DIY Belt driven Brushless Spindle for PCB milling - Page 2

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Thread: DIY Belt driven Brushless Spindle for PCB milling

  1. #13
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    Quote Originally Posted by mactec54 View Post
    I have taken them out before and put them back in the same bearing after servicing the bearing, there is no reason that would not work, unless where the inner seal lip runs may not be ground the same

    Is this what you where looking for https://www.123bearing.com/bearing-F...+Vehicle+Parts
    Yep, but this one is a generic one. I'm looking for Japanese bearings by EZO. They seem to be excellent quality and the F698-ZZ one is selling for a little more than 6 bucks here. They do have F688-2RS, which are 16mm of as opposed to 19mm in 698, but bigger outside diameter produces better characteristics and durability a long with making the spindle body lighter. (I've moved from simple "tube" spindle body design to one just like pictured in op. Integrated bronze bushings and lead screw but mount look worth it to me. Already made a model in Solidworks, found a 85*85*85mm chunk of aluminum for just 6.5 bucks and a shop with a HAAS CBC mill to make it.



  2. #14
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    Default Re: DIY Belt driven Brushless Spindle for PCB milling

    BrushlessDC motors are common place in RC vehicles and are used for high speed CNC spindle. They are small, light, fast and can be inexpensive.




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DIY Belt driven Brushless Spindle for PCB milling
DIY Belt driven Brushless Spindle for PCB milling