Finding a motor for a Brown and Sharpe 510
Close
Login to Your Account
Results 1 to 8 of 8
  1. #1
    Join Date
    Apr 2010
    Location
    Seattle, Wa USA
    Posts
    1,547
    Post Thanks / Like
    Likes (Given)
    383
    Likes (Received)
    296

    Default Finding a motor for a Brown and Sharpe 510

    I am in the midst of rebuilding a B&S 510.
    The machine saw a lot of heavy use, and either the previous owners were very creative or it might even be some kind of franken-grinder since there some odd things about it.
    Anyway, the motor it came with was a GE TFEC 480V 3450RPM 1HP 3PH 56 frame with a resilient mount.
    The shaft on the motor is bent (how the hell do you do that in a grinder?).
    I want to run it off a VFD and am looking for a suitable replacement.
    The grinder uses o-ring style drive belts, and the motor placement on the moving spindle head means I have to stay close to the original mounting style.

    My specific questions are:
    1. Does the resilient mount make a big difference? I have found a few motors locally that would work except they are normal rigid 56 mount without the rubber rings.
    2. Does the motor need to be balanced, or will the factory balance be sufficient (I know this one will be hard to answer).
    3. Should I even consider single phase?
    4. The original spec was for 1HP but I have found what looks like a good choice but it is 2HP. Is there any reason I should not upsize the motor?

    All help and advice appreciated.
    Thanks!
    Josh

  2. #2
    Join Date
    Nov 2006
    Location
    Camarillo Ca
    Posts
    485
    Post Thanks / Like
    Likes (Given)
    27
    Likes (Received)
    113

    Default

    I have a motor that may work for you, except it is 1750 RPM. Will that work?

  3. #3
    Join Date
    Apr 2010
    Location
    Seattle, Wa USA
    Posts
    1,547
    Post Thanks / Like
    Likes (Given)
    383
    Likes (Received)
    296

    Default

    Quote Originally Posted by Bob-J-H View Post
    I have a motor that may work for you, except it is 1750 RPM. Will that work?
    Thanks, but it really needs to be 3450 RPM. I could double speed a higher HP 1750 motor but that seems like more trouble then it is worth.

  4. #4
    Join Date
    Nov 2006
    Location
    Camarillo Ca
    Posts
    485
    Post Thanks / Like
    Likes (Given)
    27
    Likes (Received)
    113

    Default

    I just looked again. I have a Dayton 1 hp. 3450 rpm. resilient mount. 56 frame. Let me know. Bob

  5. #5
    Join Date
    Apr 2010
    Location
    Seattle, Wa USA
    Posts
    1,547
    Post Thanks / Like
    Likes (Given)
    383
    Likes (Received)
    296

    Default

    Bob
    I sent you a PM.
    Thanks!


    Sent from my iPhone using Tapatalk

  6. #6
    Join Date
    Sep 2017
    Country
    UNITED STATES
    State/Province
    New Jersey
    Posts
    161
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    43

    Default

    I also have a b&s 510 which came with a 1hp Dayton motor, non resilient mount, but with a vibration isolator pad sandwiched between the mounting plate and motor.

    It also had a 3ph 1hp GE with resilient mount which was the original motor included. I replaced the bearings on that and reinstalled on a VFD.

    I feel as if the resilient mount transmitted less vibration into the machine, though some might say the single phase will vibrate more inherently, and the GE might be a better balanced motor to begin with.

    It didn't make as much difference to surface finish as I expected though. Proper wheel selection and balancing and side truing was more significant in my case. The VFD is nice for slow start and stop and variable speed.

  7. Likes jkopel liked this post
  8. #7
    Join Date
    Dec 2005
    Country
    UNITED STATES
    State/Province
    New Jersey
    Posts
    3,944
    Post Thanks / Like
    Likes (Given)
    283
    Likes (Received)
    488

    Default

    Each of the SGs I have owned had a Grinder Duty motor, stamped on the data plate. I assumed it was a higher level of balance, as the external appearance was the same as a none grinder duty motor. I do have a 1HP 3phase motor it is from a direct drive Harig grinder, so is a face mount, no feet. contact me if interested.

  9. Likes jkopel liked this post
  10. #8
    Join Date
    Apr 2010
    Location
    Seattle, Wa USA
    Posts
    1,547
    Post Thanks / Like
    Likes (Given)
    383
    Likes (Received)
    296

    Default

    Quote Originally Posted by Toms Wheels View Post
    Each of the SGs I have owned had a Grinder Duty motor, stamped on the data plate. I assumed it was a higher level of balance, as the external appearance was the same as a none grinder duty motor. I do have a 1HP 3phase motor it is from a direct drive Harig grinder, so is a face mount, no feet. contact me if interested.
    Thanks, I found what appears to be the identical resilient mount GE motor on ebay.
    I will know if I made a mistake when it gets here tomorrow.

    Given the way the motor is shoehorned into the column there is very little room to fabricate a face mount adapter.
    I am sure it is possible, but I would rather avoid it if I can.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •