Is the dry air compressor really oil-free?

Shanghai Granklin Group produces and sells water-lubricated air compressors. The whole machine is made of stainless steel without lubricating oil and uses water as a lubricant.

dry oil free air compressor introduction:

the crankcase of the fully oil-free compressor is of a dry structure, and the large connecting rod, small holes, and the front and rear main bearings of the crankshaft generally use double-port sealed grease-containing ball bearings.

Since no lubricating oil is in contact with the compressed gas source during operation, the discharged gas does not contain oil and gas, so it is welcomed by users.

However, the grease sealed in the bearing will evaporate and oxidize and decompose the grease due to the increase in temperature during long-term operation, and the thickener in the grease will also deteriorate and lose the thickening effect.

Due to the change of grease performance, the use effect drops sharply. If new oil is not added in time, it will directly damage the bearing and even the machine.

Reasons for high temperature shutdown of oil injection screw air compressor:

the reason for the high temperature shutdown of the screw air compressor-the radiator is blocked. The compressor works in a dusty environment for a long time. After a certain period of use, there will be a layer of dirt on the surface of the radiator, and the interior will also form a blockage, which is easy to cause poor heat dissipation.

Fan blade fault. The fan blade is broken or loose, which affects the heat dissipation effect, resulting in high temperature of the equipment. Dirt of oil filter. There is dirt in the oil filter, the amount of oil entering it will be reduced, and there will be a certain resistance. The screw air compressor will not achieve the lubrication effect due to lack of oil.

The air compressor is an oil-free air compressor, and the friction parts are self-lubricating, so do not add lubricating oil. The air compressor must be fixed on a ventilated, stable and solid working surface. In order to reduce noise and vibration, it must have a shock absorber.

The filter medium (foam sponge or felt) in the filter should be cleaned every three months, blowing off the dust on the medium, if necessary, wash with water, dry and reuse. The compressor shall be maintained at least once a quarter. The maintenance contents include thoroughly removing dust and dirt outside the compressor, checking and fastening connecting bolts at all parts of the compressor, checking whether the grounding wire is in good condition, and checking whether the electrical circuit is aging or damaged.