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lathe difficulty

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  • lathe difficulty

    I have acquired a 1970's Hardinge Chucking lathe which is a knock-off. The variable speed features are inoperative. My electrician has looked over the main switch case and the schematic inside the door and cannot find a 2 amp fuse which is supposed to be in the circuit. I have cleaned the contacts on the reostats but still no operation. Anybody out there have any ideas? The previous owner says the variable speed motor used to work, then would work only if the lead screw was given a bit of help by hand.
    Thanks,
    caliper1

  • #2
    Maybe a bad start capacitor on the motor?

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    • #3
      Is this a DC motor?
      Hard to help with so little details?
      Any nameplate or model No's?
      Also sounds like the motor was undersized?
      Max.

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      • #4
        It is a 9.5 volt DC motor.Unfortunately there is no serial no. for lathe. It's an Asian clone as other Hardinge parts fit but the fasteners are metric. I'll dig into the box containing the speed change motor to see about the capacitor (if there is one).

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        • #5
          Never saw a DC motor with a capacitor! Must be something new? Bob.

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