Dana Inc. has introduced the new Spicer Trac-Lok limited-slip differentials (LSD) for medium-duty truck applications, which the company says autonomously delivers improved vehicle handling.
“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,” said Bill Nunnery, senior director of sales and marketing, global aftermarket for Dana Inc.
By limiting wheel-slip rather than fully locking, Spicer Trac-Lok acts as an open differential and freely differentiates in normal operating mode. During a slip event, Dana says 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.
Featuring a lightweight five-pinion pair design to serve a variety of Class 6 and 7 applications, Dana says Spicer Trac-Lok has no wiring or pneumatic connections and no special lubricants or friction modifiers required. It can be retrofitted with existing Spicer S110, S111, S130 and S140 medium-duty drive axles with no wiring, sensors, air hoses, or pneumatic connections. It does not require switches, special lubricants or friction modifiers to operate.
