The right machine is not chosen on flow alone. What you produce sets an air class, and that class sets a technology. Eight industries, eight answers.
The air class targeted and the first machine we install, industry by industry. Every row leads to the card that details it.
| Industry | Air quality targeted | What we install first |
|---|---|---|
| Pharmaceutical and healthcare | Class 1 | Oil-free scrollOil-free compressor |
| Food and beverage | Class 1 | PM VSD screwLubricated compressor |
| Automotive and plastics | Class 2 | Two-stage screwLubricated compressor |
| Electronics and laser cutting | Class 0 | Oil-free scrollOil-free compressor |
| Chemicals | Class 2 | Fixed-speed screwLubricated compressor |
| Energy and water treatment | Class 2 | Two-stage screwLubricated compressor |
| Textile | Class 2 | PM VSD screwLubricated compressor |
| Site work and maintenance | Classes 4 to 5 | Portable dieselLubricated compressor |
The air touches the product or the primary packaging, and every batch is documented.
Product contact, frequent wash-downs, hygiene audits to pass without argument.
High flow, a load that follows the lines, and downtime that costs a fortune.
Electronics: oil-free, dry air. Laser cutting: clean air at high pressure.
An aggressive atmosphere, sometimes a gas rather than air, and pressures that climb.
Continuous base load, large volumes, pressure often low but never interrupted.
Fibre dust, an extended network, machines running two or three shifts.
Pneumatic tools, blowing, mobile jobs. No plant room, no network.
When a specification says Class 0, CEZIUM quotes an oil-free machine, as the trade understands it: scroll compressor up to 5 m³/min, rotary tooth compressor from 2.3 to 8.6 m³/min, dry screw or centrifugal beyond that. We also point out the alternative few suppliers mention: a lubricated screw followed by a treatment chain delivers oil-free air for a markedly lower purchase price, without carrying the Class 0 label.
In this trade, Class 0 means an oil-free machine. That is the convention, and it is what a specification expects when it writes Class 0, so that is what we quote. Technically, ISO 8573-1 classifies air at the point of use rather than the compressor, so a lubricated screw followed by multi-stage filtration and an adsorption dryer delivers oil-free air measured on acceptance. That is a genuine alternative, cheaper to buy and far better at heat recovery, but it does not give you a Class 0 certified machine. Both are worth knowing; your own documents decide.
The five questions that come back whenever a specification lands on the desk.
Flow and pressure are enough to start. If you do not know them yet, the diagnostic reconstructs them from how you use the air.