x2 spindle motor replacement options ?


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Thread: x2 spindle motor replacement options ?

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    Gold Member dertsap's Avatar
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    Default x2 spindle motor replacement options ?

    Just curious as to what guys have done or if its been done to replace the wimpy spindle motors on the x2 mills , I originally thought that the spindle motors were all the same on these things but it turns out that by luck I got the .47 hp motor which appears to be the smallest motor supplied with these machines . Anyhow , with the belt drive from little machineshop the machine is seriously missing any amount of torque . I know that once I get into any serious cutting at high rpm then I will blow a fuse and any tool that happens to be in the spindle at the time . I tried the belt drive a while back and changed back to the stock gear system , but at this point I'm stuck with the belt drive since the machine after its first real use ate its gearing (so glad I bought chinese quality)
    As it stands I've polished the spindle shaft and the bearing seats to cure the chinese version of what a tight fit is , I figured it was necessary to do so after blowing a half dozen fuses trying to get the spindle to turn with the high rpm belt setting , now the spindle turns at high rpm after a warm up on low and seems to be use-able as long as I'm not overly aggressive with my cuts(i think) , I plan to push it to its limits to see where it fails , so I'll have some fun destroying some new carbides
    I'm considering a replacement motor as long as the cost isn't too great , otherwise I'll use and abuse this until there isn't much left then move onto something with some oomph to it .

    has anyone come up with better spindle motor alternatives




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    Gold Member dertsap's Avatar
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    with some research I've been able answer my own question and found a strong low cost alternative

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    direct replacements?



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    Gold Member dertsap's Avatar
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    yep
    direct replacements for the supply
    from what I've gathered it will make a large difference in torque and speed , so it should be good , or on the other hand with my limited electronics experience i may end up needing to replace a cooked motor
    one thing that I've noticed is a dramatic change with giving it a 20 minute warm up , the spindle is far less resistant , its #@$ing hot but loose , i may tear into the bearings and repack them at some point

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    Gold Member eaglezsoar's Avatar
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    Quote Originally Posted by dertsap View Post
    with some research I've been able answer my own question and found a strong low cost alternative
    Could you share where we can find the replacement?

    Regards, Carl


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    Gold Member dertsap's Avatar
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    replacement KBLC-19PM (on order)

    put it through a quick test as is and it seems ok , I did a bunch of milling on an aluminum block and it cut pretty well on the outside profiles and internal bore ,
    I started small with a 1/4" 4 flute end mill , 50% engagement with a .05 depth of cut(ramped) , 50ipm at 4500 rpm . I'll test it later with some bigger tools and see what happens , if it holds up as it has then it should be ok , it's certainly nothing to impress with but it may turn out to be ok ,and hopefully much better with the new electronics , it still seems to me that the spindle setup is a joke as is the plastic gearing

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


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    Registered nateman_doo's Avatar
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    Do u have a link to the motor?



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    Default The spindle isn't a joke!

    Quote Originally Posted by dertsap View Post
    replacement KBLC-19PM (on order)

    put it through a quick test as is and it seems ok , I did a bunch of milling on an aluminum block and it cut pretty well on the outside profiles and internal bore ,
    I started small with a 1/4" 4 flute end mill , 50% engagement with a .05 depth of cut(ramped) , 50ipm at 4500 rpm . I'll test it later with some bigger tools and see what happens , if it holds up as it has then it should be ok , it's certainly nothing to impress with but it may turn out to be ok ,and hopefully much better with the new electronics , it still seems to me that the spindle setup is a joke as is the plastic gearing
    There is nothing wrong with either the spindle nor the gearing if used within their capabilities. If you want to get more out of the unit then the engineering is up to you.



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    Gold Member dertsap's Avatar
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    Quote Originally Posted by wizard View Post
    There is nothing wrong with either the spindle nor the gearing if used within their capabilities. If you want to get more out of the unit then the engineering is up to you.
    the very first time that I had used the machine to do some cuts the spindle stalled and broke the end mill , a 1/4" end mill that was taking a .1 depth of cut and 50% engagement . it also destroyed the gearing after i put in a new tool to finish the part , its not as though i was abusing the machine with that size of tool . 45 minutes of cutting time and the gearing is toasted .
    If that is pushing it beyond its capabilities then what are its capabilities ? it is rated to use up to a 5/8 end mill , i don't see how i can expect to use it as is with a 5/8 end mill when a 1/4" can stall the spindle at such a light cut ?
    If this is what i have to expect from the $800 that I spent then it is a joke , its no intention to insult anyone and their happiness with their machine but maybe my disappointment can be understood .
    I do want to get more out of it which is why I originally asked for help , something which i rarely ever do in the forums . In the meantime I was able to do some research and found what I hope will help with doing some re-engineering .
    I'm always open to better suggestions if anyone cares to offer them , otherwise i think that I've found all of the info that i need anyhow
    I will do what it takes for me to be satisfied with the spindle performance and if the new board isn't to my liking then I've found a number of other alternatives . So far everything else is good , so in the meantime it works , and at some point very soon i will get the right spindle setup on it and I'll be happy


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    Last edited by dertsap; 12-30-2011 at 07:06 PM.
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    Gold Member dertsap's Avatar
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    Quote Originally Posted by nateman_doo View Post
    Do u have a link to the motor?
    heres a link for you , this guy claims to have gotten better performance with the board change KBLC BOARD

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


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    Community Moderator Al_The_Man's Avatar
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    There seems to be some glaring errors in the hook up in the link you show.
    No1 they show F+ and F- as the feed to the motor and to reverse it.
    The F terminals are for a field for a wound field motor, if the motor is a P.M. field, then the A+ and A- should be used, also NEVER reverse the armature without using the I1 and I2 reset terminals, this is if the power is permanently connected to the supply as the link shows, as the motor is reversed without going through acel first.
    The KB reverse switches have a detent that not only prevents going from forward to reverse instantly, but also has a reset contact.
    Its all in the documentation.
    I am not sure how he was achieving current limit etc as this works on the armature not the field??
    Al.
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    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    Gold Member dertsap's Avatar
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    I believe your correct about the hook up because I've seen where other guys have used the board and they connected to the a+ and a- . the forward / reverse isn't necessary for anything that i do , forward is all that i need .
    heres the board that i bought on ebay eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices , I can't figure out what the difference is between the board that he used and the mod board but this one came with the extra's and it looks pretty straight forward to hook up .
    I hope this will be an improvement because the pulse in the current setup is quite pronounced at all speeds , I don't know if it should be that way but I can hear it pulsing with any amount of cut that its taking at higher speeds , and forget low speed settings because it's bad enough to turn the lights in the workshop into strobe lights

    Last edited by dertsap; 12-30-2011 at 11:15 PM.
    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


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x2 spindle motor replacement options ?
x2 spindle motor replacement options ?