Granklin Air Compressor Advertising Copy - Welcome to Join and Order

How do you see whether the air compressor has oil or no oil?

2026-04-15Views:

Judging whether the air compressor has oil or no oil can be comprehensively identified by the following methods:

1. appearance and structure

  1. oil level gauge/oil filler
    • oil air compressor: Oil level gauge, oil filler or oil filter are clearly visible (as shown below).
    • Oil-free air compressor: No oil level gauge, more compact design (relying on self-lubricating materials or gas bearings).
  2. Oil-water separator
    • oil air compressor: Usually equipped with oil-water separator, used to filter the lubricating oil in compressed air.
    • Oil-free air compressor: No oil-water separator is needed, compressed air is directly output.

2. working principle identification

  • nameplate/instruction: Check the equipment nameplate or manual, clearly marked "Oil-Free" or "oil-free lubrication" is oil-free air compressor.
  • Technical parameters: Oil-free air compressors usually emphasize "Class 0" certification (ISO 8573-1 oil content <0.01 mg/m & sup3;).

3. Application Scenarios

  • oil air compressor: Common in general industrial scenarios (e. g. pneumatic tools, purging).
  • Oil-free air compressor: It is mostly used in industries with high cleanliness requirements (such as medical, pharmaceutical, electronics).

4. operating characteristics

  • traces of lubricating oil: After long-term use of the oil air compressor, there may be traces of lubricating oil leakage around.
  • Noise and vibration oil-free air compressors usually have less noise and vibration because they do not need an oil pump.

5. Price and Maintenance

  • price: Oil-free air compressors are usually 30%-50% more expensive than oil-free air compressors of the same specification due to complex technology.
  • Maintenance oil-free air compressors require regular replacement of lubricating oil and filter elements; maintenance costs for oil-free air compressors are concentrated on self-lubricating materials or desiccants.

Summary: By checking the oil level gauge, oil-water separator, equipment identification and application scenarios, the type of air compressor can be quickly judged. If depth confirmation is required, refer to the equipment manual or contact the manufacturer to provide technical parameters.

More Recommendations

  • 2026-04-09

    Oil-free air compressor suitable for industry

    Oil-free air compressors are sold well in China, that is, granklin water-lubricated oil-free air compressors, what kind of enterprises need oil-free air compressors? Food, drinks, medical, laboratory, water treatment, biopharmaceutical, environmental protection, printing, subway and other industry scenarios need to use oil-free air compressors.

    View details
  • 2026-04-10

    How air compressors separate water

    There are several methods for separating water from air compressors: manual drainage: in some relatively simple air compressors, preliminary water removal operation can be carried out at the exhaust port manually. The specific method is to open the air compressor exhaust port and let the water

    View details
  • 2026-04-13

    What is the industrial standard pressure?

    The industrial standard air pressure is usually measured on a standard atmospheric pressure basis. The standard atmospheric pressure is specified in the resolution statement of the 10th International Congress of Metrology in 1954, and its value is 101.325kPa. For a more intuitive comparison with other barometric units, we can

    View details
  • 2026-04-14

    Why air compressor with permanent magnet motor

    The reason why the air compressor uses a permanent magnet motor can be understood mainly from the following aspects: First, the permanent magnet motor has the characteristics of high efficiency and energy saving. Compared with the traditional asynchronous motor, the application of permanent magnet motor in air compressor can significantly reduce energy consumption. This is because the permanent magnet electric

    View details
  • 2026-04-09

    Inspection contents of oil injection screw air compressor

    1. Oil level in oil and gas separator. If the oil level of the air compressor is too low, add lubricating oil. Stop the machine when refueling. Loosen the refueling plug to refuel after depressing the pressure. 2. The integrity of the hose, whether there is leakage. 3. All electrical connectors shall be stable and in good condition.

    View details
  • 2026-04-15

    How can two air compressors be connected in parallel to use air storage tanks together?

    The technical scheme and implementation points of two air compressors using air storage tanks in parallel In the industrial field, the parallel air supply of multiple air compressors can significantly improve the air supply capacity and stability of the system. The following from the technical principles, implementation steps and precautions three aspects, analysis of the two

    View details
  • 2026-04-13

    What medical synthetic air hospitals do

    The expression "medical synthetic air" may be a bit vague, because usually in a hospital environment, we do not directly "synthesize" air. But it is understandable that this question is asking about the application of special gases in hospitals, or after special.

    View details
  • 2026-04-15

    Quality standard of compressed air for pharmaceutical use

    Compressed air quality standards for pharmaceutical use shall meet international standards, pharmacopoeia specifications and industry best practices at the same time. The key control parameters and implementation requirements are as follows: 1. core standards are based on ISO 8573-1:2010 (Compressed Air Quality Grade) Solid Particles: Grade 1: Particles

    View details
  • 2026-04-10

    Screw air compressor frequency conversion and power frequency which is better

    The frequency conversion and power frequency selection of the screw air compressor is actually a bit like choosing a household item that is both practical and meets personal needs. Both have their own advantages, there is no absolute "good" or "bad", the key is also

    View details
  • 2026-04-10

    Do 2 cubic air compressor storage tanks need to be registered

    Yes, 2 cubic meters of air compressor tanks need to be registered. As a special pressure vessel, air compressor storage tank must be registered in accordance with relevant requirements to ensure compliance with safety production requirements and relevant regulations. According to the Pressure Vessel Safety Technology

    View details