Crane reducer leakage reasons and management tips. There are many reasons cause crane reducer leakage. Check on the reasons on crane reducer and how to manage crane reducer leakage.
During Crane reducer operation, movement friction produce heat and affected by the ambient temperature, which makes Crane reducer temperature rise, if no air holes or holes clogged, then pressure inside the machine gradually increased, the higher the internal temperature and the greater the pressure difference with outside, lubricating oil leakage from the gap under the action of pressure difference.
During Crane reducer operation, the oil tank is stirring up badly, lubricating oil splashing around in the machine, if excessive amount of fuel, lubricating oil accumulate large numbers in seals and the joint surface, etc., resulting in leakage.
When equipment maintenance, due to the dirt removal of joint surface is not complete, or improper selection sealant, seals installed backwards direction, replacement of seals not timely, etc. can also cause oil leakage.
Crane reducer internal pressure is greater than the atmospheric pressure is one of the main causes of leakage, if trying to make inner and outside of the machine pressure equalization, oil leakage can be prevented. Although Crane reducer has breathable cap, but the holes are too small, easy to be jammed by pulverized coal and oil fouling. And each time refueling must open the inspection hole cover, turn once to increase the likelihood of leakage, so that makes the originally not leak place leakage. Therefore, we make oil cup type breathable cap, and make the original thin check panel to 6 mm thick, the oil cup breathable cap welded on the cover, holes diameter 6mm, to facilitate ventilation, to achieve pressure equalizing, and when fuel oil through the oil cup, do not need to open the inspection hole cover, which reduce the chance of oil leakage.
To make the excess oil that be thrown on the gear bearing not accumulate in the seal, we have to make the extra lubricating oil flow back to the oil pool along a certain direction, which achieves smooth flow. Specific approach is at the lower center of the bearing tile to open a fuel return tank tilted inside the machine, while also open a gap in the end cover, the gap is on the back to the tank, so the excess oil through the gap and oil return tank back to the oil pool.
For Crane reducer static sealing point leakage, new polymer can be used to repair leaking material clogging. If the gear static seal point leak oil during Crane reducer operation, emergency oil stick Putty - 25551 and 90T polymer composite restorative materials of surface engineering technology is available to block, so as to achieve the purpose of eliminating oil leak.
During Crane reducer repair, the technological procedure should be earnestly implemented, oil seal cannot be installed backwards, not to damage oil seal lip, no deformation of the outer edge, the spring cannot come off, the combined surface to be cleaned, sealants applied evenly, and the amount of fuel cannot exceed the oil gauge scale.
Through managing of the Crane reducer static sealing point, it is usually can achieve no leakage, but due to seals aging, poor quality, improper assembly, higher roughness of the shaft surface and related reasons that makes some dynamic seal points still with small leakage, due to poor working environment, coal dust stick to the shaft, it appears greasy and oily, so you need to wipe grease from the shaft after stop running the device.