Deep groove ball is a common type of rolling bearing. The basic type of deep groove ball bearing consists of an outer ring, an inner ring, a set of steel balls and a set of retaining structures. There are two types of deep groove ball bearing: single row and double row. The deep groove ball structure is also divided into seal and open type. The open type refers to the bearing without seal structure. The sealed deep groove ball is divided into dust seal and oil seal. The dust-proof seal cover is made of stamped steel plate, which can simply prevent dust from entering the bearing raceway. The oil-proof type is the contact oil seal, which can effectively prevent the lubricating grease in the bearing from overflowing.
The single-row deep groove ball bearing type code is 6, and the double-row deep groove ball bearing code is 4. Its structure is simple and easy to use, and it is a kind of bearing widely used in production. Deep groove ball bearing mainly bears radial load and can 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 the deep groove ball bearing is very small and the limit speed is very high.
Deep groove ball bearing is simple in structure and easy to achieve high manufacturing accuracy compared with other types. Therefore, it is convenient for series and mass production, low in manufacturing cost and very common in 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 seal ring, deep groove ball bearing with stop groove, deep groove ball bearing with large load capacity with ball gap and double row deep groove ball bearing.
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