Full complement cylindrical roller bearings are designed to withstand heavy loads. Under the same width, this kind of bearing has extremely high bearing capacity compared with the traditional bearing with cage, and the radial section is small, which can save space, but the speed is relatively low. Because full complement cylindrical roller bearings have no cage, they can accommodate more rollers, so they are suitable for bearing extremely heavy radial loads, but their allowable operating speeds are much lower than those of cylindrical roller bearings with cages. The dimensional tolerances and geometrical deviations of full complement cylindrical roller bearings should comply with GB/T307.1-94 (ISO492-1994) P0 tolerance level, and the normal original radial clearance CO, can also be required to have C2 to C4 original radial clearance Clearance bearings. However, the corresponding suffix should be added after the bearing code when ordering. Rubber and plastic screw extruders generally use C3 group clearance. For the fit tolerance, please refer to the selection principle of bearing housing tolerance and the selection principle of shaft tolerance limit. Bearings are allowed to bear a certain axial load. Adequate lubrication is a prerequisite for bearing axial loads. The rib of one-way locating bearings and locating bearings that bear the axial load must be fully supported. Installation and disassembly, when installing or disassembling cylindrical roller bearings, special attention must be paid to the fact that the installation or disassembly force cannot be directly transmitted through the cylindrical roller and the rib of the ring. In general, with the correct use of full complement cylindrical roller bearings, fatigue life can be achieved. But in the event of accidental early damage, it can no longer be used. Unlike fatigue life, this early damage is called a failure or accident. Most of them are caused by poor consideration of installation, use, and lubrication, foreign matter intruding from the outside, or insufficient research on shafts and bearing housings. The damage state of the full complement cylindrical roller bearing, such as the abrasion of the ring rib of the roller bearing, may be caused by insufficient lubricant, inappropriate grade, defective oil supply and discharge structure, foreign matter intrusion, SKF bearing installation error or shaft The deflection is too large, which may also be caused by a combination of the above reasons. Therefore, it is difficult to know the real cause of the damage only by investigating the bearing damage. However, on the basis of fully understanding the machine, working conditions and peripheral structure of the bearing, clarifying the situation before and after the failure, and then analyzing the damage of the bearing and various related reasons, similar failures can be prevented from happening again. Representative bearing damage causes and countermeasures. Even full complement cylindrical roller bearing parts are machined using the most modern manufacturing techniques. See how its readings change with preload. The preload method has its disadvantages, which are well known. Its working surface will always have the dial indicator against the appropriate part of the bearing end face or shaft.
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