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Metal does not slide well against other metal. A layer of grease or oil is added to separate the layers of metal.

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Machines are frequently oiled or greased to reduce friction between moving parts, which helps prevent wear and tear on the machine's components. This lubrication also helps dissipate heat that can build up during operation, prolonging the machine's lifespan and ensuring optimal performance.

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10mo ago
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Q: Why machines are frequently oiled or greased?
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