Vulnerable Parts of Screw Air Compressors
Air Filter: Filters dust in the inhaled air to prevent impurities from entering the main unit. It is generally recommended to replace it every 1,500 – 2,000 hours. In harsh environments, the replacement cycle should be shortened.
Oil Filter: Filters out metal particles and impurities in the lubricating oil to protect the bearings and rotors. For new machines, the first replacement is required after running for 500 hours, and then it should be replaced approximately every 2,000 hours.
Oil – Gas Separator (Oil Separation Core): Separates the lubricating oil in the compressed air to ensure the purity of the gas. Its normal service life is about 3,000 hours. When the pressure difference exceeds 0.12 MPa, it should be replaced in time; otherwise, it may lead to oil leakage or motor overload.
Lubricating Oil: The core lubricating medium for oil – injected models. It is prone to oxidation at high temperatures. It is recommended to replace it every 2,000 – 3,000 hours, depending on the oil type and working conditions.
Valve Components such as Solenoid Valves, Thermostatic Valves, and Intake Valves: Control the air flow and temperature. Rubber parts are prone to aging. It is recommended to replace the maintenance kit every 7,000 – 14,000 hours.
Vulnerable Parts of Piston Air Compressors
Piston Rings and Support Rings: Seal the gap between the cylinder and the piston. After wear, the exhaust volume will decrease.
Valve Plates and Valve Assemblies: Control the intake and exhaust. Frequent opening and closing can easily cause breakage or carbon deposition, and they are high – frequency replacement parts.
Big End Bearings and Connecting Rod Bushings: Moving and friction parts. The clearance and lubrication status need to be checked regularly.
Cooler: A decrease in heat dissipation efficiency will affect the performance of the whole machine. The scale in the pipeline needs to be cleaned regularly.
Common Auxiliary Vulnerable Parts
Belts (for belt – driven models): It is recommended to replace them every 5,000 hours to avoid slippage or breakage that may affect the transmission efficiency.
Motor Grease: It should be filled or replaced every 5,000 hours to ensure smooth operation of the bearings.
Oil Coolers and Cooling Fans: Although they are not frequently replaced parts, they are prone to dust accumulation after long – term use, which affects the heat dissipation effect. Regular maintenance is required.
The following are the comparative suggestions based on the mainstream screw-type air compressors:
General Notes: The first maintenance must be performed after the new machine has run for 500 hours, including replacing the lubricating oil and oil filter element, to remove metal debris generated during the break-in period. All replacement procedures should be carried out only after the machine has been shut down and depressurized. Always prioritize original equipment manufacturer (OEM) or certified components to avoid costly failures caused by inferior parts.
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Post time: Apr-09-2026