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Why did Caterpillar redesign the entire undercarriage system? Isn changing a component or two enough?

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Why did Caterpillar redesign the entire undercarriage system? Isn changing a component or two enough?

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By redesigning the entire system and not just a component or two, Caterpillar was able to offer substantial benefits to customers, including eliminating the need for pin and bushing turns. SystemOne wears as a system because components are matched to wear evenly at a controlled and predictable rate. Only addressing one part of a whole system wouldn’t have equaled the total improvement in life and cost per hour for equipment owners. Here’s why, offering a harder bushing, for example, without changing the sprocket segments and rollers would result in mismatched wear life of mating components. In this case seal life would still be an issue and a harder material of one component would then cause more wear to other components.

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