Atlas Copco ZR350 VSD Oil Free Rotary Screw Air Compressor Class 0 Industrial

The Atlas Copco genuine ZR series variable speed drive (VSD) rotary screw compressor delivers certified 100% oil-free compressed air for demanding, high-capacity industrial production facilities. Certified compliant with ISO 8573-1 Class 0, the water-cooled ZR platform completely eliminates oil contamination risks in precision electronics fabrication, chemical processing, and automotive coating plants.

Operating within the heavy-duty ZR 200–355 VSD family, this water-cooled package matches rotational speed to actual plant demand, reducing electrical energy consumption by up to 35% compared to fixed-speed units.

• Two-stage dry screw configuration: Compression is divided between low-pressure and high-pressure stages, splitting the overall pressure ratio to optimize thermodynamic efficiency.
• Precision-machined asymmetrical rotors: Both stages feature Atlas Copco proprietary thermal barrier coating to resist corrosion and maintain tight running clearances under elevated discharge temperatures.
• External synchronizing timing gears: Lubricated by dedicated oil circuits, these gears ensure the male and female rotors never make physical contact inside the compression chambers.
• Floating carbon ring seals: High-efficiency seals backed by atmospheric air purge gaps form an impenetrable mechanical barrier, preventing gearbox oil from migrating into the compressed air stream.

The integrated water-cooling circuit utilizes heavy-duty shell-and-tube heat exchangers with corrosion-resistant tubes, efficiently removing heat of compression across the intercooler, aftercooler, and oil cooler. This design supports stable discharge temperatures and reliable continuous operation in high-capacity industrial environments.

Equipped with the Elektronikon graphic controller and an integrated variable frequency inverter, the unit maintains tight system pressure bands while soft-starting the main drive motor without starting current spikes. Variable speed control matches compressor output to real-time plant demand for maximum energy efficiency.

Supplied as a fully enclosed heavy-duty package, each compressor is prepared for international logistics with lifting brackets, export-grade packaging, and moisture-barrier protection for ocean freight.

As one of the most professional suppliers of Atlas Copco equipment from China, we have focused on 100% genuine Atlas Copco products for more than 19 years. Our professional engineers provide 24-hour technical support and on-site service. We operate a warehouse of over 4,000 square meters with 80% of parts in stock for quick delivery. First-hand sources, competitive pricing, and a dedicated service team make us a trusted Atlas Copco supplier.