Atlas Copco CR Duplex Cast-Iron Piston Professional Series Air Compressor

Atlas Copco CR Duplex Cast-Iron Piston Air Compressor — Professional Series

The Atlas Copco CR Duplex Cast-Iron Piston Air Compressor (Professional Series) is engineered for facilities that require maximum air delivery, redundancy, and reliability. With two compressor pumps and motors mounted on a single tank, the duplex design ensures uninterrupted air supply for demanding industrial and automotive environments. One pump can run independently during lighter loads, while both can operate simultaneously when air demand peaks—delivering efficiency and flexibility that a single-unit compressor cannot match.

Key Features & Benefits

• Duplex Redundancy: Dual pumps and motors provide a built-in backup. If one side requires maintenance, the other keeps running to minimize downtime.
• High Output Capacity: Two-stage, cast-iron construction produces up to 175 PSI, with combined outputs reaching 70+ CFM, depending on horsepower selection.
• Heavy-Duty Build: Cast-iron, splash-lubricated pumps, balanced crankshafts, and oversized oil reservoirs extend service life and withstand continuous duty.
• Smart Operation: Alternator control automatically rotates which pump runs, balancing wear across both units and extending equipment life.
• Flexible Power Options: Available in 10–20 HP duplex configurations, with electric motors and optional TEFC protection.
• Protected & Safe: Standard features include electronic auto drain, low-oil level switch, aftercooler, belt guard, and ASME safety valves.
• Extended Warranty: Comes with a 1-year comprehensive warranty and an optional 5-year pump warranty when paired with Atlas Copco maintenance kits.

Technical Specifications (Typical Duplex Models)

• Horsepower: 10–20 HP (duplex configuration)
• Max Pressure: 175 PSI
• Flow (CFM): Up to ~70–72 CFM (combined)
• Tank Sizes: Vertical or horizontal options, 120 or 200 gallon receivers
• Controls: Alternator panel, magnetic starter, NEMA4 upgrade available

Why Choose the Duplex Professional Series?

The duplex configuration is built for shops that cannot afford downtime. Whether you run a busy automotive bay, a manufacturing line, or a production facility, this system guarantees consistent air delivery. By alternating pump usage and providing a redundant backup, the CR Duplex minimizes wear, reduces service interruptions, and ensures steady performance under the most demanding conditions.

If your operations depend on high-volume, reliable compressed air with the added security of a dual-compressor system, the Atlas Copco CR Duplex Professional Series is the ultimate solution.