3112294 BRG For HITACHI ZW310-5A QSM11-1

Rollingbearing is a precise mechanical element that changes the sliding friction between the running shaft and the shaft seat into rolling friction, thus reducing the friction loss. Rolling bearings are generally composed of four parts: inner ring, outer ring, rolling body and cage. The function of the inner ring is to match and rotate with the shaft. The function of that out ring is to cooperate with the bear seat and play a supporting role; Rolling elements are evenly distributed between the inner ring and the outer ring by means of cages, and their shape, size and number directly affect the service performance and life of rolling bearings; The cage can make the rolling elements evenly distributed and guide the rolling elements to rotate for lubrication. Support the rotating shaft and the parts on the shaft, and keep the normal working position and rotating accuracy of the shaft. The rolling bearing is convenient to use and maintain, reliable in work, good in starting performance and high in bearing capacity at medium speed. Compared with sliding bearing, rolling bearing has larger radial dimension, poor vibration reduction ability, short service life and loud noise at high speed. As one of the most commonly used connection methods in mechanical devices, rolling bearing is very important for the normal operation of the machine and the improvement of production efficiency.

Rolling bearing is a kind of precision mechanical element that changes sliding friction between running shaft and shaft seat into rolling friction, thus reducing friction loss. Rolling bearings are generally composed of inner ring, outer ring, rolling body and cage. The inner ring is matched with the shaft and rotates together with the shaft. The outer ring is matched with the bearing seat and plays a supporting role. Rolling elements are evenly distributed between the inner ring and the outer ring through the cage, and their shape, size and quantity directly affect the service performance and life of the bearing. Cage, which makes the rollers evenly distributed, guides the rollers to rotate and plays a role in lubrication. Lubricant is also considered as the fifth largest part of rolling bearing, which mainly plays the role of lubrication, cooling and cleaning. Rolling bearings are divided into radial bearings and thrust bearings according to different bearing directions or nominal contact angles. According to the types of rolling elements, it can be divided into ball bearings and roller bearings. According to whether it is self-aligning, it can be divided into self-aligning bearings and non-aligning bearings. According to the number of rows of rolling elements, it is divided into single row bearings, double row bearings and multi-row bearings. According to whether the components can be separated, they can be divided into separable bearings and inseparable bearings.

Rolling bearing is a kind of mechanical element with steel balls or cylinders between inner and outer cylindrical rings, which consists of inner and outer rings and rolling bodies inside the bearing. Rolling bearings are widely used in mechanical transmission systems, aerospace, high-speed trains, machine tools, automobiles and agricultural machinery. Rolling bearing reduces friction loss by converting sliding friction between running shaft and shaft seat into rolling friction. The inner ring is tightly matched with the shaft and rotates together, and the outer ring is matched with the bearing seat hole or the shell of the mechanical part to play a supporting role. Rolling bodies are evenly arranged between the inner ring and the outer ring by means of cages, and their shape, size and number directly affect the bearing capacity and service performance. The cage evenly separates the rolling elements, guides the rolling elements to move on the correct track, and improves the internal load distribution and lubrication performance of the bearing. The main function of rolling bearing is to reduce the friction and resistance between the moving shaft and the bearing part, thus reducing the running cost of the machine and prolonging the service life of the machine. It bears and transmits the load on the shaft by rolling, and can realize highly accurate position control in a wide range of load and speed. Rolling bearing plays an important role in mechanical transmission, which can reduce machine cost, improve work efficiency and prolong machine service life. Through the rolling mode, the rolling bearing can bear the load, realize high-precision position control, and have higher durability and diversity.