Seal leaks treatment

Security seals of agricultural machinery and all kinds of mechanical equipment on the important parts, feeler IKO bearings are inserted into the above two between the roller and the outer circle around the center and the relative IKO bearings are widely used. This situation has seriously affected the agricultural machinery and a variety of mechanical equipment efficiency, not only increases fuel consumption and production costs, but also pollute the environment.

An oil seal works

1, the lubricant to the contact of the internal friction, and lubricant film formed by mixing and extruding by the fluid surface tension, the outer edge of the shaft and the seal edge to form a "new moon" face to prevent oil spill, play seal.
2, the work, the lip strap seals under pressure in the radial direction, is formed from 0.25 to 0.5 mm wide ring sealing contact. In the lubricating oil under pressure, the fluid penetrate between the seal edge and the shaft form a very thin film of oil.
3, free state, the oil seal lip smaller diameter than the shaft, with a certain amount of interference. After installation, the seal edge of interference and pressure from the tight contraction of the spring force on the rotation axis produce a certain radial pressure.

Second, the main factors causing oil seal leak

Seal Mifengbuyan is a major factor in causing oil spills. Forming a groove when the shaft is worn, even if still can not replace the seal when the seal is a lip seal with the shaft as the contact pressure drop, causing the lip seal after installation shaft diameter is too small amount of interference. Now with diesel engine crankshaft, for example, to analyze the Mifengbuyan is mainly due to: ① poor manufacturing quality seal; ② IKO bearing shaft or of poor quality; ③ using improper maintenance; IKO bearings measurement error does not mean that 10% of test tolerances can be relaxed ④ improper installation; ⑤ improper storage, adversely affected by environmental pollution.