Australian Automotive Glossary

Axle

Shaft on which a wheel, bearing or gear is mounted. A rotating metal shaft connected to the wheels on either side of the vehicle....
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Axle Casing

Outer casing of the axle that houses the crown wheel, pinion and half shafts....
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Axle Ratio

The ratio between the rotational speed (RPM) of the drive shaft and that of the driven wheel. Gear reduction in final drive is determined by dividing the number of teeth on the ring gear by the number of teeth on the pinion gear....
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