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Rear Wheel Drive Halfshafts

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The function of a rear-wheel-drive (RWD) halfshaft is to transmit torque from the rear differential to the wheels. As in front-wheel-drive halfshafts, this is accomplished by a pair of CV joints and an interconnecting axle shaft. Unique to RWD halfshafts, the outboard CV joint typically does not need to accommodate steer angle. Therefore the outboard CV joint selection is similar to the inboard joint, where it must only accommodate the suspension travel of the rear wheels.

Nexteer Automotive offers a number of solutions for rear-wheel-drive halfshafts. The best solution depends on several factors including torque requirements, drive system type, running angles, suspension travel, etc. The most common configuration for full-time RWD vehicles is a Rzeppa/cross-groove halfshaft, or a cross-groove/cross-groove halfshaft. These configurations offer exceptionally low rotational lash, high strength and low mass. In vehicles that are full-time FWD with a less demanding part-time RWD system, other joints are commonly used, including tripot and double-offset joints.

In all cases, Nexteer Automotive can configure these rear-wheel-drive halfshafts with plug-in, bolt-on, flange or other interfaces to match the particular vehicle architecture needs.