Eaton Cummins Automated Transmission Technologies recently released specifications for its new Endurant XD series and revealed it will include Endurant XD and Endurant XD Pro models.
Endurant XD series transmissions are designed for on-highway applications with high gross combined weight ratings, such as double and triple trailer trucks, and severe-duty on/off highway applications like dump and logging trucks.
Production of the Endurant XD series is set to begin in the third quarter this year. Truck manufacturers are expected to announce availability of the Endurant XD series at a later date.
The Endurant XD series features a twin-countershaft design with helical gearing and large bearings optimized for higher engine torque. According to Eaton, a new 18D ratio set with 20.5:1 overall ratio with small, even steps ensures smooth shifts and excellent performance in all driving conditions. Endurant XDs are packaged in a contained design with internal wiring and sensors to minimize exposure and corrosion for improved reliability. Overall, its design is 225 lb. lighter than comparable UltraShift PLUS models.
A new Power Takeoff (PTO) system delivers power to an eight-bolt bottom mount and four-bolt rear mount that can operate independently of the transmission gear. The 4-bolt rear mount features an external pressurized lube port and a large center distance, making it an ideal alternative when there’s no room for a bottom mount PTO. Total combined PTO capacity is 160 horsepower or 610 lb.-ft. of torque.
Trucks operating below 110,000 lb. don’t require a transmission cooler, reducing the risk of cooler leaks. Maintenance costs are minimized thanks to long service intervals—up to 500,000 miles depending on vehicle application—and help keep the truck on the road and making money.
New for the Endurant XD series are Performance Goals, which combine transmission shift points and clutch calibrations with unique software. This allows operators to easily tailor transmission performance to the demands of the job.
Endurant XD is rated for engines with a maximum torque rating of 1,650 to 1,850 lb.-ft. and is designed for on-highway applications up to 166,000 pounds gross combined weight rating (GCWR).
“Endurant XD delivers a pleasant driving experience with improved skip shift ability and smoother shifts compared to previous 13- and 18-speed automated transmissions,” said Ken Rocker, Endurant XD series product manager at Eaton Cummins Automated Transmission Technologies.
Endurant XD Pro
Endurant XD Pro adds even more capability for severe service applications through its unlimited GCWR, PTO functionality, and the longest maintenance intervals in its class. For long reversing distances and deep axle ratios, the Endurant XD Pro can be configured with up to six reverse gears. Endurant XD Pro can be paired with the most powerful engines, including the Cummins X15 series, with torque ratings from 1,650 to 2,050 lb.-ft.
Endurant XD Pro utilizes Eaton's Extreme Duty clutches, which feature components designed for increased durability, improved noise and vibration, in addition to higher thermal capacity for enhanced low-speed maneuverability.
Software features to the Endurant XD Pro include Rock Free, which helps avoid getting stuck in sand, mud, or snow by using the accelerator to rock the vehicle free, and the Off-highway Performance Goal, which is an optimized calibration for operation on natural rolling terrain and soft soil.
“Endurant XD Pro has the right mix of hardware and intelligence to give drivers more confidence in the most challenging applications such as construction, heavy haul, towing and recovery, and logging,” Rocker said. “No other automated transmission can match its combination of capability, efficiency, and maintenance requirements.”