ZE/ZA (VSD): OIL-FREE ROTARY SCREW COMPRESSORS

Atlas Copco’s low pressure ZE/ZA Oil Free Rotary Screw compressors fulfill this demand by offering a constant air flow at minimal energy costs. Integrated Variable Speed Drive (VSD) variants offer up to 35% extra energy savings by automatically tuning compressor flow to the precise air demand.

Customer benefits : 

• Highest reliability – ZE/ZA compressors stand for durability and reliability. They incorporate Atlas Copco’s proven screw technology, stainless steel coolers, AGMA A4/DIN 5 gears and state-of-the art electrical drive systems, all of which contribute to overall high reliability. ZE/ZA compressors are built using long-standing internal engineering practices, and are manufactured and tested according ISO 9001.
• Certified 100% oil-free – ZE/ZA compressors provide you with 100% pure, clean air that complies with ISO 8573-1 CLASS 0 (2010) certification. CLASS 0 means zero risk of contamination; zero risk of damaged or unsafe products; zero risk of losses from operational downtime; and zero risk of damaging your company’s hard-won professional reputation. In 2006 Atlas Copco was the first manufacturer in the world to receive such certification on an oil-free compressor.
• Reduced energy costs – With an air circuit designed to avoid and reduce pressure drops, the ZE/ZA is built to save energy. Features like VSD drive, a state-of-the-art oil-free compression element, and energy recovery greatly enhance energy savings.
• Easy installation – The compact design eliminates the need for extras and reduces installation to an absolute minimum, saving you time and money. Built for easy integration in your existing compressed air network, ZE/ZA compressors are up and running in no time.

OIL-LUBRICATED, CAST-IRON PISTON COMPRESSORS

The Automan AT oil-lubricated, cast-iron piston compressor has been designed for maximum productivity. Its high-quality components guarantee a long lifetime, making the AT a cost-efficient solution.

LT KE 25-125: WATER-COOLED PISTON COMPRESSORS FOR STARTING AIR, 18.5-90 KW / 25-125 HP

Solid reliability – Forced air flow around the crankcase reduces condensate to zero and extends bearing life. The LT KE can be cooled with sea water or fresh water. The LT KE has no electronic sensors, but pressure and temperature gauges for an easy, fast and reliable read-out.

Low running costs – Operational costs are limited and due to the use of highly durable components the compressors have a long lifetime and long maintenance intervals. Synthetic oil is used as standard.

Space saving – LT KE compressors are characterized by a small footprint and there is no need for a canopy. Supplied with a baseplate and delivered as plug-and-play unit, they allow for quick installation.


The harsh marine environment demands the most durable and most reliable products: you do not want critical equipment to break down at sea. That is why you need the Atlas Copco range of LT KE starting air compressors. Built to last, they will give you the performance and reliability you need.

The LT KE starting air compressors have capacities up to 125 hp. They withstand ambient temperatures up to 60°C, which makes them ideal for installing in an engine room.

Technical Specifications
Capacity FAD (m³/h, cfm)	55 – 398 m³/h
Installed motor power	15 – 90 kW
Working pressure	30 bar(e)
Capacity	60-430 m³/h