Factory direct supply deep groove ball bearing 6205-2RS Xingruida rolling bearing custom

Deep Groove ball bearing is the most common type of rolling bearing. The basic deep groove ball bearing consists of an outer ring, an inner ring, a set of balls and a set of cages. Deep Groove ball bearing type has single row and double row two kinds, single row deep groove ball bearing type code is 6, double row deep groove ball bearing code is 4. Its structure is simple, easy to use, is the most common production, the most widely used type of bearings. Deep Groove ball bearings mainly bear radial load, but also can bear both radial load and axial load. When it only bears radial load, the contact angle is zero. When deep groove ball bearing has large radial clearance, it has the performance of angular contact bearing, can bear large axial load, the friction coefficient of deep groove ball bearing is very small, the limit speed is also very high. Deep Groove ball bearing structure is simple, compared with other types of easy to achieve higher manufacturing accuracy, so easy to form a series of mass production, manufacturing costs are low, the use is very common. In addition to the basic types of deep groove ball bearings, there are various types of variant structures, such as: Deep Groove ball bearings with dust-proof covers, deep groove ball bearings with rubber seals, deep groove ball bearings with stop grooves, deep groove ball bearings with large load capacity with ball gaps, double row deep groove ball bearings, deep groove ball bearings can be used for transmission, instrumentation, electrical, household appliances, internal combustion engines, traffic vehicles, agricultural machinery, construction machinery, construction machinery, Yo-yo, etc. , deep groove ball bearing mainly plays the role of supporting and reducing friction in machinery, so the precision and noise of deep groove ball bearing are directly related to the use and life of machinery. But business people always meet some customers even the best use of deep groove ball bearings or imported deep groove ball bearings its efficiency is not high, which is related to the use of deep groove ball bearings and selection. It may be said that the use and selection of deep groove ball bearings is a matter for the user, I only care about what the user wants what I sell. However, as a qualified salesman, he should be proficient not only in product knowledge, but also in the use of products, that is, the sales of doctors, according to the performance of the user’s products, use conditions to choose the best supporting deep groove ball bearings. This is the current major companies in the world of specialized manufacturing and sales, this approach has also achieved good results in the implementation of the group. Because deep groove ball bearing types of a wide range, the following will be the most widely used deep groove ball bearing use and selection of some analysis. It is hoped that people who know less about deep groove ball bearings can deepen their understanding of deep groove ball bearings. The choice of deep groove ball bearing 2, deep groove ball bearing clearance choice: Users in the purchase of deep groove ball bearing generally only informed in what type, grade, rarely on deep groove ball bearing clearance requirements, business personnel must ask the deep groove ball bearings use conditions, which deep groove ball bearings speed, temperature, fit tolerance are directly related to the choice of deep groove ball bearings clearance. Generally in 3500 rpm/sub-speed motor mostly CM clearance, such as high-temperature high-speed motor is required to use a relatively large clearance. The clearance of deep groove ball bearing will be reduced after assembly because of the enlargement of inner hole and the reduction of outer circle. The reduction of clearance = interference amount × 60% (except deep groove ball bearing chamber which is made of aluminum) . For example, the clearance of deep groove ball bearing before assembly is 0.01 mm, the interference is 0.01 mm, then the clearance of deep groove ball bearing after assembly is 0.004 mm. In theory, the deep groove ball bearing has the best noise and service life when it has zero clearance, but in practical operation, the clearance of deep groove ball bearing is 0.002 mm-0.004 mm. 3, Grease Selection: Grease selection is generally based on the deep groove ball bearing speed, temperature conditions, noise requirements and starting Torque and other aspects of the selection, business personnel is required to understand the performance of a variety of grease. 4, deep groove ball bearing seal type selection: Deep Groove ball bearing lubrication can be divided into oil lubrication and grease lubrication. Oil-lubricated deep groove ball bearings are generally used in the form of deep groove ball bearings, grease-lubricated deep groove ball bearings are generally used in the dust cover or rubber seal. Dust cover is suitable for high temperature or good use environment parts, sealing parts are divided into contact seal and non-contact seal, contact seal has good dust-proof performance but large starting Torque, non-contact seal starting Torque is small, but the sealing performance is not as good as the contact type. People-oriented deep groove ball bearings are currently specialized in the manufacturing of deep groove ball bearings for automobile motors, household electrical appliances, motorcycles and health care motors, so that the deep groove ball bearing noise and life to achieve the best state. 2. Matters needing attention in use of deep groove ball bearing 1. Selection and control of tolerance of shaft and deep groove ball bearing chamber: Deep Groove Ball bearing pressed into deep groove ball bearing should rotate flexibly without blocking feeling. If there is obvious rotation is not flexible, then the shaft size is too large, tolerance to be reduced. If the deep groove ball bearing pressed into the shaft after the rotation by hand has obvious sand feeling, may be the shaft tolerance is too large or shaft roundness is not good. So in the control of shaft and deep groove ball bearing room tolerance to control the roundness, at present, many manufacturers only on the tolerance control, not on the roundness control. 2, Deep Groove Ball bearing assembly: Because Deep Groove ball bearing is high precision products, such as improper assembly is easy to deep groove ball bearing groove damage, resulting in deep groove ball bearing damage. Deep Groove ball bearing in the assembly should have a dedicated mold, can not beat at will, in the pressure shaft can only be small ring force, pressure circle can only be large ring force. Assembly requires the use of pneumatic or hydraulic, in the press-fit mold to be outside the horizontal state, if there is a tilt will lead to deep groove ball bearing raceway because of stress damage, so that deep groove ball bearing has a guide ring. 3, PREVENT THE ASSEMBLY OF FOREIGN BODIES: Deep Groove ball bearings installed on the rotor to do dynamic balance when it is easy to dynamic balance generated when the iron into the deep groove ball bearings inside, it is best to install deep groove ball bearings to do dynamic balance. Some manufacturers in order to assembly convenience, assembly in the deep groove ball bearing room coated with some oil or grease lubrication effect, but often operators are difficult to control the amount, if the oil or grease in the deep groove ball bearing room more accumulation, when deep groove ball bearings rotate, it is easy to enter the deep groove ball bearings along the shaft. Deep Groove ball bearing room is best not to smear oil or grease, if necessary to control the deep groove ball bearing room is not allowed to accumulate. 4, THE PREVENTION OF PAINT RUST: PAINT RUST is the characteristics of the motor in the sealed, the motor assembly sound good, but put some time in the warehouse, the motor abnormal sound becomes very big, remove deep groove ball bearings have serious rust phenomenon. Before many manufacturers will think is the problem of deep groove ball bearing, after our constant publicity, now the motor factory has realized that the main problem is insulation paint. The main reason for this problem is that the volatile acid from the insulating paint forms a corrosive substance at a certain temperature and humidity, which corrodes the groove of the deep groove ball bearing and leads to its damage. The problem at present can only be selected good insulation paint, and after drying ventilation for a period of time after assembly. The service life of deep groove ball bearing is closely related to manufacture, assembly and use. It must be done well in every link to make the deep groove ball bearing in the best running state, so as to extend the service life of deep groove ball bearing.