The diameter of the part where the rolling bearing is installed on the hollow shaft of the bearing tube mill is increased. The dilute oil cooled by the hollow shaft reduces the temperature of the hollow shaft to the bearing to the normal range below 60°. The advantages of this type of bearing seat are as follows:
1. Thin oil lubrication is superior to grease lubrication, which minimizes the friction coefficient of the bearing and saves electricity better.
2. The temperature of the bearing in normal operation is much lower than that of the bearing with dry oil lubrication, which prolongs the service life of the bearing.
3. The lower seat of the bearing is equipped with an oil level to observe the oil level. The operator can see the oil level at any time, and can replenish the oil in time to prevent poor lubrication due to lack of oil and avoid bearing damage accidents.
4. The oil content of the oil chamber of the bearing seat reduces the outer diameter of the rolling bearing that can be installed (provided that the installation of the feeding and discharging device has sufficient strength and torque), the hollow shaft and the feeding and discharging screw cylinder are connected with a flange on the connecting end surface, and The flanges of the inlet and outlet spiral cylinders are connected. On the end face of the hollow shaft from thick to thin, a flange of the bearing inner ring is arranged to prevent the bearing from escaping axially.
5. The outer top sleeve of the bearing is removed to prevent dust from entering the bearing box, maintain good oil quality, ensure the service life of the bearing, and operate safely and reliably.
6. As the diameter of the rolling bearing is enlarged, it forms a diameter difference with the average outer diameter of the hollow shaft. The use of a thin oil lubrication chamber has improved the thin oil level and reduced thin oil spillage.
7. Since the diameter of the hollow shaft where the rolling bearing is installed is thicker, the radial distance between the rolling bearing and the inlet and outlet spiral barrel is increased, which has a certain effect of heat insulation and cooling. Play a certain role in cooling the bearing and prolonging its service life.
Rolling bearing seat and bearing lubrication form Medium-diameter rolling bearing tube mill has been widely used in cement industry, mining industry, and electric power industry. The design and manufacture of bearing seats of rolling bearings are mostly lubricated by dry oil. Judging from the use situation in recent years, because on-site operators and oilers cannot observe the oil level in time, and cannot replenish the grease in time, the load of grease in the bearing box cannot be clearly reflected in time, and the bearing lacks oil and is not good. Phenomenon occurs from time to time. The lighter ones will shorten the bearing life, and the heavy ones will cause the bearing to be damaged. It is necessary to purchase and install new bearings, which brings a lot of inconvenience and certain economic losses to bearing manufacturers. In order to solve this problem, we have developed a new technology that uses thin oil lubricated rolling bearing seats.
The lower seat of the bearing seat is composed of two oil chambers and a circulating water chamber. The height of the thin oil surface of each oil chamber can be at the inner diameter of the bearing, and the bottom plane of the oil chamber can reach the bottom of the oil chamber. One third of the volume of the rolling bearing is immersed in the thin oil chamber to ensure good lubrication of the rolling bearing. There is a cooling circulating water jacket body in the middle of the two oil chambers, and the cooling water cools the oil temperature to a suitable temperature for the bearing. This arrangement can ensure the need for bearing lubrication, without the need to use external lubrication stations and other complex facilities, and without installing temperature control devices, to achieve safe operation.
In summary, this new hollow shaft and rolling bearing installation form and method is an improvement and improvement on the basis of the original installation method. This new thin oil lubricated bearing seat is essential to ensure good lubrication of the bearing.
