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Sealing technology Home > News > Sealing technology

Some things to note about the oil seal assembly

The effect of the seal is to close the gap of the oil spilling out of the chamber, and prevent dirt such as dust and sand from intruding into the interior of the box. However, if the device is not properly used, it will easily form oil leakage and affect the normal operation of the machine. A forms a burnt bearing, a broken gear, a broken drive shaft or other severe fault.

1. Skeleton self-tightening rubber oil seal device to pay attention to
(1) Before the oil seal of the device, it is necessary to check whether the outer surface of the journal is too rough, there is no mechanical seal and no damage, especially if there is a long mechanical shaft seal along the axial direction. If the outer surface of the journal is too rough, it will simply damage the oil seal or accelerate the wear of the lip 1:3, damaging its sealing function. If the outer surface of the journal is improperly disassembled to form a severe blunt flaw, the oil seal lip and the journal surface will not fit tightly, resulting in oil leakage. In the above two conditions, the mechanical seal of the scar can be welded to the lathe on the regular journal scale after the surfacing, or the new shaft can be replaced. If the journal is only metal burrs or flashing of the shaft head, it can be flattened with a trowel to prevent the oil seal from being damaged when the oil seal is applied.
(2) Check the oil seal lip for breakage, cracking or oil corrosion. If there is any such bad phenomenon, replace the new oil seal.
(3) When the oil seal of the device is sealed, in order to prevent the oil seal lip 121 from being deformed by stretching or scratching, a special device must be selected. If there is no such thing, you can use the following method: firstly on the journal or even the shaft head, roll a layer of hard plastic film (commonly known as cellophane), apply a small amount of oil on the outside, and wrap the oil cover in plastic. The shaft head of the membrane is evenly pressed to gradually push the oil seal to the journal, and then the plastic film is taken out. Note: Do not misalign the direction of the lip, so that it faces the inside of the reservoir, with the trademark and standard side facing the outside. Since the lip 1:3 can only be sealed in one direction, if the oil is packaged in reverse, oil leakage will be formed, and the sealing effect will be weakened or invalid. It is necessary to prevent the oil from being packed or hammered and hammered on the outer surface of the oil seal, otherwise the oil seal is simply damaged.