Gear spindles were first applied to rolling mills in the early 1950's. Over this time the basic design has remained constant except for the material used and the hardening process. And today they are still the most commonly used drive for rolling mills. This is because they are power dense (handle the highest torque for a given Outside Diameter), easy to maintain and economical. New processes have been developed for grinding carburized gear spindles to optimize tooth contact thereby increasing spindle capacity and life by 30-1 00O/o. This process allows for a more compact design (usually one size smaller) along with improved life.
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