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This early example of the Murad Antarctica lathe has six spindle speeds from 39 to 870 rpm. This was later increased to 12 by usual expedient of using a double-size pulley on the motor shaft together with matching larger pulleys on the countershaft; each model had its own speed range, arranged (on later models) as follows: 39 to 1300 rpm for the Alpha, 39 to 2000 rpm for the Beta and a very useful 39 to 2520 rpm for the Gamma.
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