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Swapping new chinese power feed for old bridgport, hints?

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  • Swapping new chinese power feed for old bridgport, hints?

    The original table power feed on my 2 hp bridgeport was DOA. Everything I read about it suggests it would be an expensive and/or time consuming fix. It looks like this:

    http://www.ebay.com/itm/REFURBISHED-...#ht_753wt_1110

    I purchased a cheapo import servo power feed. It claims it fits all bridgeports and many others. It's similar to this:

    http://www.ebay.com/itm/135-LBS-X-TR...ht_5615wt_1242

    Upon receiving the device, I think I don't have enough parts. The instructions are pretty unclear/obtuse. It physically fits where the old one comes off, but has no "intermediate shaft" to get from the bevel drive gear to the end of the table drive screw. I need a shaft extension of some sort to make this work.

    Can I purchase this separately? Is there a kit? Recommendations?

    Thanks in advance,

    troy

  • #2
    You either need to swap the lead screw to the non-feed type, or, make/buy the extension for the old screw. Go to Servo's web site there is a drawing of the shaft extension, part number 2368.

    Here's the "normal" shaft dimentions : http://www.servoproductsco.com/specs...00_206_225.pdf

    This might help somewhat : http://www.servoproductsco.com/specs/0206_OLD_80092.pdf

    The shaft extention is show on the last page of this doc : http://www.servoproductsco.com/specs/0206_NEW_80092.pdf



    What is wrong with the BP unit? Is it a 6F or 8F?

    Unless you have something like a bad motor armature (I had one), it's not all that expensive to fix. And they are very good..
    Last edited by lakeside53; 01-21-2012, 11:59 PM.

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    • #3
      I did the powerfeed install on my Burke Millrite years ago, maybe this will help:
      http://www.tdkmotorsports.com/shoppics/burkefeed.html

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      • #4
        Originally posted by michigan doug
        The original table power feed on my 2 hp bridgeport was DOA. Everything I read about it suggests it would be an expensive and/or time consuming fix. It looks like this:

        http://www.ebay.com/itm/REFURBISHED-...#ht_753wt_1110

        I purchased a cheapo import servo power feed. It claims it fits all bridgeports and many others. It's similar to this:

        http://www.ebay.com/itm/135-LBS-X-TR...ht_5615wt_1242

        Recommendations?

        Thanks in advance,

        troy
        Well both of those are very repairable, I've done so on the ones here
        in school.

        ...lew...

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        • #5
          Excellent information and thanks!

          As far as repairing the current unit, I don't want to do component level repairs on a 30 year old board. The motor itself looks pretty bashed up. I don't quite have the skills to substitute a generic pwm board as a hack/update/fix. Plus, I have the new chi-com unit, so I'm going to press on in that direction. I debated for a while though...

          Even in non-functional condition, the old one is worth some money, so selling it will pay for part of my new parts.

          Thanks again for the info.

          Michigan Doug.

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          • #6
            ha, the 30 year old stuff is easy! Most just put in a stock replacement card or send the old one to a number of places that fix them for a fixed fee.

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