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Ballscrew kits use 5/8" Thomson ballscrews with a .200 pitch. Here is a link to the Thomson catalog page with detailed information on the ballscrews. All ballscrews are now polished, they are no longer black, but shiny sillver as shown in the kit #4 photo.

If your motors do not have a 1/4" shaft, let us know so we can ship matching couplings.  
Mini-Mill CNC kit #1 - 'Z' axis only
  

This kits includes, one NEMA23 motor mount for the Z-axis, thrust bearings, a BALLSCREW, shaft collar, lovejoy spider motor coupling, side mounting block for the ballnut, and metric cap screws. You do not have to modify your mill to install this kit. Get this kit if you want to make your own X-Y motor mounts.

 $279 Click to enlarge
  

Mini-Mill CNC kit #2 - with X-Y-Z BALLSCREWS

  

Includes BALLSCREWS for the X, Y & Z axis. Extra hardware for installing the ballscrews is also included.

 $579 kit4
  
Mini-Mill CNC kit #3 - with X-Y BALLSCREWS
 

Includes everything to convert the X & Y axis with BALLSCREWS. Extra hardware for installing the ballscrews is also included. Get this kit if you want to make your own Z axismotor mount.

 $429

Click to enlargeClick to enlargeClick to enlarge

  
Mini-Mill CNC kit #4 X-Y BALLSCREWS ONLY
 

This includes 2 BALLSCREWS for the X-Y axis and all hardware needed to mount the ballnuts under the table. This does not include the nema23 motor mounts.

 $279 Click to enlarge
  
LMS HiTorque X2 - LittlemachineShop
 

 $45 LMS HiTorque Mini Mill upgrade (littlemachineshop.com). If you have a Little Machineshop Mini-Mill (LMS Part #3900) Please add this upgrade to you cart. This will upgrade a regular X2 Kit #2 to longer ballscrews on the X/Y axis and larger mounts on each end of the table.

 
 

LMS Kit photos

 
Spare ballnuts
 

 $33 Spare / Replacement ballnut.

Order as many as you need.

 
   
The X-Axis extension is now shipping with kits #4 & #5. You will not loose any travel on the X-axis with these kits. Kits may take up to 2 weeks to ship. If you have any questions, please email us!

An installation guide for the mini mill kit is in progress. Added a couple videos milling some junk aluminum on the X2. Feedrate was 20 IPM at 2500 RPM.

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You will need DIVX to watch these videos. Click HERE to download it FREE!DivX

Ballnut options

 $33 Pre-Loaded Ballnut Service. We pre-load one bsllnut with the largest oversize balls that will fit and still allow smooth movement, to lower the backlash between the nut and the screw. Each ballnut is matched to its screw. You can add up to three Pre-Loaded ballnuts to your cart, depending on your kit.
Heli-Cal Coupling - ZERO backlash
 $24 Heli-Cal zero backlash coupling. These are premium aluminum couplings, designed for servoes. ZERO BACKLASH. These will fit a 1/4" stepper/servo motor shaft. You will lose a small amount of X travel with these couplings undless you grind a small amount of relief in the saddle. Only one coupling can be used with KIT #1, three couplings are needed for KIT #2. If you are NOT purchasing these with a kit please specify your screw shaft diameter.
 


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