tpactools cat 40 tool holders
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  1. #1
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    Default tpactools cat 40 tool holders


  2. #2
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    I never have, and not sure I would.

    I am leery of:
    "decent quality at reasonable price"
    "production balanced.... to meet standard industrial needs"

    You may want to have a look Frank's site. He is a member on this board, and makes awesome stuff!
    The price is the same, but his are made in the USA! (...and you are supporting another US machine shop/ forum member/ and talented businessman.)

    CAT4 ER Collet Chuck Tool Holders Made in USA - MariTool


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  4. #3
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    Quote Originally Posted by OHIOTURBO6 View Post
    If "good enough" is good enough for you, then by all means.

    Doug, that $100 price is for TWO collet chucks and TWELVE collets. I pay over 1.5x that for just for Techniks collets.

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    +1 for MariTool. High quality at a great price and USA made. Trifecta!

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    How many people are going to start a post "Should I buy this random Chinese tool holder?" and then we get the inevitable "Buy Mari tool duh!" lol

  7. #6
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    I have 20 of there Bt40 er collet chucks in er16 and er32 and there are very nice for my needs. I am running carbide drills in them at a max rpm of 6K. I would buy more in a heartbeat. Out of the 20 I have, I have only had one that had more them .0001-.0002" run out and that one had chatter marks from grinding. The sent me on to replace it and had it in today. The collect are very well finished ground and have a high polish on them. Jut as good or better than my 2 set of Techniks collets. My drills all run at.0002-.0008 at the tip of the drill. Works for me and my non high speed spindel.

    I bought the first one because the price was right for the need all after was because of how nice they were made and ground.
    Last edited by B-Mathews; 12-29-2016 at 09:56 AM.

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    Quote Originally Posted by B-Mathews View Post
    My drills all run at.0002-.008 at the tip of the drill.

    .008" runout at the tip of the drill?

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    Go straight to alibaba dot com and search for Dezhou Shengda and buy direct. I've seen a number of Chinese companies that have eBay stores and direct sales websites, and TPAC seems to be following the same model.

    Sent from my HTC One using Tapatalk

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    Quote Originally Posted by [email protected] View Post
    Doug, that $100 price is for TWO collet chucks and TWELVE collets. I pay over 1.5x that for just for Techniks collets.

    OH! I didn't notice that!

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    Quote Originally Posted by Mtndew View Post

    .008" runout at the tip of the drill?
    Fixed that it should have been. 0008"

    At that price what do you have to lose to try them?
    I have not run them past 6K rpm's but every one of them
    are drilled in one or two spots on the flange for balancing

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    Quote Originally Posted by OHIOTURBO6 View Post
    What are you usin these for? Christmas tree ornaments?

    Go talk to Frank..........................................

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    Thanks for all the input guys. I appreciate it! I did get some of these holders in and I'm not pleased one bit.
    Keep in mind, I'm a design engineer and have been for 21 years. I just bought this mill a few months ago. I am green on the tooling side here. Growing pains I guess.

    I have 1 Kennametal tool holder that is very solid in the taper. Then there is this one tpac one. See the video... Tool holder slop - YouTube

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    Try using a test indicator. When I see that much movement from that short a rotation I suspect a problem with indicator setup.

    Put a test indicator on it. And unless you plan on machining with that portion of the holder put the tip on the SHANK of the cutting tool.

    Ahh, watched again. Tool taper is not seating. Big problem. Looks like return shipment is in order.

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    That is AMAZING! You pay for shit.....and then you get shit!!!!!

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    Quote Originally Posted by Mebfab View Post
    Try using a test indicator. When I see that much movement from that short a rotation I suspect a problem with indicator setup.

    Put a test indicator on it. And unless you plan on machining with that portion of the holder put the tip on the SHANK of the cutting tool.
    Can you see the holder moving and the spindle not. This was just a quick setup to show how this holder fits like a hot dog in a hallway. I sent a link of the vid to the seller of these holders. If I put my test indicator on the tip of the probe I may run out of travel

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    That looks like a retention knob problem, not taper.

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    Quote Originally Posted by msimard View Post
    That looks like a retention knob problem, not taper.
    Looks to be a knee mill though...........

    OP,
    Are you using the knobs or threaded drawbar?

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    That thought crossed my mind as well. I swapped out knobs and got same results.

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    Quote Originally Posted by david n View Post
    Looks to be a knee mill though...........

    OP,
    Are you using the knobs or threaded drawbar?
    The Machine is a Tree Journeyman 325, It uses the Mazak style retention knobs.

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    I installed the Tpac retention knobs on my Kennametal holder it seated tight, no play.


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