The oil seal is a critical sealing component of a screw air compressor, typically installed at the rotating shaft of the airend. It prevents lubricating oil from leaking out while also keeping dust and contaminants from entering the equipment.
Main Functions
- Prevents lubricating oil from leaking at the rotating shaft.
- Maintains the required oil level inside the airend and gearbox.
- Keeps dust, moisture, and contaminants from entering the compressor unit.
- Protects bearings, gears, shafts, and other moving parts.
- Helps the compressor run stably, reducing overheating and oil loss.
- Reduces the risk of airend damage and costly repairs.
Signs of a Worn or Damaged Oil Seal
- Oil leaking at the shaft end or coupling area.
- Compressor oil level dropping unusually fast.
- Oil residue on the compressor body, pulley, coupling, or machine room floor.
- Unusual noise, vibration, or rising operating temperature.
- Seal hardened, cracked, deformed, or worn at the sealing edge.
- Dust build-up mixed with oil around the airend area.