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buying a 4 jaw chuck

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  • buying a 4 jaw chuck

    I am going to buy a 6" 4 jaw chuck for my 9" Logan lathe. My budget is max $300.00. Ebay really is not turning up much at the moment for used USA chucks so I have been looking at new import chucks. I have looked at Enco imports, CDCO imports and Toolmex TMX. The TMX with a back plate costs about $100.00 more than the Enco or CDCO chucks. So, is a TMX really worth $100.00 more? Anyone have other recommendations?

  • #2
    Grizzly Chuck

    I bought a Grizzly import chuck and am completely satisfied with it. It works smooth and is accurate. I completed a Jerry Howell Super Stirling Fan with it and I had no trouble . It held the work tightly and was easy to zero in the stock I was cutting. Boot

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    • #3
      The only 4 jaw import I have experience with is the 5 inch from LMS. I thought the 6 inch to be a touch large for my SB9. I bought the chuck and back plate from them. It works as well as any 4 jaw I have ever used.

      A good flushing and a touch of adjusting on the screw retaining pins and it works great. The backing plate came threaded and needed the usual fitting to my spindle and fitting to the chuck, nothing out the ordinary.

      My only complaint would be that it had some sharp edges here and there but nothing a touch of a file could not smooth out. I am happy with it.

      http://littlemachineshop.com/
      Gene

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      • #4
        The trouble with the Grizzly catalog is,they SELDOM EVER give specs. for runout on their lathe chucks,drill chucks,or tailstock centers. Not even the South Bend stuff!!! I recall seeing ONE tailstock center that listed .0005"

        runout. ONE.

        Of course,I refer to self centering chucks. But,specs for the runout of the face of 4 jaw chucks would be worthwhile.
        Last edited by gwilson; 02-15-2012, 09:30 PM.

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        • #5
          There are many available at Plaza Machinery that are well within your budget.

          Tom
          Tom's Techniques

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          • #6
            KBC Page 520 (Cdn), Pratt-Burnerd America/Atlas Workholding, 4 jaw, independent, iron body, plain back, 6" under $300

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            • #7
              I'd also recommend using a Craig's List search engine to see if one is available. With flat rate shipping from USPS the cost to mail it will be minimal.

              BTW, I bought a used 10" P&W 4 jaw for $100 and shipping was only $14.95 in a flat rate box.

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              • #8
                The only spec that means much on a 4 jaw chuck, is the straightness of rod gripped in the jaws. We all know you can center a rod in a 4 jaw by just taking your time and skill to do it, but if the gripping faces of the jaws are not perpindicular to the chuck face, and parallel to each other, then the rod (or anything else) gripped in the jaws will not be straight.
                --Doozer
                DZER

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                • #9
                  tools4cheap.
                  mostly imported, but the fellow that runs it(Jeff Beck) actually checks what he sells and if it doesn`t pass muster he doesn`t sell it or puts in in the "discount" part of his website with full disclosure of what he found.
                  i can`t say enough good things. i will alway buy from him given the choice.

                  http://www.tools4cheap.net/

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                  • #10
                    How about this Bison 6" chuck? Replace the back plate and you're in business.

                    http://www.ebay.com/itm/ws/eBayISAPI...ectorid=229466

                    Or buy a new Bison here about $247: http://www.nolansupply.com/bysubcate...lse&specs=True

                    I ahve no connection with either link. I just did a search and found them.
                    Last edited by firbikrhd1; 02-16-2012, 09:34 AM.

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                    • #11
                      Last year I bought a nearly new Pratt-Burnerd 12" 4 jaw, D-16 mount, on ebay for £14, that's less than $20. Was I robbed?

                      Malc.

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                      • #12
                        Originally posted by Doozer
                        The only spec that means much on a 4 jaw chuck, is the straightness of rod gripped in the jaws. We all know you can center a rod in a 4 jaw by just taking your time and skill to do it, but if the gripping faces of the jaws are not perpindicular to the chuck face, and parallel to each other, then the rod (or anything else) gripped in the jaws will not be straight.
                        --Doozer
                        a point often not noticed by the beginner who thinks 4 jaw accuracy just depends on the user's set up of the work. Its worth running the indicator along the work as well the normal rotation check, but really with a 4 jaw what you're paying for is how aligned under load those jaw surfaces are

                        To the OP, why just USA chucks? Pratt, Rohm Yuasa or even Bison and TOS aren't good enough?

                        A chuck is a work holding device, like a vise, a cheap one is just not worth it. For 300 I'd be looking for a gently used one from on of the above noted foreign offshore manufactures 300 should get you an excellent one

                        Pratt's Atlas line Russ is afaik low end offshore and is Pratt in name only. Kind of stunning Pratt would lend their name to the branding, another corporate marketing blunder.
                        in Toronto Ontario - where are you?

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                        • #13
                          Pratt's Atlas line Russ is afaik low end offshore and is Pratt in name only. Kind of stunning Pratt would lend their name to the branding, another corporate marketing blunder.
                          Yep, that is what I found out too (they tell you what is made where on their site and that one, and the three jaw of similar number I bought, are either left out or off shore) [my hope, yeh the stuff that springs eternal, was that for a bit more $$$ than other off shore, there was a little more quality control...have yet to use so don't know; in looking at used US sources, the issue became/is the 20lb limit on those priority boxes]

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                          • #14
                            I appreciate the responses. I got a few new places to look for tooling now and I did not realize Bison sold an inexpensive chuck. Why USA made, why not? It is just a personal preference that I try to buy USA when I can.

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                            • #15
                              Originally posted by TGriffin
                              There are many available at Plaza Machinery that are well within your budget.

                              Tom
                              +1 for Plaza Machinery. Joe will have what you want in any price range, brand, condition.
                              Cheers,
                              Gary

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