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  1. #1
    Join Date
    Oct 2018
    Location
    Belrose Sydney
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    Default Motor Replacement on Rockwell Delta lathe

    I'm a new member and would like to seek some advice - need to replace a burnt out motor on an old Rockwell Delta lathe. The motor has no nameplate on it so not sure of rating. It has a 5/8" shaft diameter with a 3 stage pulley. What motor would suit the best in terms of speed / power? I'm thinking maybe a 4-pole (1400rpm), 1hp/0.75kW.

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  3. #2
    Join Date
    May 2011
    Location
    Murray Bridge SA
    Posts
    3,339

    Default

    Some photos would help in identifying a suitable motor for your lathe. Also measurements of the base plate.
    Kryn
    To grow old is mandatory, growing up is optional.

  4. #3
    Join Date
    Sep 2008
    Location
    North Carolina, USA
    Posts
    2,327

    Default

    Quote Originally Posted by chrisviljoen View Post
    I'm a new member and would like to seek some advice - need to replace a burnt out motor on an old Rockwell Delta lathe. The motor has no nameplate on it so not sure of rating. It has a 5/8" shaft diameter with a 3 stage pulley. What motor would suit the best in terms of speed / power? I'm thinking maybe a 4-pole (1400rpm), 1hp/0.75kW.
    I think your choice is a good one. You do not want a 2800 rpm motor. As a cheap turner I would take your old motor and pulley to a motor repair shop and ask for a good used or rebuilt motor with same mount and shaft. Have them move the pulley unless you are familiar with old, sometimes cranky machinery. Get good instructions on the electrical connections.

    You might ask the shop if the motor can be repaired. Usually on small motors it is not cost effective, but it doesn't hurt to ask. If your lathe is a bench top, the motor is likely to be 3/4 HP, a 1 HP would be better but not too much.

    If you opt for new, same instructions apply. Life is easier if the new base plate of the motor matches the holes on the lathe.

    Some discussion here: Need motor for Rockwell 46-111 | American Association of Woodturners
    So much timber, so little time.

    Paul

  5. #4
    Join Date
    May 2013
    Location
    Rockhampton QLD
    Age
    68
    Posts
    2,335

    Default

    Welcome to the forum Chris.

  6. #5
    Join Date
    Oct 2008
    Location
    Leopold, Victoria
    Age
    65
    Posts
    4,677

    Default

    This chart may help you determine the frame size at least.

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