Classification of outer ball bearing.com/cylindrical-roller-bearings.html' target='_blank'>cylindrical roller bearings and their advantages compared to sliding bearings What are the outer ball cylindrical roller bearings? The sliding friction between the running shaft and the shaft seat is changed into rolling friction by rolling elements (balls, rollers or needle rollers), thereby reducing friction loss. A precise mechanical element is called an outer ball cylindrical roller bearing. This article mainly introduces the structure, classification and advantages of outer ball cylindrical roller bearings compared with sliding bearings, and hopes to help you understand outer ball cylindrical roller bearings. The structure of the outer ball cylindrical roller bearing: the outer ring of the outer ball cylindrical roller bearing adopts a full complement cylindrical roller bearing with a thick outer ring wall, and the outer diameter surface of the roller has a cylindrical shape and an arc shape, which can be designed and raceway surface fit. With this outer ring, the rollers can roll directly on the raceway and can withstand heavier loads and shock loads. The bearing is a sealed structure, filled with grease to provide long-term effective lubrication, and users can avoid lubrication. For harsh operating conditions, a channel for supplementing grease can be designed to improve bearing service life. Improper method can also cause the outer ball cylindrical roller bearing to heat up. Lubrication can reduce the wear of parts in motion, ensure the accuracy of the press, and reduce energy consumption. Lubrication is divided into thin oil lubrication, thick oil lubrication, etc. The specific details about the outer ball cylindrical roller bearing are as follows: 1. Consists of an outer ring, a needle roller and cage assembly or a full complement needle roller set or a full complement cylindrical roller set, with an inner ring or without Complete unit with inner ring. 2. The roller is a full complement cylindrical roller structure, which is suitable for bearing very heavy load, and can also bear impact axial load at high speed. 3. The outer ring of this kind of bearing adopts roller type, with compact structure and thick outer ring wall, which can bear large impact force during rotation and has good wear resistance. 4. Like the cylindrical roller bearing, the outer ring is axially guided by the rolling elements and pressed into the outer ring to form a high-efficiency gap seal. 5. Closed drawn outer ring outer ball cylindrical roller bearing, inner ring outer ball cylindrical roller bearing and no outer ball cylindrical roller bearing. 6. The outer ring adopts arc surface design, with single, double sealing ring, without sealing ring, with sealing ring and other specifications and models. The composition of the combined outer ball cylindrical roller bearing: 1. The main roller The main roller is the main bearing body in a set of composite rollers. It mainly bears the vertical load and impact load, and has strong impact resistance, wear resistance and Corrosion resistance. Since the main roller is a full complement roller bearing, it can also be used alone as a one-way bearing. 2. Side roller The side roller is the second bearing body in a set of composite rollers. It mainly bears the horizontal load, and also has strong impact resistance, wear resistance and corrosion resistance. The side rollers are designed with full needle rollers without inner ring, and a mandrel replaces the inner ring and the shaft head to connect and carry. 3. The shaft head The shaft head is used as the connection part between the composite roller and the machine equipment. Usually the shaft head head is designed to be chamfered, which is convenient for installation. The shaft head can be directly welded to the equipment, or the shaft head can be welded with Assemble the connecting board and the device on the connecting board with the round hole. 4. Cover plate The function of the cover plate is to fix the side rollers installed inside the shaft head and the main roller outside the shaft head with nuts and thread glue at the tail of the shaft head. Structure of Outer Ball Cylindrical Roller Bearing | Classification of Outer Ball Cylindrical Roller Bearings and Advantages Compared with Sliding Bearing Classification of Outer Ball Cylindrical Roller Bearings: According to the purpose of the bearing, it can be divided into: (1) railway bearings (2) automobiles Bearings (3) Machine tool bearings (4) Aero-engine bearings (5) Motor bearings can be divided into: (1) High temperature bearings (2) Low temperature bearings (3) High speed bearings (4) Vacuum bearings (5) Antimagnetic bearings (6) Corrosion-resistant bearings Compared with sliding bearings, outer ball cylindrical roller bearings have the following advantages: 1. The friction coefficient of outer ball cylindrical roller bearings is smaller than that of sliding bearings, and the transmission efficiency is high. The friction coefficient of general sliding bearings is 0.08-0.12, while the friction coefficient of outer ball cylindrical roller bearings is only 0.001-0.005; 2. The outer ball cylindrical roller bearings have been standardized, serialized and generalized, and are suitable for mass production It is very convenient to supply, use and maintain; 3. The outer ball cylindrical roller bearing is made of bearing steel and has undergone heat treatment. Therefore, the outer ball cylindrical roller bearing not only has high mechanical properties and long service life, but also can save the more expensive non-ferrous metals used in the manufacture of sliding bearings; 4. The inner clearance of the outer ball cylindrical roller bearing is very small, The machining accuracy of each part is high. Therefore, the running accuracy is high. At the same time, the rigidity of the bearing can be increased by preloading, which is very important for precision machinery; 5. Some outer ball cylindrical roller bearings can bear radial load and axial load at the same time. Therefore, the structure of the bearing support can be simplified; 6. The outer ball cylindrical roller bearing has high transmission efficiency and less heat generation. Therefore, the consumption of lubricating oil can be reduced,Lubrication and maintenance are more convenient; 7. Outer ball cylindrical roller bearings can be easily applied to any axis in space.
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