@air
2025-04-01

Does the air compressor need to be maintained with oil

Whether an air compressor requires oil maintenance mainly depends on its type and working principle. The following are the oil use and maintenance requirements for different air compressor types:

1. Oil injection screw air compressor: must be maintained with oil

  1. oil action
    Used for cooling, lubrication, rust prevention and enhanced sealing, and directly participates in the compression process.
  2. maintenance requirements
    • replacement cycle
      • Mineral oil: 3-4 months
      • Semi-synthetic oil: 6-8 months
      • Fully synthetic oil: 10-11 months
        (If the environment is harsh, replace it in advance)
    • operational flow
      1. Thoroughly drain old oil after shutdown to avoid mixed pollution.
      2. Replace the oil filter, air filter, and oil-gas separator filter elements.
      3. Add new oil to the standard oil level (usually above and below the line in the oil level).
    • precautions
      • Oil of the specification specified by the manufacturer must be used.
      • Too high the oil level will cause oil injection, while too low will cause insufficient lubrication.

2. Oil-free air compressor: no need for oil lubrication

  1. lubrication method
    Use high-temperature resistant materials such as Teflon coating and molybdenum disulfide, or completely isolate and lubricate parts.
  2. Maintenance focus
    • Cleaning and sealing
      • Clean the filter and radiator weekly to prevent dust clogging.
      • Inspect seals monthly to avoid leaks.
    • storage environment
      • Keep dry and ventilated to avoid moisture corroding equipment.

3. Micro-oil screw air compressor: Very small amount, still needs maintenance

  1. oil action
    It is only used for lubrication of key components, and the amount is less than 10% of that of traditional equipment.
  2. Maintenance characteristics
    • long-cycle maintenance
      • The oil change cycle is extended to 2-3 times that of traditional equipment.
    • monitoring key
      • Regularly check the efficiency of the oil and gas separator to ensure that the oil content is less than 0.01mg/m³.

4. General maintenance recommendations

  1. Follow manufacturer’s manual
    All operations are subject to the equipment instructions to avoid erroneous maintenance.
  2. environmental factors
    • High temperature, high humidity, and dusty environments need to shorten the maintenance cycle.
  3. abnormality monitoring
    • In case of noise, vibration or leakage, stop the machine immediately for inspection.

summary

Air compressor type Oil demand Maintenance core applicable scenarios
Oil injection screw air compressor necessary Regularly change oil and triple filter replacement General industrial gas supply
oil free compressor without Clean, sealed and stored in a dry manner Clean scenes for food, medicine, electronics, etc.
Micro-oil screw air compressor very small amount Long-term monitoring of oil and gas separation efficiency Balancing costs with cleanliness needs

prompt: Refer to the equipment manual or consult the manufacturer for specific maintenance cycles and oil types.

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