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Air compressor rated pressure and working pressure in general

2026-04-15Views:

air compressor rated pressure and working pressure it is a key parameter for selection and use, and its range varies by device type and application scenario. Here is the detailed description:

1. pressure rating

  1. definition when the air compressor is running continuously at rated speed and rated conditions maximum exhaust pressure.
  2. Common range:
    • piston air compressor: 0.7-1.5 MPa (suitable for small scenes).
    • Screw air compressor: 0.7-3.5 MPa (mainstream choice for medium and large enterprises).
    • Centrifugal air compressor: 1.0-5.0 MPa (suitable for large flow and high pressure requirements).
  3. Example:
    • the pressure of spraying equipment shall be above 2.0 MPa.
    • Mine rock drill 2.5-3.0 MPa.

2. working pressure

  1. definition: The actual operation of the air compressor output pressure, Usually lower than the rated pressure to ensure stability.
  2. Common range:
    • general industry0.5-0.8 MPa (pneumatic tools, purging, etc.).
    • High Demand Scenarios:
      • laser cutting: 1.0-1.5 MPa.
      • Pharmaceutical packaging: 0.6-0.8 MPa (need to cooperate with precision pressure regulating valve).
  3. Safety recommendations: The long-term working pressure should not exceed 80% of the rated pressure to extend the life of the equipment.

3. selection and use recommendations

  1. matching requirements:
    • manufacturing: Screw type (rated pressure 1.0-2.5 MPa) is preferred.
    • Laboratory: Select silent oil-free air compressor (rated pressure 0.7-1.0 MPa).
  2. Pressure matching:
    • example: If the equipment needs 0.6 MPa, an air compressor with a rated pressure of 0.7-0.8 MPa can be selected.
  3. Energy saving considerations:
    • the variable frequency air compressor can automatically adjust the pressure to avoid long-term high-pressure operation.

Summary: The rated pressure of the air compressor is usually 0.7-5.0 MPa, and the working pressure should be set according to the demand and lower than the rated value. The selection should be combined with industry pressure requirements, equipment types and energy-saving requirements to ensure pressure matching and stable operation.

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