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Thread: PM 3520c Headstock on 3520B bed

  1. #1

    PM 3520c Headstock on 3520B bed

    I have to Replace the motor and VFD / inverter on my 3520 B. I have procrastinated and now the VFD seems to not be available except for one place that wants $1200 for it. I知 not very electrically inclined and am nervous about putting a different VFD on my machine. The motor is going for $$700-$800. I will likely need to replace many other parts such as bearings and switches. My lathe was unfortunately under several free of seawater due to hurricane Harvey briefly. I was unable to get to it quickly and wash it out. I am wondering if the headstock on the 3520 C would work on my 3520B bed?
    I don稚 know what it might cost and if I can buy these complete units from anybody. Does anybody know if this would work or have any other advice for me? Thanks

    oh and when I say headstock I mean the complete motor and drive system inside the cast iron. i知 pretty sure my existing headstock on 3520 B could not be retrofitted for 3520 C? Right?
    Gregg Feldstone

  2. #2
    Replying To my own post with another question. Is the headstock on the 2020B the same as the 3520 B? It sure looks the same.
    Gregg Feldstone

  3. #3
    Join Date
    Nov 2012
    Location
    Tropical North Queensland Australia.
    Posts
    116
    Greg, do some google searching, you should be able to pick up a VFD way cheaper than that. Try Grizzly or Laguna and Delta Electronics.
    Rgds,
    Richard.

  4. #4
    Join Date
    Jul 2015
    Location
    Southwest Louisiana
    Posts
    156
    One of our club members in Lafayette inverter went out last fall , he had fixed in Baton Rouge. He contacted Powermatic for the recommendation . Louisiana Tool Repair 1-225-926-2220 Ask for Travis Bonfanti
    Last edited by Steve Nix; 04-25-2021 at 6:48 AM.

  5. #5
    I had to replace headstock bearings on my 3520A, many years ago. Priced parts from PM, and also priced them locally. For what PM was charging, I found a tool repair place and an industrial supply place, Kaman, and was able to get it repaired, with parts, and a new drive belt, for less than PM wanted for just the parts. Any good tool repair place can do it. Though, for the PM, you may need a more 'industrial' tool repair place. The little fix it shops may not be able to handle it.

    robo hippy

  6. #6
    Join Date
    May 2010
    Location
    hayden, id
    Posts
    515

  7. #7
    Quote Originally Posted by Gregg Feldstone View Post
    I have to Replace the motor and VFD / inverter on my 3520 B. I have procrastinated and now the VFD seems to not be available except for one place that wants $1200 for it. I知 not very electrically inclined and am nervous about putting a different VFD on my machine. The motor is going for $$700-$800. I will likely need to replace many other parts such as bearings and switches. My lathe was unfortunately under several free of seawater due to hurricane Harvey briefly. I was unable to get to it quickly and wash it out. I am wondering if the headstock on the 3520 C would work on my 3520B bed?
    I don稚 know what it might cost and if I can buy these complete units from anybody. Does anybody know if this would work or have any other advice for me? Thanks

    oh and when I say headstock I mean the complete motor and drive system inside the cast iron. i知 pretty sure my existing headstock on 3520 B could not be retrofitted for 3520 C? Right?
    Maybe you should call Powermatic?
    "Only a rich man can afford cheap tools, as he needs to buy them again and again"

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