What is the compressed air pressure of CNC machine tools

The compressed air pressure required for CNC machine tools varies depending on the model and processing requirements, but usually follows the following standards:

1. Common air pressure ranges

• General processing needs：
  The compressed air pressure of CNC machine tools is usually set at 0.5-0.6MPa(About 5-6 kilograms of force), which is the optimal working pressure range for most machine tool pneumatic devices (such as tool changing, clamping, chip blowing).
• High-power machining tasks：
  Some machining centers or heavy machine tools may require 0.7-1.0MPa(7-10 kg force) air pressure to meet high torque clamping or strong chip blowing requirements.

2. Key air pressure application scenarios

1. Machine tool gas(Such as tool change, pneumatic clamping):
   • Recommended air pressure ≥0.7MPaAvoid low pressure alarms or insufficient clamping force.
   • If the air pressure is lower than 0.5MPa, problems such as stuck tool change and loose workpiece may be caused.
2. blowing and cleaning：
   • barometric demand ≥0.5MPaEnsure that iron filings, coolant, etc. are effectively blown away from the processing area.

3. Air pressure stability requirements

• fluctuation range：
  Pressure fluctuations should be controlled at ±0.1MPa To prevent equipment misoperation or reduction in processing accuracy.
• gas supply quality：
  Dryers, filters and other equipment are needed to ensure that compressed air is dry (dew point ≤5℃) and oil content ≤0.01mg/m³.

4. Selection and debugging suggestions

1. Air compressor selection：
   • Select the air compressor based on the total air consumption of the machine tool (usually estimated at 0.2-0.5 cubic meters per minute) and pressure requirements, and reserve a margin of 10%-20%.
2. pipeline design：
   • The main pipeline diameter is recommended to be ≥15mm to reduce pressure loss; an air storage tank needs to be added for long-distance air supply (the capacity is configured according to 20%-30% of the air compressor exhaust volume).
3. regular maintenance：
   • Check the barometer and drain valve daily; check the quality of compressed air quarterly.

example：
A machining center equipped with an automatic tool changer can have its compressed air system set to 0.7MPa, and equipped with a 3m³ air storage tank and a freeze dryer to ensure stable air pressure and meet air quality standards.