The advantages and disadvantages of rolling bearings

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advantages
1. The rolling bearing of the friction coefficient than sliding bearing small, high transmission efficiency. General sliding bearing of the friction coefficient is 0.08-0.12, and rolling bearing of the friction coefficient is only 0.001-0.005;
Rolling bearing2. Rolling bearing already realize standardization and serialization, generalization, and is suitable for mass production and supply, use and maintenance is very convenient;
3. Rolling bearing with bearing steel manufacturing, and after heat treatment, therefore, rolling bearing not only has high mechanical performance and long service life, and can save manufacturing sliding bearing the use of the price is relatively high non-ferrous metal;
4. Rolling bearing internal clearance is small, the parts processing precision is higher, therefore, high precision operation. At the same time, can advance through the method of add load bearing rigidity to increase. This is very important for precision machinery;
5. Some rolling bearing can be both radial load and axial load, therefore, can simplify the structure of bearing support;ball bearing suppliers
6. Because of the rolling bearing of high transmission efficiency, less heat, therefore, can reduce oil consumption, lubrication maintenance is convenient;
7. Rolling bearing can be easily used in any orientation of the uranium in space.
faults
1. The rolling bearing load ability of the same volume than sliding bearing much smaller, therefore, radial dimensions of rolling bearings. So, in to bear large load of occasions and requirements of small size, structure radial requirement compact occasions "as of the internal combustion engine crankshaft bearing), use the sliding bearing;
Sliding bearing
2. Rolling bearing vibration and noise is bigger,high speed bearings especially in the late use particularly remarkable, therefore, the high precision requirements, and shall not suffer a vibration occasions, rolling bearing difficult to do, the general selection of sliding bearings for bet ter efficacy
3. Rolling bearing on metal, and other eyewinkers particularly sensitive, bearings inside once in foreign body, can produce in an intermittent larger vibration and noise, also can cause early damage. In addition, rolling bearing for metal mingled with mass also easy to the possibility of an early damage. Even if not occurred early damage, rolling bearing life also have certain limit. In short, the life of the rolling bearing a sliding bearing shorter.
But, rolling bearing compared with sliding bearing, has its advantages and disadvantages, each taking a applicability, and therefore, they cannot completely replace each other, however, because of the rolling bearing prominent advantages, at present, rolling bearing has become the main bearing type machinery, application more and more widely.high speed bearing