What Are The Fracture Forms Of Bearing Rings? How Many Do You Know?
What Are The Fracture Forms Of Bearing Rings? How Many Do You Know?
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The structure characteristics of bearing factory in this paper, the skeleton oil seal of the concrete
by：Waxing
2020-11-17
Self-lubricating bearing factory to introduce the structure of the skeleton oil seal is simpler, usually composed of three some: oil seal body, strengthen the skeleton and the spiral spring.
At the bottom of the seal according to the different parts of the body is divided into, waist, blade and sealing lip, etc.
Usually, in the free state of skeleton oil seal, the inner diameter smaller than the diameter of axle, namely has surely 'interference'.
Thus, when oil seal in oil seal and the shaft seal edge pressure and self-tightening spiral spring shorten the force on the shaft of the radial force of will, through a period of time after operation, the pressure will be agile diminish or even disappear, as a result, combined with spring can compensate the oil seal since the force.
For there are between oil seal and the shaft seal edge control of oil film, the oil film are characteristic of fluid and smooth.
Under the effect of the liquid surface tension, the oil film stiffness to touch the end makes the oil film and the air to form a new moon face, avoid the leakage of work medium, then complete sealing of the axis of rotation.
Oil seal sealing ability, depend on the sealing surface of the oil film thickness, the thickness is too big, oil seal leakage;
Thickness is too small, dry conflicts may occur, causing the oil seal and shaft wear;
No oil film between the sealing lip on the shaft, it is easy to cause fever, wear and tear.
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