Bearing disassembly is regular maintenance performed bearing replacement. After the demolition, if continued use, or still need to check the status of the bearings of its demolition should be careful when installing the same. Careful not to damage the excavator bearing of the parts, especially the interference fit bearing disassembly, operation difficult.
Designed according to need removal tool is also very important. When removing, according to the drawings research demolition methods, with the condition the order to investigate the bearing, in order to achieve foolproof demolition job.
Removing the outer ring of the outer ring of the interference fit, prior to the housing of the outer circumference of the extrusion screw with a few screws, tighten the screws evenly on one side, while the demolition. These usually cover screw holes blind plugs, tapered roller bearings and other separation-type bearings in a housing block on the shoulders set out several incisions, using pads, with press demolition, or tapping the demolition.
Removal of the inner ring, you can use the press pull easiest. At this point, we should pay attention to your inner bear its pullout. Furthermore, as shown in the drawing tools are mostly La use, regardless of the kind of fixtures, it must be firmly stuck in the inner sides. To do this, you need to consider the size of the shaft shoulder block, or research on machining grooves in the shoulder block to use drawing fixtures.
Large cross roller bearings inner ring disassembly by hydraulic method. The hydraulic pressure to be set through the bearing hole, so that the drawing is easy. Width of bearing the hydraulic method and drawing fixtures and use, disassembly operations.
Cylindrical roller bearing inner ring disassembly can take advantage of induction heating. Local heating in a short time, so that the inner expansion after drawing methods. You need to install a large number of this type of bearing inner ring of the occasion, also uses induction heating method.
I hope shortly before installation, just open the bearing package. General grease lubrication, not clean, direct filling grease. Lubricating oil, general do not wash, however, the instrument used or high-speed bearings, etc., use oil washed clean, removing the coating on the thrust roller bearing
of the rust inhibitor. Remove the bearing rust inhibitor, rust, it can not be placed aside. Furthermore, a grease-enclosed bearing has not cleaned directly.
Bearing installation method, because the bearing structure, with the condition varies, generally, due to multi-axis rotation, so the inner need interference fit. Cylindrical bore bearings pressed into the multi-purpose presses, or by hot charging methods. Cone of the occasion, mounted directly on the tapered shaft or sleeve installation.
When mounted to the housing, and more generally with the clearance, the outer ring had a surplus quantity, usually pressed into the press or shrink fit method also has cooling installation. With dry ice as the coolant, shrink fit installation of the occasion, moisture in the air will condense on the surface of the bearing. Therefore, the need for appropriate corrosion protection.
Bearing is the other parts on the shaft will produce relative motion, used to reduce friction coefficient during power transmission and keep the machine shaft center fixed position, its main function is to support the rotary body, in order to reduce the equipment in the transmission process of mechanical load friction coefficient. According to the motion of the frictional properties of different components, bearings can be divided into two types of rolling bearings and sliding bearings.
没有评论:
发表评论