Shenzhen Alu Rapid Prototype Precision Co., Ltd.

CNC machines can use CFM (cubic feet per minute) for different purposes, primarily compressed air supply (for pneumatics like tool changing or clamping) or dust collection (for chip evacuation). The exact amount varies by machine type, size, and application—there's no universal figure. Below, I'll break it down with typical ranges based on common setups.

Compressed Air Supply

This is for powering pneumatic components. Machines typically require clean, dry air at 90-110 PSI. Compressors should be sized 1.5-2x the machine's needs for reliability.

Dust CollectionThis extracts chips and dust, often via a 4" port. Aim for 4,000 ft/min linear velocity at the hood. Professional systems need both high CFM and static pressure (suction).