The Mack MD is a series of medium-duty (Class 6 and 7) trucks built by Mack Trucks. It has a short, low-profile hood and a high-visibility cab. It is designed as straight trucks for local delivery, construction, and other vocational jobs. The MD was introduced in February 2020 entered full production in July 2020.
Design The MD is a short-hood conventional class 6-7 truck. Designed for local use it has a day-cab only. It has two axles with the rear one driven. Total loaded weight can be up to for the MD6 and for the MD7.
Mack doesn't build any medium-duty components and uses a vendor engine, transmission, and axles.
Engine and transmission A Cummins B.67L diesel engine is used. It is a 6.7L turbocharged inline six-cylinder engine. It develops and of torque.
An Allison 2500 RDS and 3000 RDS 6-speed transmission is used. They are fully automatic planetary gear transmission with a lock-up torque converter.
Chassis A ladder frame with beam axles is used. Meritor supplies both the front and driven rear axles. It’s wheelbase is 151-274 in (varies by configuration).
Applications Mack is marketing the MD for local box van, stake/flatbed, dump, and tanker use.
BEV 240 kWh NMC battery, 19.2 kW AC or 80 kW DC charging. 260hp, 1850lb-ft. 19400lb payload. Dual-airbag cab suspension and air ride seat. Led headlights, steel front bumper, galvanized steel cab, 120k psi steel frame, 5 wheelbase options.
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