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SKF Bearings: Associated Elements of Interference Cooperation

Source: China Bearing Network Time: 2013-05-12

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SKF bearings use interference cooperation; the useful interference of the cooperation surface and the machining accuracy of the shaft surface; the working temperature and load and other factors. The appearance of the cooperation with the necessary interference; the external appearance will be flattened when cooperating; The flat quantity is about 60% of the roughness of the two cooperation outer surfaces. The rougher the appearance, the larger the cooperative flattening amount; the more the cooperation interference is reduced; therefore, the minimum interference of the cooperation and the bearing processing technology of the cooperative appearance related.
Because the tapered bushing is the most commonly used accessory for mounting and disassembling the tapered bore SKF bearing; it is very convenient to use and operate; therefore it is used in the SKF bearing device of the mechanical equipment such as exercise, mine, traffic, etc. The quality will directly affect the service life of the bearing; for this reason, the flange bearing bushing, lock nut and lock washer of the rolling bearing accessories have been announced in China; and the rules are clear; the diameter of the tapered end of the tapered bushing is large. The tapered flat bushing has no internal diameter error.
SKF bearing oil heating method is one of the most commonly used temperature difference method; heating oil should be non-corrosive mineral oil; the best flash point is more than 250 degrees of transformer oil; when installing the bearing; oil bath heating method can be used; When disassembling the bearing, it can be heated by hot oil. When heating the SKF bearing with oil bath; use the thermometer to control the oil temperature; prevent overheating; together, place the SKF bearing at 50-70 mm from the bottom of the tank. On the net or bracket; do not touch directly with the bottom of the box; to prevent the temperature rise of the SKF bearing part is too high and affected by dirt in the oil.
SKF bearing pressure assembly and disassembly method means that the inner diameter of the bearing is not changed at normal temperature; the outer diameter and its corresponding shaft neck or bearing seat hole are several large scales. The benzene maid SKF bearing applies external force for loading and unloading method; .
Because the pressure assembly and disassembly method is convenient to use; there is no need to add too much messy attachment and disassembly aids; therefore, the pressure assembly and disassembly method is concerned about the small amount of cooperative interference; the small SKF bearing device is still widely used; Cooperate with medium and large bearings and extra large bearings with large interference and large hollow bearings; when installing bearings in soft metal bearing housings; try to prevent pressure installation and disassembly; avoid excessive deformation and influence of device parts. The performance of the bearing or the main engine. When some mechanical support parts need to be assembled and disassembled to replace the bearing repeatedly; more attention should be paid to the damage of the bearing cooperation due to the pressure assembly and disassembly.

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