Key features of Chevrolet's full floating rear axle include a strong Calver Bridge construction, self-aligning barrel-shaped roller bearings that minimize friction, and a four pinion differential ...

On trucks with solid rear axles, the bearing rides directly on the axle shaft with very tight tolerances. A total failure of these bearings can lead to the need to replace the axle shaft.

The axle shaft rides on a large roller or ball bearing at the end of the axle housing ... it may be possible to unlock the rear hubs for towing a disabled vehicle on the trail or for flat towing ...