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From the early days of mechanical engineering to todayโs heavy-duty commercial trucks, the U-joint has been the link holding everything together. Its genius lies in its simplicity: a mechanical connection that allows power to flow smoothly between rotating shafts at different angles, maintaining motion even when alignment is imperfect or constantly changing.

The clutch and transmission are two of the most critical components in a heavy-duty truckโs driveline. Together, they manage the delivery of power from the engine to the driveshaft, converting combustion energy into usable torque that moves tens of thousands of pounds down the highway. Understanding how these systems interactโand how their design changes between…

For heavy-duty trucks and off-highway vehicles, the drivetrain is the backbone of performance. At the heart of that drivetrain is the transaxleโa critical component that combines the functions of a transmission and drive axle into one integrated unit. In demanding applications such as construction, mining, and long-haul transport, a transaxle must deliver maximum torque, handle…