Function of deep groove ball bearing

Deep groove ball bearing is a common type of rolling bearing. The basic deep groove ball bearing is composed of an outer ring, an inner ring, a group of steel balls and a group of retaining structures.  single row and double row. 

• The type code of single row deep groove ball bearing is 6 and the code of double row deep groove ball bearing is  The utility model has the advantages of simple structure and convenient use. It is a kind of bearing with universal production and wide application.
• Deep groove ball bearings mainly bear radial load, and can also bear radial load and axial load at the same time. When it only bears radial load, the contact angle is zero. When the large radial clearance, it has the performance of angular contact bearing and can bear large axial load. The friction coefficient is very small and the limit speed is also very high.
• Has simple structure and is easy to achieve high manufacturing accuracy compared with other types, so it is convenient for series mass production, low manufacturing cost and widespread use. In addition to the basic type, the  also has various variant structures, such as: deep groove ball bearing with dust cover, deep groove ball bearing with rubber seal ring.
• Deep groove ball bearings can be used in gearboxes, instruments, motors, household appliances, internal combustion engines, traffic vehicles, agricultural machinery, construction machinery, engineering machinery, yo yo, etc
• Deep groove ball bearing mainly plays the role of supporting and reducing friction in machinery, so the accuracy and noise of deep groove ball bearing are directly related to the service life of machinery. However, business personnel often encounter some customers, that is, the efficiency of or imported deep groove ball bearings is not high, which is related to the use and selection. 
• Some people may say that the use and selection of the business of users. I only care what users want and what I sell. However, as a qualified salesperson, in addition to being proficient in their own product knowledge, they should also be proficient in the use of products, that is, doctor type sales, and the matching deep groove ball bearings selected according to the performance and service conditions of users’ supporting products. 
• This is the professional manufacturing and sales popular among major companies in the world. This method has also achieved good results since its implementation in renben group.
• Because there are many types and a wide range of deep groove ball bearings, the following will mainly analyze the use and selection  a wide range of applications. It is hoped that those who know less about  can deepen their understanding of deep groove ball bearings.
• Selection and control of tolerance of shaft and  chamber: the deep groove ball bearing shall rotate flexibly without blocking feeling after being pressed into the deep groove ball bearing. If there is obvious inflexible rotation, it indicates that the size of the shaft is too large and the tolerance should be reduced.
•  If the deep groove ball bearing has obvious sand feeling when rotating by hand after being pressed into the shaft, it may be that the tolerance of the shaft is too large or the roundness of the shaft is not good. Therefore, when controlling the tolerance of shaft and  chamber, it is also necessary to control the roundness. At present, many domestic manufacturers only control the tolerance, not the roundness.
• Assembly method of deep groove ball bearing: because deep groove ball bearing is a high-precision product, if it is not assembled properly, it is easy to damage and cause damage to . The  shall be equipped with a special mold during assembly, and can not be knocked at will.
•  When pressing the shaft, only the small ring can be stressed, and when pressing the large ring, only the large ring can be stressed. Pneumatic or hydraulic pressure is required during assembly. During press assembly, the upper and lower molds shall be outside the horizontal state. If there is inclination, the  will be damaged due to stress.
• Prevention of assembly foreign matters: when the  is installed on the rotor for dynamic balance, it is easy to put the iron filings generated during dynamic balance into the deep groove ball bearing, so it is necessary to perform dynamic balance .
•  In order to facilitate assembly, some manufacturers apply some oil or grease in the deep groove ball bearing chamber for lubrication effect during assembly, but it is often difficult for the operator to control the amount.
•  If more oil or grease is accumulated in the deep groove ball bearing chamber, it is easy to enter the deep groove ball bearing along the shaft when the deep groove ball bearing rotates. The deep groove ball bearing chamber shall not be coated with oil or grease. If it must be coated, it shall be controlled, and there shall be no accumulation.
• Prevention of paint rust: paint rust is often found in sealed motors. The sound of the motor is very good during assembly, but after being placed in the warehouse for some time, the abnormal sound of the motor becomes very large, and there is serious rust when. 
• In the past, many manufacturers thought it was the problem of deep groove ball bearings. After our continuous publicity, now the motor factory has realized that it is mainly the problem of insulating paint. This problem is mainly because the acidic substances volatilized from the insulating paint form corrosive substances at a certain temperature and humidity.
• which corrodes the channel of the deep groove ball bearing and leads to the damage of the deep groove ball bearing. At present, the problem can only be to select good insulating paint and assemble after drying and ventilation for a period of time.
• The service life of deep groove ball bearing is closely related to manufacturing, assembly and use. It must be done well in each link in order to make the deep groove ball bearing in the running state, so as to prolong the service life of deep groove ball bearing. Generally, the installation space of double row cylindrical roller bearings is limited. In most cases, the shaft diameter (or bearing inner diameter) is limited by mechanical design or other design. 
• Therefore, the selection of bearing type and size is determined according to the inner diameter of the bearing. Therefore, the main dimension tables of standard bearings are compiled according to the international standard inner diameter dimensions.
• Standard double row cylindrical roller bearings have various sizes and forms, In the design of mechanical devices, standard bearings are used (considering whether the bearings are easy to purchase, as an aside, some models in the bearing catalogue do exist, but some non-standard bearings are not available in stock in Chinese Mainland. Sometimes the futures will take a long time, so the time cost and later replacement cost should be considered in the bearing selection). 
• The load imposed on the bearings is the load of double row cylindrical roller bearings, Its nature, size and direction are changeable. In general, the rated base load is shown on the dimension table. However, axial load and radial load are also important factors in selecting suitable bearings. When the ball and needle roller bearings have the same size, double row cylindrical roller bearings usually have high load capacity and bear large vibration and impact loads.