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Drive Axles: Description

NOTE: DRIVE AXLE USAGE - The Rockwell 12" ring gear drive axle is used on some Chevrolet P30 and GMC P3500 models.

The Rockwell drive axle uses a heavy duty hypoid drive pinion and ring gear. The differential and gear assembly is mounted on tapered roller bearings.

The straddle-mounted pinion has 2 tapered roller bearings in front of the pinion teeth.

The 3rd bearing is behind the pinion teeth. The preload on the differential side bearings is set by adjusting nuts on which bearing cups rest. The differential has a 2-piece case and 4 differential pinion gears.

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