Deep groove ball SKF Bearing is the most common type. 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. There are two types of deep groove ball bearings: single row and double row. The deep groove ball structure is also divided into sealed and open structures. Open means that the bearing does not have a sealed structure. The sealed deep groove ball is divided into dust seal and oil seal. The dust-proof sealing cover is made of steel plate stamping, which only plays a simple role in preventing dust from entering the bearing raceway. The oil proof type is a contact oil seal, which can effectively prevent the grease overflow in the bearing. The type code of single row deep groove ball bearing is 6, and the code of double row deep groove ball bearing is 4. The utility model has the advantages of simple structure and convenient use. It is the most widely used bearing in production.
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 deep groove ball bearing has large radial clearance, it has the performance of angular contact bearing and can bear large axial load. The friction coefficient of deep groove ball bearing is very small and the limit speed is also very high. Deep groove ball bearing has simple structure and is easy to achieve high manufacturing accuracy compared with other types. Therefore, it is convenient for series mass production, low manufacturing cost and widespread use. In addition to the basic type, the deep groove ball bearing also has various variant structures, such as: deep groove ball bearing with dust cover, deep groove ball bearing with rubber sealing ring, deep groove ball bearing with stop groove, deep groove ball bearing with large load capacity with ball notch, and double row deep groove ball bearing.
Deep groove ball bearing is the most representative rolling bearing with a wide range of applications. It is suitable for high-speed or even extremely high-speed operation, and it is very durable without regular maintenance. This kind of bearing has the advantages of small friction coefficient, high limit speed, simple structure, low manufacturing cost and high manufacturing accuracy. The size range and forms vary. It is used in precision instruments, low-noise motors, automobiles, motorcycles and general machinery industries. It is the most widely used SKF Bearing in the machinery industry. It mainly bears radial load and a certain amount of axial load.
When a larger radial clearance is selected, the axial bearing capacity increases, and the contact angle is zero when bearing pure radial force. When there is axial force, the contact angle of SKF is greater than zero. Generally, stamping wave cage, turning solid cage and sometimes nylon cage are used. After the SKF deep groove ball bearing is installed on the shaft, the axial displacement in both directions of the shaft or housing can be limited within the axial clearance of the bearing, so it can be positioned axially in both directions. In addition, this kind of bearing also has a certain centering ability. When it is inclined 2 ′～ 10 ′ relative to the shell hole, it can still work normally, but it has a certain impact on the service life of the bearing. Deep groove ball bearing cages are mostly steel plate stamping wave cages, and large bearings mostly adopt vehicle made metal solid cages.
Deep groove ball bearing is the most commonly used rolling bearing. The utility model has the advantages of simple structure and convenient use. It is mainly used to bear radial load, but when the radial clearance of the bearing is increased, it has certain performance of SKF angular contact bearing and can bear combined radial and axial load. When the rotating speed is high and the thrust ball bearing is not suitable, it can also be used to bear pure axial load. Compared with other types of bearings with the same specification and size of deep groove ball bearing, this kind of bearing has small friction coefficient and high limit speed. However, it is not resistant to impact and is not suitable to bear heavy load.
Deep groove ball SKF bearings can be used in gearboxes, instruments and meters, motors, household appliances, internal combustion engines, traffic vehicles, agricultural machinery, construction machinery, engineering machinery, roller skates, yo yo, etc