate method is used to fasten the bearing so as to prevent the contraction of the bearing in the direction of width and to create a gap between the collar and the shaft shoulder.5, single row tapered roller bearings installed, the final adjustment should be clearance. The clearance value shall be determined according to the working conditions and the magnitude of the interference fit. Test shall be carried out when necessary. Double row tapered roller bearings and pump shaft bearings have been adjusted for clearance at the factory, and no adjustment is necessary during installation.6, the bearing should be installed after the rotation test, the first for the rotary shaft or bearing box, without exception, then the power for no load, low speed operation, and then gradually increase as the functioning of the rotation speed and load, and to detect noise, vibration and temperature, abnormal, should stop running and check. The running test is normal and can be used before delivery.
1. The installation of bearings must be carried out in a dry, clean environment. Before installation, the machined surface of the shaft and shell, the shoulder end, the groove and the joint surface shall be carefully inspected. All mating surfaces must be carefully cleaned and removed, and the cast surface must be clean.2, before the installation of bearings, should be cleaned with gasoline or kerosene, dry after use, and ensure good lubrication, bearings generally grease lubrication, oil lubrication can also be used. Grease lubrication, grease, anti rust, extreme pressure and other excellent greases should be used. Grease filling capacity for bearings and bearing box volume of 30%-60%, should not be too much. Double row tapered roller bearing and water pump shaft bearing with sealing structure have been filled with grease, which can be used directly by users and can not be cleaned again.
