Many machine designers look to use standard components with the idea of saving time and money. But quite often a customized solution can do a better job of achieving both. We had a customer using a larger than necessary helical bevel speed reducer because of the requirement of a large output bore. They needed to drive a cooling drum in a plastic extrusion application. In addition to the driving torque they had to feed a water line through the drum shaft journal to circulate water for the cooling process. To accommodate the water line a larger drum shaft was required than would normally be needed to drive the load. In this application low backlash was also required so the gearbox was to be shaft mounted and axed with a shrink disc connection and a torque arm to eliminate box rotation. To f

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