There are three common forms of non-contact sealed bearings: the gap seal, dumped oil ring seal and labyrinth seal. Because of the gap, with the exception of the dumped oil ring seal, non-contact seals are used for grease lubrication occasions. In order to improve the reliability of sealing all kinds of sealing can be used in combination.
Non-contact seal device has several advantages: the seal gap Department will not be in addition to the internal friction of the existence of a lubricant other friction, non-contact seal does not produce wear; use a very long time does not produce significanttemperature rise; be applied to the speed higher. Seal the gap is not too large, otherwise the effect of sealing poor.
您使用的是内部测试版语言。该语言的相关内容仍处于早期开发阶段，但我们想让您先睹为快！" aria-label="您使用的是内部测试版语言。该语言的相关内容仍处于早期开发阶段，但我们想让您先睹为快！">Alpha Parts of the non-contact seal bearing support including: Clearance seal. Its simple structure, to meet the sealing requirements under the general conditions. The choice of the gap e d ≤ 50mm, e = 0.25 ~ 0.40mm; d> 50mm, e = 0.25 ~ 0.6mm.
Groove seal. Groove fill grease, dust is difficult to invade, there are two forms of the ring groove and the helical groove. Ring groove 3. Width b = 3 ~ 5mm; groove depth t = 4 ~ 5mm.
The labyrinth seal. The sealing effect when the maze labyrinth filled grease groove seal. The labyrinth seal can be divided into radial and axial two forms. The choice of the radial and axial clearance: d ≤ 50mm, a = 0.20 ~ 0.30mm, b = 1.0 ~ 1.5mm; d = 50 ~ 200mm, a = 0.30 ~ 0.50mm, b = 1.5 ~ 2.0mm.
Diagonal labyrinth seal. It is used to the curved road incline shaft deflection with the center of swing. Diagonal labyrinth seal labyrinth filled grease can achieve a good sealing effect.
Dumped oil ring seal. Oil lubrication, the shaft out of the trench or install a ring, For outward loss of oil can be thrown along the radial direction and flow back into the oil tank, oil collecting chamber and the hole through the bearing cover. Can also close to the bearing was installed a toss of oil ring, this structure is often the gap seal used in conjunction.
Stamping steel labyrinth seal. Synthetic labyrinth seal by stamping steel stamping steel can rely on with the mounted on the shaft or housing, without axial fastening structure is simple. Stamping steel maze labyrinth filled with grease, has a good sealing effect.



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