When assembling the special bearing for the main shaft, 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 it is installed on the shaft, the added axial force should immediately act on the inner ring, When installed in the hole, the added interaction force should be applied to the bezel immediately). Do not affect the rolling elements as much as possible. Assembly methods include hammering method, punching machine assembly method, hot charging method, refrigeration assembly method, etc. 1. Hammering method A method of hammering a copper rod and some softer raw materials with a hammer head. It is necessary to pay attention not to let the copper dust and other dirty things fall into the bearing dovetail guide rail, and it is not necessary to directly use the hammer head or punch immediately. Knock the inner and outer rings of the bearing to prevent damage to the mutual matching precision of the bearing or damage to the bearing. Second, screw press or four-column hydraulic press assembly method For bearings with large clearance fit dimensional tolerances, screw press or four-column hydraulic press can be used to assemble. Before pressing, the shaft and bearing should be leveled, and a small amount of grease should be applied. The pressing rate should not be too fast. After the bearing is in time, the working pressure should be quickly removed to avoid damage to 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 fitted to the shaft, which can prevent the shaft and the bearing from being damaged. Bearings with sealing caps and sealing rings whose internal structure has been flooded with grease are not suitable for shrink-fit. With 37 years of research and development, production and sales history of special bearings for spindles, we can customize solutions for you!