In modern manufacturing technology, high-speed machine tools have become an unstoppable development trend. With the development of bearing technology and lubrication technology, the speed of the spindle motor is gradually increasing, and the requirements for lubrication are also increasing. To maintain the rotational accuracy of a Square Spindle Motor with high-speed rotation, controlling the temperature rise of the spindle is an important indicator. The temperature rise of a Square Spindle Motor comes from the bearing, which is the result of the conversion of dynamic friction losses into heat transfer to the bearing system. The way to reduce the temperature rise of the bearing is to reduce the dynamic friction loss of the bearing and improve the heat dissipation condition of the bearing. Currently available in the Square Spindle Motor bearings using lubrication methods such as grease, oil mist lubrication, and oil and gas lubrication. 1. When using grease lubrication, bearing unit time heat generation, the lubricant’s viscosity will drop as the temperature rises. In order to avoid bearing burns, it must be fully added to the lubricant. Still, the increase in the amount of oil at the same time also increases the resistance to stirring, increasing the friction loss and reducing the service life of the […] read more