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CENTERS - Nemic Industrial Supply
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A dead center does not turn freely. It can support the workpiece at either the rotating or fixed end of the machine. If used in the fixed position, friction will be produced and lubrication will be required to prevent damage. A live center or revolving center is made so that the 60 degree center has its own bearing and is used at the non-driven or tailstock end of a machine. It can allow faster turning speeds without additional lubrication as well as greater clamping pressure. Spring loaded live centers can compensate for center variations without creating damage during the process.