Dead centres

Dead centres

1 and #0 Morse arbours have a 60° point and are used to locate and hold work "between centers" on the lathe. The #1 Morse arbour rotates with the headstock, but because the tailstock spindle does not rotate, the rear #0 Morse arbour is called a "dead" center. This needs to be kept lubricated because it creates friction with the moving part it is locating. Most machinists eventually replace this with a "live" centre that turns on a ball bearing.

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Part of Speech: noun
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Industry/Domain: Industrial machinery
Category: Lathe
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