How to prevent oil leakage in KA67 hollow shaft umbrella gear reducer

For the oil leakage problem of KA67 hollow shaft bevel gear reducer, the following measures can be taken to prevent it:

Improving the breathable cap and inspection hole cover plate: The main cause of oil leakage is that the pressure inside the reducer is greater than the external atmospheric pressure. If we try to balance the internal and external pressures, we can prevent oil leakage. For this purpose, an oil cup exhaust cap can be made by changing the original thin inspection hole cover plate to 6mm thick, welding the oil cup exhaust cap onto the cover plate, and creating a ventilation hole with a diameter of 6mm for easy exhaust and balanced pressure. Oil can be injected from the oil cup. Do not open the inspection hole cover to avoid oil leakage.

Maintain appropriate oil level: The gearbox of a crane is usually lubricated by immersing the large gear in an oil pool. The depth of gear immersion in oil should not exceed one tooth height, otherwise it will accelerate leakage due to severe oil agitation and rising oil temperature. In addition, mechanical efficiency may be reduced due to increased oil resistance. Therefore, the amount of oil must be appropriate, not adding too little, but never adding too much.

Improve the sealing ring of the shaft head: Install an oil seal ring on the shaft head, mill a circular oil return groove on the dividing surface of the machine base, and install a semi-circular ring on the upper part of the shaft head on the inner wall of the upper cover, etc., to ensure that the oil splashed on the machine cover flows smoothly into the oil pool of the machine base.

Leak sealing: mainly measures are taken at the sealing points of the split surface and shaft head, selecting appropriate sealing materials and components to block the gaps.

Change lubrication material: The reducer adopts thin oil lubrication, which has strong permeability and is prone to oil leakage. If the thin oil lubrication is changed to solid lubricating material lubrication, the lubricating oil inside the machine is less likely to overflow, which can effectively prevent oil leakage.

The above measures can effectively prevent the oil leakage problem of KA67 hollow shaft bevel gear reducer. At the same time, it is also necessary to pay attention to the working environment and conditions of the gearbox, strengthen the training and management of equipment operators, and improve their operation and maintenance skills. If encountering oil leakage problems, professional technicians or manufacturers should be contacted in a timely manner for repair and maintenance.