Zhejiang Waxing Electromechanical Co., Ltd is one of the most professional manufacturers and suppliers of 7308becbp angular contact ball bearing in China. Welcome to buy high quality customized bearings made in China here from our factory. For price consultation, contact us.
7308 single row angular contact ball bearings
7308 BECBP angular contact ball bearings can bear radial load and axial load at the same time. Can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase. Single row angular contact ball bearings can only bear axial load in one direction, and will cause additional axial force when bearing radial load. And it can only limit the axial displacement of the shaft or housing in one direction. If it is installed in pairs, make the outer rings of a pair of bearings face each other, that is, the wide end faces the wide end face, and the narrow end faces the narrow end face. This avoids causing additional axial forces and limits the shaft or housing to axial play in both directions.
1. Classification of angular contact ball bearings
1. Single row angular contact ball bearings
(1) Single row angular contact ball bearings mainly include 718, 719, 70, 72, 73 and other series, and the outer diameter and thickness of bearings of different series with the same inner diameter increase sequentially according to the above order. Example 71900 has the same inner diameter as 71800, but the outer diameter and thickness are larger than the latter.
(2) Angular contact ball bearings can bear (one-way) axial and radial forces at the same time. The contact angle generally has 15° (suffix C), 25° (suffix AC), 30° (suffix A) and 40° (suffix B), the smaller the angle, the smaller the axial load and the faster the speed, and vice versa , the greater the axial load, the slower the speed.
2. Double row angular contact ball bearings
Double row angular contact ball bearings are angular contact ball bearings with double rows of balls, but occupy less axial space (the thickness is slightly narrower than two single row angular contact ball bearings), and can limit the bidirectional axial displacement of the shaft or housing. The contact angle is 30°. Highly rigid bearing arrangements are available and are capable of withstanding overturning moments. It is widely used in the front wheel hub of cars.
3. Four-point angular contact ball bearings
Separable bearings can bear radial loads and bidirectional axial loads, and the thickness of bearings of the same size is smaller than that of double row angular contact ball bearings. It is mostly used for roll positioning in rolling mills. There are two common types: double half outer ring (QJF type) and double half inner ring (QJ type).
4. Thrust angular contact ball bearings
Two-way thrust angular contact ball bearings are used together with double-row cylindrical roller bearings to withstand two-way axial loads. It is divided into two series, 2344 and 2347. The 2344 series is used for the small fit with the tapered hole of the double row cylindrical roller bearing, while the 2347 is used for the large fit.
5. Ball screw support bearing
The ball screw support bearing is a one-way thrust angular contact ball bearing with a contact angle of 60°, which is especially suitable for the support of high-speed precision CNC machine tools. The common ones are 7602 (standard metric system), 7603 (standard metric system), BS (non-standard metric system) and BSS (non-standard imperial system) series.
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