Dana Inc.’s new Spicer Trac-Lok limited-slip differentials (LSD) for medium-duty truck applications autonomously deliver improved vehicle handling with a lightweight and compact design.
The LSDs are designed to offer maximum traction, durability, and performance, Dana says.
“As a world-class leader in drivetrain technology, Dana is focused on product solutions that help minimize costly downtime and keep vehicles on the road,” says Bill Nunnery, senior director of sales and marketing for Dana's global aftermarket business. “Spicer Trac-Lok provides improved traction capability without the driver engaging any switches or mechanisms, thus reducing frequent incidents of poor traction and lessening instability during turns. It also places less stress on the axle shafts, promoting longer part life and preventing unnecessary tire wear.”
By limiting wheel-slip rather than fully locking, Dana says the Spicer Trac-Lok acts as an open differential and freely differentiates in normal operating mode. "During a slip event, it automatically sends approximately three times more torque to the high traction wheel-end and then automatically returns to full differentiation as conditions change, transmitting engine power, enabling stable turns, and boosting driver productivity."
Featuring a lightweight five-pinion pair design to serve a variety of Class-6 and-7 applications, Spicer Trac-Lok has no wiring or pneumatic connections and no special lubricants or friction modifiers are required. It provides lifetime torque bias performance and can be retrofit with existing Spicer S110, S111, S130, and S140 medium-duty drive axles with no wiring, sensors, air hoses, or pneumatic connections. It requires no switches, special lubricants, or friction modifiers to operate.