The role of the seal is to close the gap in the chamber fluid spill and prevent dirt, sand and other dirt from invading the chamber. However, improper installation or use can easily cause oil leakage and affect the normal operation of the machine. 75-A Causes the bearings to burn, gears to break, drive shafts to be broken, or other serious problems.
1. Installation precautions for skeleton self-tightening rubber seals
(1) Before installing the oil seal, check whether the surface of the journal is too rough and has any flaws, especially if there is a long flaw along the axial direction. If the journal surface is too rough, it can easily damage the oil seal or accelerate the wear of the lip 1:3, destroying its sealing performance. If the surface of the journal is caused by improper disassembly and assembly, it will cause serious blunt stroke scars, which will cause the seal lip and the journal surface to lax, causing leakage of oil. In both of the above cases, the surfacing area can be re-launched to the lathe or the new shaft after surfacing. If the journal has only metal burrs or flashes on the shaft, etc., it can be smoothed with a trowel to prevent the oil seal from being damaged when the oil seal is installed.
(2) Inspect the lip of the oil seal for cracks, cracks, or oleochemical corrosion. If any of these problems occur, replace the new oil seal.
(3) When installing the skeleton oil seal, a special installation tool must be used to prevent the oil seal lip 121 from being deformed or scratched. Without this tool, the following method can be used to install: First, in the journal or even the shaft head, roll a layer of transparent hard plastic film (commonly known as cellophane), put a little oil on the surface, the oil seal into the wrapped plastic The shaft head of the film presses the oil seal evenly to the journal, and then the plastic film is pulled out. Note: Do not mis-align the lip, but place it facing the inside of the oil reservoir. The side with the trademark and specification faces outward. Because the lip 1:3 can only be sealed in one direction, if the oil is encapsulated in the opposite direction, the oil will inevitably leak and the sealing effect will weaken or fail. To avoid the use of oil seals or hammer hammers and other tools on the surface of the oil seal, otherwise it is easy to damage the seal.
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