Dana Tests Hydromechanical Variable Transmission | Construction News


Dana Rexroth Transmission Systems has  announced that several global original-equipment manufacturers (OEMs) have begun pre-production testing on the R3 hydromechanical variable transmission (HVT).

The HVT R3 from Dana Rexroth features a modular design that can be adapted for wheel loaders, motor graders, industrial lift trucks, reach stackers, forestry skidders, and other off-highway equipment.

It is designed for applications with net input power from 268 to 362 hp.

“As off-highway vehicles have evolved into increasingly complex and highly technological systems, expectations have also risen from both OEMs and operators demanding a smoother, quieter ride," said Roland Friedl, head of sales and product management for Dana Rexroth Transmission Systems. "The industry today requires a blend of fuel economy, performance, and driveability.”

Friedl added, “The HVT R3 from Dana Rexroth is a premium solution that delivers this optimized mix of efficiency and driving performance. We can provide support for customers interested in this high-quality solution in China, and around the world.”

Driven by the “Made in China 2025” initiative, Chinese markets are experiencing a rapid shift toward sophisticated, high-tech equipment for construction applications. Aligning with the program’s guiding principles to make manufacturing innovation-driven, Dana Rexroth shares similar ideals focusing on a relentless drive for continuous improvement and technologies that deliver excellence.

A product of the joint venture between Dana Incorporated and Bosch Rexroth, HVTs from Dana Rexroth significantly reduce fuel consumption by decreasing engine speeds throughout the duty cycle and also at idle, when speeds can drop to as low as 600 rpm. Application analysis demonstrates the possibility of further savings without compromising performance through engine downsizing.

Dana Rexroth HVTs enable sensitive, precise vehicle positioning with a stepless drive that offers improved acceleration while maintaining tractive effort. They optimize the operating point of the diesel engine by decoupling engine speed from drive speed, and maintenance costs are reduced by utilizing hydrostatic braking and wear-free directional reversing without clutches.

The HVT system designed by Dana Rexroth helps reduce complexity for equipment manufacturers, since the entire system of gears, clutches, and hydrostatic units is managed by an advanced electronic control unit and optimized for efficiency by a single supplier.