Bearing non-contact sealing form
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: Selected wxnjf Published :2011-12-5 22:00:16 text: medium and small Views: 0
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 significant temperature rise; be applied to the speed higher. Seal the gap is not too large, otherwise the effect of sealing poor.
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.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
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Your current location: non-contact seal bearing supplier network> Technology> processing> bearing the form of: Selected wxnjf Published :2011-12-5 22:00:16 text: medium and small Views: 0
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 significant temperature rise; be applied to the speed higher. Seal the gap is not too large, otherwise the effect of sealing poor.
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.
