Dana strengthens drivetrain solutions for construction OEMs

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Dana Holding Corp. has introduced new, integrated drivetrain systems that represent the company’s deepening support for construction OEMs in Russia and the Commonwealth of Independent States. Dana presented its new Spicer TZL Series powershift transmission to the Russian market at the ConExpo Russia at CTT 2011 construction equipment show.

Designed for added performance and durability, the Spicer TZL Series is the first in a line of transmissions scheduled to begin production this year at Dana’s assembly facility in Wuxi, China. The TZL Series is shown as part of a complete 21-tonne front-end loader system that also includes Spicer Hercules Series axles and Spicer Wing and Compact Series driveshaft options.

“The vitality and growth of the construction market in Russia and the CIS has never been more evident,” says Mark Wallace, president of Dana’s Heavy Vehicle Group. “We are eager to work closely with vehicle manufacturers in this region as a Tier 1 supplier with unique capabilities in the integration of value-added drivetrain systems for construction machines.”

Dana will debut a 21-tonne drivetrain system for front-end loaders that features the new Spicer TZL Series powershift transmission, Spicer Hercules 37R and 43R axles, and the Spicer Wing Series Model 7C driveshaft. The Spicer TZL16 transmission has been engineered to supply superior 17-tonne front-end loaders with higher horsepower capability, reduced maintenance and smoother, quieter operation. An enhanced TZL18 version designed for 21-tonne front-end loaders is planned shortly after the launch of the TZL16.

The Spicer TZL is a new four-speed transmission platform that uses proven internal components from the extensive line of Spicer powershift transmissions already available for the off-highway market. It includes high-energy-capacity forward and reverse clutches, adaptive clutch modulation and helical gears for improved shift quality.

Engineered with a rigid, multipiece load-bearing structure including the differential carrier, housing arms, high-energy wet brakes and planetary wheel ends, Spicer Hercules 37R and 43R axles accommodate multiple vehicle platform configurations and are available with Posi-Torq and Hydraloc differential designs that provide excellent torque bias performance in a wide range of ground traction conditions. Using large multiplate clutch discs actuated by gear-separating forces, the Posi-Torq design provides a 45-percent locking capacity, resulting in up to 72-percent torque transfer to the high-traction wheel.

As an operator-controlled differential, the Hydraloc design for 37R and 43R series axles allows for moment-to-moment lock-and-release control, delivering added ground torque bias in severe traction conditions. In its unlocked condition, the Hydraloc differential permits free vehicle steering to facilitate maximum maneuverability. Once locked, a hydraulic piston applies force to a large multiplate wet clutch, resulting in up to 100-percent torque transfer to the high-traction wheel.

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