The Claas Arion 640 is a row-crop tractor produced from 2007 to 2017 as part of the Arion 600 Series. It features a John Deere 6.8L 6-cylinder turbocharged intercooled diesel engine with 155 hp (115.6 kW) output, a 24-speed Hexashift partial power shift transmission with power shuttle, and four-wheel drive. The tractor includes power steering, optional pneumatic trailer brakes, and a cab with air-conditioning. Hydraulics are load sensing with up to 6 valves and a total flow of 29.1 gpm (110.1 lpm). The rear PTO offers 540/1000 rpm speeds with optional additional PTO configurations. Dimensions include a 111 inch (281 cm) wheelbase, 203 inch (515 cm) length, and 118.4 inch (300 cm) cab height. Operating weight is 13800 lbs (6259 kg) with ballasted and max capacity weights available. Tires are 16.9R28 front and 20.8R38 rear.