IKO bearing oil seal oil - bearing knowledge reason and repair method

Oil seal is of great importance in agricultural machinery and all kinds of machinery and equipment parts, feeler insert IKO bearing is between the above 2 column roller and outer circle and relative IKO bearing center or so widely used. The performance and quality directly affects the reliability of agricultural machinery and all kinds of mechanical equipment use. Some of the oil seal long life is one year, few months and transplanting, because of the untight seal oil scrapping. This situation seriously affects the efficiency of the agricultural machinery and all kinds of machinery and equipment, not only increase the fuel consumption and production cost, and environmental pollution. A, 1, the working principle of oil seal free state, the inner diameter smaller than the diameter of axle of the oil seal lip, has a certain amount of interference. 2. After installation, oil seal edge of interference stress and the self-tightening spring contraction force certain radial pressure on the axis of rotation. 5 mm wide contact seal ring. Under the effect of lubricating oil pressure, oil into the oil seal edge between the rotor and form a very thin layer of oil film. Lubricant in the contact of internal friction and lubricant of mixing and extrusion effect, the surface tension of oil film by the oil in the shaft and the oil seal edge along the formation of a 'new moon' to prevent oil spills, sealing effect. Second, the main factors of oil seal oil seal untight seal is the main factor of the spill. When axis wear groove, even change the new oil seal still cannot seal, is due to the oil seal lip contact with axial pressure drop, cause after installation of the oil seal lip diameter and the diameter of axle surplus quantity is too small. Now a S195 diesel engine crankshaft oil seal, for example, to analyze its untight seal main reason is that: (1) oil seal manufacturing quality is poor; (2) poor quality of shaft or IKO bearings; (3) use of improper maintenance; IKO bearing measurement error does not mean test tolerance can relax 10% (4) improper installation; (5) it was improperly secured, the adverse impact on environment pollution. Three, oil seal is lax and the spill countermeasures 1, master the basic knowledge of and identification of false and inferior product, quality and standard of choose and buy oil seal. 2, when installation, if the outside diameter of axle surface roughness is low or there are defects such as rust stain, rust, burr, with a fine emery cloth or abrasive polishing smooth; On the oil seal lip or trunnion position corresponding to clean oil or grease. Oil seal outer coated with sealant, use hard paper to wrap shaft keyway position, avoid scratch oil seal lip, with a special tool rotary press it into a seal to, don't be hard to hit hard, in case of deformation or crowded broken springs and oil seal failure; If the flange flanging, spring, fall off and oil seal must be removed to reload the skew. It should be noted that: when there is no wear and diameter of axle seal spring force is enough, do not tighten the spring. 3, the application in agricultural machinery seal on the general working conditions, environmental temperature, dust, machine vibration force changing frequently make part, regular inspection, maintenance and maintenance. 4, such as the diameter of axle and IKO bearing wear serious; Oil seal rubber aging or spring failure, etc. , should be in time for repair and replacement parts accordingly. Provide each IKO bearing users worry-free operation is the ultimate goal of Qingdao rui fine IKO bearing mechanical and electrical 5, the abnormal heating components or assemblies shall be timely troubleshooting; Avoid mechanical overspeed and overload operation, to prevent the oil seal lip temperature, aging and lip early wear of rubber, etc. 6, often should check the oil oil level, if too much oil impurities, entity alloy powder, metal scrap iron to completely replace the new oil. By changing oil brand and quality to meet the requirements of the season. 7, temporarily without oil seal, should be properly kept, prevent with greasy dirt, dust or the sun. 8, when the diameter of axle wear into a 'V' shaped groove, the new oil seal lip contact with axial pressure drop in oil sealing role, can't, can choose AR a 5 a two-component adhesive glue, is simple and reliable and wear-resisting. Can also adopt the method of oil seal shift to make up for.