Atlas Copco XATS 400 JD8 is a portable air compressor designed for construction, mining, and industrial compressed air applications. It is part of Atlas Copco's XATS series and is powered by a John Deere JD8 diesel engine. The unit is used to supply compressed air for pneumatic tools, drilling, blasting, and general site operations. The XATS 400 JD8 is built for mobile deployment, with a towable chassis and enclosure for field use. Typical features include variable pressure settings, fuel-efficient operation, and service access for maintenance. It is classified as an air compressor for heavy-duty jobsite and industrial use.