Nikken NX4 CAT50 Spindle Speeder spinner 10,000RPM (CAT50U-NX4) with 7 collets
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  1. #1
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    Default Nikken NX4 CAT50 Spindle Speeder spinner 10,000RPM (CAT50U-NX4) with 7 collets

    This is a Nikken CAT50U-NX4 Spindle Speeder that I picked up at an industrial auction but decided against using it. It has an integral CAT50 shank with a pull stud included in the box. This speed increaser has an SK16 collet chuck on it and includes 7 collets with it (1/8", 3/16", 1/4", 5/16", 3/8" and two 13mm holders [one of which was being used for 1/2" end mills]). I picked this up at an industrial auction and changed my mind about using it. No idea what these are worth so I'm going to say $1500. Make me an offer.











    Location is 46041.

    Dope
    Last edited by Dope; 06-09-2021 at 12:24 AM.

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    I can't edit the original post, but I'm dropping the price from $1500 to $1000. Free shipping.

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    Okay, any takers for $500? These things are almost $3000 new from Lyndex.

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    What's the ratio? Is 10k the max out or the max input RPM?

    Is the mounting lug down in the box somewhere?

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    Quote Originally Posted by Garwood View Post
    What's the ratio? Is 10k the max out or the max input RPM?

    Is the mounting lug down in the box somewhere?
    I believe that NX4 denotes a 4:1 ratio, they also sell an NX5 which is 5:1. 10k is the maximum output RPM.

    There's a pull stud but I'm not sure what you mean by the mounting lug, do you know what it looks like? I picked this up for a project to adapt it to an old low-speed horizontal mill but I ended up never using it.

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    That's what it looked like, but I was hoping maybe it was 10K input 4x ratio.

    There's a lug that you mount onto the headstock of the machine you're going to run this in. They're all a little bit unique, but basically a taper guides the rod into a close size socket. The lug is shaped so it somehow disengages a brake or anti-rotation device when it's in the spindle. You can make one easy enough, but it helps to know what the manufacturer had in mind.

    If I didn't have a 10k Cat50 machine I'd be all over that for $500.

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    That looks like it's had all the spring loaded parts removed to be used only on a manual machine.
    It's not often you see collets that big in a speeder, that must be a rugged one. FWIW $500 is about the right price for a speeder these days.


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