Does the oilless bearing have a noise?
1, in general, oilless bearings in the regular manufacturers of the brand has its own design and design of external packaging design, and arrange the production conditions of the factory to produce production, therefore, the product packaging from the line to the color should be Is very clear and unambiguous
2, steel printing is clear: each bearing products will be printed on the body of the bearing body with its brand name, label and so on. Although the font is very small, but the regular manufacturers of products produced by the use of stamp printing technology, and before the heat treatment before the pressure word, so the font is small, but concave deep, very clear. And usually, counterfeit products, the font is not only blurred, because the printing technology is rough, the font floating on the surface, and some even easily can be wiped by hand or hand traces of serious
3, whether there is a noise: left hand holding the oilless bearing sleeve, the right hand toss the jacket to rotate, listen to the bearing during the operation of whether there is a noise. As most of the counterfeit products production conditions behind, completely hand-workshop operation, in the production process will inevitably be incorporated into the dust, sand, a class of impurities, so when the rotation of the bearing will appear when the noise or running is not smooth The This is to determine whether the product from the strict production standards, and the use of machine operation of the regular manufacturers of the key brand products.
oilless bearings are bearings that can work in the absence of oil or less oil, rather than the need for refueling, any product if the maintenance done well, can better extend the bearing life. Like the car can not be normal long-term maintenance, but will seriously affect the service life. Zhongcheng bearing production of oilless bearing performance can effectively extend the fuel interval, with high compression, wear resistance and excellent lubrication performance for more impurities, polluting work environment, is the value of oilless bearings Higher product.
oilless bearing material and the relationship between performance, rolling bearing rings and rolling body, while repeating high contact pressure, one side with a sliding contact with the sliding. Maintainer, one side and the rings and rolling body on both sides, or one of the sliding contact, one side of the tension and contraction. Thus, the bearing rings, rolling elements and maintenance of the information, performance and so on.
Ferrule Information Required performance: Rolling fatigue strength High hardness High abrasion resistance High, shelf material Required performance: Dimensional stability Good mechanical strength In addition, it is also necessary to have good machinability. According to the use of different, but also requested its impact resistance, heat resistance, good corrosion resistance.
oilless bearings in the host after the installation is complete, such as measuring the radial runout of the spindle, you can find that each turn of the measured values have a certain change; continuous measurement, you can find a certain number of revolutions, this change will be similar To repeat. The scale of the degree of change is the "quasi-periodic" of the cyclic rotation accuracy, and the magnitude of the change in the quasi-period is large, that is, the rotation rotation accuracy is poor The
A factory trial precision instruments, the spindle with 6202 / P2 bearing its accuracy is still unable to meet the requirements, after the rehearsal journal and in the production of raceway to replace the inner ring, and the ball to measure the thickness of the ball to the size Each of the three groups of each ball is separated by a distance of approximately 120 °, which reduces the weight of the shaft-bearing system by reducing the weight of a heavy-duty surface, while increasing the weight of the shaft-bearing system. Grain ball close to the equidistant distribution, but also improve the oilless bearing rotation accuracy, so to meet the accuracy requirements of the instrument.