Excellent KOYO bearing
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1. The friction coefficient of the rolling bearing is smaller than that of the sliding bearing, and the transmission efficiency is high. Generally, the friction coefficient of the sliding bearing is 0. 08-0. 12, and the friction coefficient of the rolled KOYO bearing is only 0. 001-0. 005; /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
2. The rolling bearing has been standardized, serialized and generalized, suitable for mass production and supply; it is very convenient to use and repair.
3. The tumbling bearing is made of KOYO bearing steel and is heat treated. Therefore, the tumbling KOYO bearing not only has high mechanical properties and long service life, but also can save the more expensive non-ferrous metal used for the sliding KOYO bearing;
4. The internal clearance of the rolling bearing is very small, and the machining precision of each part is high, so the working precision is high. Together, the rigidity of the KOYO bearing can be added by preloading. This is very important for precision machinery;
5. Some tumbling bearings can accept both radial and axial loads, thus simplifying the layout of KOYO bearing bearings;
6. Because the rolling bearing has high transmission efficiency and low heat generation, it can reduce the consumption of smooth oil, and the smooth protection is more labor-saving;
7. Rolling bearings can be conveniently used on uranium in any orientation in space.
The professor showed that all things are divided into two. Rolling KOYO bearings also has certain defects. The first is:
1. The bearing capacity of the rolling bearing is much smaller than that of the sliding KOYO bearing of the same volume. Therefore, the radial dimension of the tumbling KOYO bearing is large. Therefore, in the case of accepting a large load and the case where the radial dimension is small and the layout demand is compact, such as Internal combustion engine crankshaft KOYO bearing), mostly use sliding KOYO bearings,
2. The rolling bearing has large oscillation and noise, and the uniqueness is especially obvious in the later stage of operation. Therefore, in the occasion where the demand for precision is high and there is no oscillation, the rolling bearing is difficult to perform, and the sliding KOYO bearing is generally better. Rolling bearings are uniquely sensitive to foreign objects such as metal chips. Once KOYO bearings enter foreign bodies, they will have intermittent large oscillations and noise, which will lead to early damage. In addition, the rolling bearings are prone to early damage due to metal clip impurities. Possibility. Even if there is no early damage, the life of the rolling bearing has a certain limit. In total, the life of the rolled KOYO bearing is shorter than that of the sliding KOYO bearing.
However, compared with the sliding KOYO bearing, the tumbling KOYO bearing has its own excellent defects, each of which has certain applicable occasions. Therefore, the two cannot be completely replaced with each other. However, because of the outstanding advantages of tumbling KOYO bearings, currently, the tumbling KOYO bearing has been carried out. Become the primary support type of machinery, and use it more and more widely.
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