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Common problems and answers in the rolling bearings of KOYO bearings
Source: China Bearing Network Time: 2017-10-20
| /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089'; |
reply:
Yes. If KOYO bearings have foreign matter such as iron filings, burrs, dust, etc., the KOYO bearing will cause noise and vibration during operation; it will even damage the raceway and the rolling body. Therefore, before the device KOYO bearing; you need to To ensure the hygiene of the appearance of the device and the environment of the device.
Q: Is it necessary to remove the KOYO bearing unit?
reply:
KOYO bearing exterior is coated with anti-rust oil; you need to carefully clean it with hygienic gasoline or fire oil; then apply clean high-quality or high-speed high-temperature smooth grease to use the device. The effect of hygiene on KOYO bearing life and oscillation noise It is very big. But we have to remind you uniquely that the fully enclosed S KF bearings do not need to be refueled.
Q: How do you choose the smooth grease of KOYO bearings?
reply:
Smoothness has a very important influence on the operation and life of KOYO bearings. Here is a general guideline for analyzing smooth greases. Smooth greases are made from base oils, thickeners and additives; different varieties and different varieties are not the same trademark. The smooth grease function varies greatly; the rotation limit is not the same; it is necessary to pay attention when selecting. The function of smooth grease is mainly determined by the base oil. Usually the low viscosity base oil is suitable for low temperature, high speed and high viscosity. High load. Thickener is also related to the smooth function; the water resistance of the thickener determines the water resistance of the smooth grease. The standard; the smooth grease of different brands can not be mixed; and; even the smooth grease of the same thickener Will also have a bad influence on each other due to different additives.
Q: When smoothing KOYO bearings; the more grease is coated, the better?
reply:
When smooth KOYO bearings; the more grease is applied, the better; this is a common fault concept. Excessive grease in the bearing and bearing chamber will form excessive mixing of grease; extremely high temperatures will occur.
Q: How do you install and disassemble KOYO bearings?
reply:
Do not directly hammer the bearing end face and non-stress surface when installing the KOYO bearing; 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 smoother. The profit is large; the bearing should be placed in mineral oil and heated to 90~100 °C and immediately installed. When the disassembly is difficult, the professor suggests that you use the unpacking and pulling out to the inner ring. Hot oil; heat will cause the inner ring of the bearing to swell; then make it easier to fall.
Q: Is the radial clearance of KOYO bearings as small as possible?
reply:
Not all KOYO bearings require the smallest working clearance; you need to choose the appropriate clearance according to the conditions. GB 4604-93; rolling bearing radial clearance is divided into five groups - 2 groups, 0 groups, 3 groups, 4 groups, 5 groups; the clearance value is from small to large; the 0 group is the standard clearance. The basic radial clearance group is suitable for common working conditions, conventional temperature and common interference cooperation, at high temperature and high speed. Bearings operating under special conditions such as low noise and low friction should use large radial clearance. For radial bearings and bearings for machine tool spindles, small radial clearance should be used. For roller bearings, a small number of bearings can be adhered to. Work clearance. Others; there is no such thing as a clearance bearing, and finally; the working clearance after the bearing is installed; it is better than the original clearance before the device. The letter 浜 shrimp through the Han wounded 湫瘟 湫瘟.
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