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Rolling bearing device and application of common problems

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1. If there are foreign objects such as iron filings, burrs, dust, etc. in the bearing; the noise and oscillation will occur during the operation of the bearing; even the raceway and the rolling body will be damaged. Therefore, before the bearing of the device; you need to ensure the appearance of the device and Hygienic environment of the device.
2. Is it necessary to remove the bearing before the bearing? The outer surface of the bearing is coated with anti-rust oil; you need to carefully clean it with hygienic gasoline or fire oil; then apply the clean high-quality or high-speed high-temperature smooth grease to the device. The effect of bearing life and oscillating noise is very large. But we must uniquely remind you that the fully enclosed bearings do not need to be refueled.
3. How to choose smooth grease? Smoothness has a very important influence on the operation and life of the bearing. Here is a general guideline for analyzing and selecting smooth grease. Smooth grease is made of base oil, thickener and additives; The smooth grease function of the same brand is very different; the rotation limit of the promise is different; it is necessary to pay attention to the selection. The function of smooth grease is mainly determined by the base oil. Usually the low viscosity base oil is suitable for low temperature and high speed. High viscosity is suitable for high temperature and high load. Thickener is also related to smooth function; water resistance of thickener determines the water resistance of smooth grease. In principle, smooth grease with different brands cannot be mixed; and; even the same species Smoothing grease for thickeners; it can also have a bad effect on each other due to different additives.
4. In smooth bearings; the more grease is applied, the better? When smooth bearings; the more grease is applied, the better; this is a common fault concept. Excessive grease in bearings and bearing chambers will form excessive mixing of grease. Then a very high temperature occurs.
5. How to install and disassemble? Do not directly hammer the bearing end face and non-stress surface when installing the device; the bearing should be evenly stressed by the clamp, sleeve or other device. If the device is coated with smooth oil, it will make the device It is smoother. If the cooperation is too big, the bearing should be placed in mineral oil and heated to 90~100 °C. Immediately after installation. When it is difficult to disassemble, it is recommended that you use the open inner ring to pull outward together. Carefully spray hot oil; heat will cause the inner ring of the bearing to swell; then make it easier to fall.
6. Is the radial clearance of the bearing as small as possible? No. All bearings require the minimum working clearance; you need to choose the appropriate clearance according to the conditions. GB 4604-93; Rolling bearing radial clearance It is divided into five groups - 2 groups, 0 groups, 3 groups, 4 groups, 5 groups; the clearance value is sequentially from small to large; the 0 group is the standard clearance. The fundamental radial clearance group is suitable for the normal working conditions. Conventional temperature and common interference cooperation. Bearings operating under special conditions such as high temperature, high speed, low noise, low friction, etc. should use large radial clearance. For fine spindles, bearings for machine tool spindles, etc. Radial clearance, roller bearings can adhere to a small number of working clearance. Others; there is no such thing as the clearance of the bearings, and finally; the working clearance after the bearing is installed; the original clearance before the device. Fortunately, the ǖ 惺芤 ǖ 汉 汉 尚 尚 尚 尚 尚 尚 尚 汉 汉 汉 汉 汉 汉 汉.

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