When assembling special bearings for main shafts, the most basic requirement is to make the added axial force immediately act on the end of the throwing ring of the installed bearing (when installed on the shaft, the added axial force should immediately act on the inner ring, When it is installed in the hole, the added force should act directly on the bezel). The rolling elements are not affected as much as possible. The assembly methods include hammering method, punching machine assembly method, hot-loading method, refrigerated assembly method, etc. 1. Hammering method Use the hammer head to pad the copper rod and some soft raw materials before hammering. It is necessary to pay attention not to let the copper powder and other dirty things fall into the bearing dovetail guide rail, and it is not necessary to use the hammer head or punching cylinder immediately Knock the inner and outer rings of the bearing so as not to affect the matching precision of the bearing or cause the bearing to be damaged. 2. Assembling method of screw press or four-column hydraulic press For bearings with relatively large clearance fit and dimensional tolerance, screw press or four-column hydraulic press can be used for assembly. Before pressing, the shaft and bearing should be laid flat, and a small amount of grease should be applied. The pressing speed should not be too fast, and the pressure should be removed quickly after the bearing is in place, so as not to damage the bearing or shaft. 3. Hot loading method The hot loading method is to put the special bearing of the main shaft into the oil and heat it to 80-100, so that the inner hole of the bearing is expanded and then installed on the shaft, which can prevent the shaft and bearing from being damaged. For bearings with sealing cover and sealing ring, the internal structure has been filled with grease, which is not suitable for shrink fitting. With 37 years of research and development, production and sales history of special bearings for spindles, we can customize solutions for you! (http://)
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