Screw-Piston Booster for Laser Cutting Assist Air Key Points

Fiber laser cutting uses a high-pressure gas jet to blow molten material out of the kerf, and clean, dry air at the right pressure improves edge quality and speed. A 40 bar screw-piston integrated booster is a compact way to generate that assist air on site. This article explains the fit for laser cutting.

Why 40 bar Assist Air

Laser cutting of thin to medium sheet often uses compressed air as the assist gas instead of nitrogen for cost. The pressure influences how cleanly the cut ejects; many setups operate around the 40 bar level, though the exact value follows the material and laser maker's guidance. The booster raises plant air to that pressure and feeds a buffer receiver at the machine. Air quality matters: oil and moisture on the cut edge cause marks and rust, so filtration and drying are part of the picture.

Selection for Laser Duty

Confirm the assist pressure your laser requires and the flow it draws at full cutting duty; size the booster with margin for simultaneous cutting. The screw-piston integrated design combines stages in one package for a compact footprint. Air quality (particulate and moisture) should meet the laser maker's spec; downstream filtration and, where needed, drying are typically specified separately. Cooling and power must suit the shop; verify three-phase supply and service access. Pressure regulation and relief are standard.

Typical Applications

• Fiber laser cutting of mild and stainless steel.
• Air-assist cutting to reduce gas cost.
• Fabrication and job-shop sheet work.
• Prototype and batch cutting cells.

Frequently Asked Questions

Can I use plant air without a booster?

Only if your plant air already reaches the required assist pressure; most shop air is lower, so a booster provides the lift.

Does assist air quality affect cut quality?

Yes. Oil and moisture can mark or corrode edges; match filtration and drying to the laser maker's recommendation.

Maintenance and Precautions

Service filters and any drying media on schedule, and keep cooling clear. Monitor receiver pressure so cuts stay consistent. Calibrate gauges and verify relief; follow the laser maker's air spec to protect the head.

Specification and Duty Considerations

Specifying a unit for laser cutting assist air is easier when the duty is stated clearly. The checklist below helps structure an inquiry and compare quotations on equal terms.

• Pressure: confirm the working pressure required for laser cutting assist air and size the unit with a modest margin above it.
• Flow: estimate demand from the connected load and choose displacement that meets peak use for laser cutting assist air.
• Cooling: select air or water cooling to suit the duty cycle and the climate where the equipment runs.
• Power and site: verify the electrical supply, footprint and service access available at the installation point.
• Media and compatibility: ensure the gas path and seals suit the medium handled in laser cutting assist air.
• Filtration and quality: specify the air or gas class needed and confirm how it is achieved in practice.
• Safety and compliance: confirm relief, isolation and any local code items that apply to this duty.
• Standard versus optional: list which features are included and which are optional when quoting 40 bar booster.

Frequently Asked Questions (continued)

What documentation should the supplier provide for laser cutting assist air?

Ask for the conformity or compliance documents and the basis of any performance or compatibility claim, then verify them against your requirement rather than relying on wording alone.