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Maxitorque®

OUR TRANSMISSIONS LEAD THE WAY

transmissionsEvery Mack® Maxitorque® ES transmission is designed to deliver superior performance. With the industry’s only triple-countershaft design; revolutionary shiftable, multi-speed reverse capabilities; standard, one-piece aluminum case and more PTO mounting options than any other transmission; Mack Maxitorque transmissions are a breed apart.

And since Mack is the only truck manufacturer offering the benefits of integration and single-source accountability for the engine, transmission and chassis, you not only get the industry’s best-built transmission, you get peace of mind knowing all Mack transmissions are engineered to work in concert with the engine to create powerful, reliable powertrains.

UNMATCHED DESIGN. SUPERIOR PERFORMANCE.

Mack offers the only transmission with a unique triple-countershaft design that disperses load between three shafts instead of two. Because there are three countershafts, each countershaft carries 33 percent of the load rather than 50 percent (17 percent less load per countershaft). This design reduces gear face friction for improved fuel economy. With only one gear immersed in oil rather than two as in competitive units, the result is more efficient operation, as the parasitic loss in churning oil is cut in half. In turn, this passes more horsepower through the transmission rather than allowing it to be lost.

MOVING FORWARD EVEN IN REVERSE
Mack offers an exclusive shiftable, multi-speed reverse functionality that allows for precision off-road driving. Lo and lo-lo ratios allow for exceptional maneuvering and slow high-power speed control.

SMOOTH OPERATOR
transmissionsThe Easy Shift, light-touch design and shift rail profile of our transmissions allow for smooth transitions through the neutral gate with each shift. Sliding clutches permit quicker, smoother shifts while increasing durability. A tighter ergonomic shift pattern is easy on drivers for improved comfort.

THE POWER TO HAUL THE HEAVIEST LOADS
Mack Maxitorque transmissions provide more PTO mounting options than any other transmission. And with ratings up to 2,100 lb.-ft., the Mack family of transmissions delivers the right torque for instantaneous pulling power. Our T300 series confirms Mack as the undisputed vocational leader where demanding tasks require specific needs. With 19 different models and 6 to 18 speeds, there’s a Maxitorque ES transmission to fit any application.

COOL UNDER PRESSURE
Mack is the only manufacturer to provide standard, a one-piece aluminum case that’s lightweight and stays cool. The aluminum case of the Mack Maxitorque transmissions provides a “built-in-cooler.” Typical iron-cased transmissions do not exchange heat as efficiently.

Download the Mack Powertrain brochure