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  1. #1
    Join Date
    Apr 2009
    Posts
    3

    BPT series 1 MDI HEIDENHAIN TNC 131

    I'm new to the board so HELLO everyone. This seems to be the place to find info on CNC machines! This will be for my own use in my home shop I have a chance to buy a Bridgeport mill cheap but I cant find out much about this model other than that there weren't many of them.It is a series 1 MDI with HEIDENHAIN TNC 131. Is this going to be a problem to get parts for and can it be upgraded reasonably or is it better to buy another model all together.Any help would be appreciated






  2. #2
    Join Date
    Nov 2004
    Posts
    3028
    I believe I installed a couple of these in the early 80's.
    MDI control means to go to a point and store it, on to the next point, etc to make a program. Cannot tell you more than that. Hardware is generic Bridgeport. Motors are SEM thus still serviced. Control is obsolete. Not ever considered a true CNC thus the limited sales.
    Probably low hours (for a reason) thus good hardware/platform for a retrofit.

    George
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  3. #3
    Join Date
    Apr 2009
    Posts
    3
    Thanks for the reply.Lets say its in good condition what would be a fair price ?

  4. #4
    Join Date
    Jan 2009
    Posts
    80
    I'd say around $1000 is reasonable,maybe $1500 if its in mechanically very good shape.

    Kevin

  5. #5
    Join Date
    Apr 2009
    Posts
    3
    Does anyone know if this machine can be used manually.That is without the tnc131

  6. #6
    Join Date
    Sep 2004
    Posts
    140
    If you are at all inclined from many of the projects on this board you may want to retrofit this machine. New drives (Gecko 320, $350 total), computer (free for most people), mach or turbocnc software (free download, $$ to register), power supply (free from the guts of the machine), Hitachi VFD to run the spindle on single phase 220 ($225), and about $200 of wire, switches and misc. parts and you can wind up with a nice machine in your home shop. Good luck!

  7. #7
    Join Date
    Jan 2005
    Posts
    1121
    it appears that it has handles, but probably no dials, not really meant for that

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