Bearing oil seal leak causes maintenance

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The oil seal is an important part in the agricultural machinery and various types of machinery and equipment, feeler gauge inserted between the two roller bearing just above and outside the circle wide ran ge of applications and about the relative bearing center. Its direct impact on the performance and quality of agricultural machinery and mechanical equipment reliability. Some oil seal and long life, ranging from a few months or even 35 days, from Mifengbuyan oil spill scrapped. This situation has seriously affected the efficiency of agricultural machinery and mechanical equipment, not only increases fuel consumption and production costs, and pollution of the environment.

, Oil seal works, a free state, the oil seal lip diameter is smaller than the shaft diameter, has a certain amount of interference. 2, after installation, the seal edge of the interference pressure and self-tightening spring force of contraction of the rotation axis radial pressure. 3, work, the lip seals in the role of a radial pressure, forming a sealing contact with the ring-shaped band of 0.25 to 0.5 mm wide. The role of the lubricant pressure, the fluid penetrate between the seal edge and t he rotating shaft to form a very thin layer of film. Lubricant in contact at the internal friction, and the lubricant was stirred and extruded film by the fluid surface tension effect, a "new moon" face to prevent oil spills, the sealing function is formed in the rotating shaft and the seal edge outer edge . thrust ball bearing

The main factors the oil seal Mifengbuyan is oil seal leak caused by the oil spill caused major factors. When shaft appear wear trench is formed, even if the replacement of a new Seal still not sealed, is due to the contact pressure of the lip seals and the shaft is decreased, the amount of interference caused after the installation diameter of the seal lip and the shaft diameter is too small. Now S195 diesel engine crankshaft, for example, the analysis of the main reasons for its Mifengbuyan: â'  oil seal manufacturing quality is poor; â'¡ shaft or bearing of poor quality; â'¢ improper maintenance; bearing measurement error tolerance does not mean that testing can be eased by 10% â'£ improper installation, improper storage; â'¤ adversely affected by environmental pollution.

, The oil seal Mifengbuyan oil spill countermeasures master and basic knowledge of the identification and shoddy products, to buy high-quality, standard oil seals. 2, installation, the shaft diameter outer surface roughness is low or rust, corrosion, since burrs, polished smooth to use fine emery cloth or Whetstone; coated with clean oil or grease or shaft diameter corresponding position in the oil seal lip. Oil seal outer ring coated with a sealant, the shaft keyway parts wrapped with cardboard to avoid scratching the oil seal lip with special tools, oil seal pressed into inward rotation, do not be hard hit hard punch to prevent oil seal deformation or squeeze off spring failure; lip flanging, must be removed in the spring off and oil seals skew r eload. It should be noted that: Do not attempt to tighten the inner spring when the shaft diameter no wear and oil seal spring elastic enough. 3, poor general working conditions of the oil seal used in agricultural machinery, environmental temperature, dust and more machinery vibration frequent mechanical force status changing, ground inspection, maintenance and repair work. 4, the shaft and bearing wear serious; aging oil seal rubber or spring failure timely repair and replacement of the corresponding parts. The provide each bearing users worry-free operation is the ultimate goal of Qingdao Swiss precision bearings electromechanical not normal fever parts or assembly shall promptly troubleshooting; avoid mechanical overspeed, overload, to prevent the temperature rise of the oil seal lip rubber aging, the lip early wear. 6 to frequently check the oil level, oil impurities is too much, there are alloy powder metal iron filings to be completely replaced with new oil. Brand and quality of the oil change to comply with the requirements of the season. Temporarily without the oil seal should safekeeping, to prevent stained with oil, dust or sun exposure. 8, when the shaft diameter wear a "V"-shaped trench, so that the new oil seal lip contact with the shaft pressure down when you can not play the role of seal oil, optional AR-5 two-component adhesive sticky complement, simple, reliable and wear-resistant . Seal shift method can also be used to compensate. thin ball bearings