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Help With A Hammond #4 Voltage

Discussion in 'ELECTRICAL ISSUES - POWER YOUR MACHINES & SHOP' started by Lordbeezer, Dec 8, 2016.

  1. Lordbeezer

    Lordbeezer United States Active Member Active Member

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    Ken..was thinking something was done in the past..no dust..no grease from fittings at bearings..has sealed bearings.dont see a way for grease to lube anything.the varnish on windings looked really good.even though motor is sealed didn't see how it could be so clean for age of machine..going to get back on grinder after finishing up my 10k gap bed lathe..thanks for your reply
     
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  2. 4gsr

    4gsr Global Moderator Staff Member H-M Supporter-Premium

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    You're far much better with the sealed bearings in the long run. You don't have to worry about contaminated grease getting to the bearings using the existing grease zerks. Even though the class of bearing may not be the same from the OEM, you'll never notice it in operation. Ken
     
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  3. Lordbeezer

    Lordbeezer United States Active Member Active Member

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    Hello..ran motor today for about 20 minutes.runs very quietly.using my starrett speed indicator looks like motor rpm is right at 1800.. Almost 18 sweeps of dial in 60 seconds.guessing motor is set up for 1750 rpm.noticed motor has newer gray paint compaired to rest of grinder with several layers of paint.thanks for everybody's help.will post some pictures when I clean.repaint and get her going
     
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  4. Lordbeezer

    Lordbeezer United States Active Member Active Member

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    Hello.finished rebuilding my 10k.back on grinder.wired in a 26uf capacitor on leg going to motor.hooked other two motor wires to 220.runs forward.off.reverse very smooth..but after 15 minutes motor started getting hot..do I need to wire in a capacitor in one of 220 legs?going to make a rotary converter soon but thinking it will run hot if I wire it like this one.i have a lot to learn about 3 phase ..any ideas? Thanks Phil
     
  5. Lordbeezer

    Lordbeezer United States Active Member Active Member

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    Would it be better to use jumper motor on converter motor instead of trying to start it with capacitor.remove capacitor I wired into grinder motor? Thanks
     
  6. 4gsr

    4gsr Global Moderator Staff Member H-M Supporter-Premium

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    First thing, that is a big oilfield capacitor to have on the generated leg of you small motor. I would think a 15uf would be better. The other two legs, I wouldn't put any capacitors on it. Just direct current from L1 and L2. As for the motor getting hot, that is the nature of a totally enclosed motor like yours with out an external fan to cool it off. The motor is not designed for continuous duty as a TEFC motor is. So it means, you have to stop and let it cool off for a bit after using it for a length of time. The capacitor should not have an adverse affect on heat being generated. If you think it is, take it out of the running circuit and just use it in the starting circuit. Ken
     

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