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Standard 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.

 

 

 

Kits now include bearing locknuts on all axis. Kit #1 now comes with new thrust bearings on X/Y axis. Kits may take up to 2 weeks to ship.

 

Small-Mill CNC kit #1 - X-Y-Z with BALLSCREWS

 

This Kit includes all the hardware for a 3 axis conversion. Two NEMA23 motor mounts for the table, and a NEMA34 mount for the Z axis, lovejoy couplings, timing belt and pulleys on Z-axis, locknuts on all ballscrews, thrust bearings for X-Y axis, THOMPSON BALLSCREWS, and metric cap screws & bolts. You MAY need to modify your mill to install this kit. THOMPSON BALLSCREWS HAVE 5 TPI.

 $599
 
Small-Mill CNC kit #2 X-Y-Z BALLSCREWS ONLY
 

This includes 3 BALLSCREWS for the X-Y-Z axis and hardware needed to mount the ballscrew nuts. This is for those wanting to make their own motor mounts.

 $389
 
Small-Mill Deluxe CNC kit PREMIUM BALLSCREWS
 

This Kit includes all the hardware for a 3 axis conversion. Two NEMA23 motor mounts for the table, and a NEMA34 mount for the Z axis, lovejoy couplings, timing belt and pulleys on Z-axis, locknuts on the X-Y ballscrews, ANGULAR CONTACT thrust bearings for X-Y axis, PREMIUM ZERO BACKLASH BALLSCREWS, and metric cap screws & bolts. Nema23 motor mount for Z-axis is available. You MAY need to modify your mill to install this kit. DELUXE BALLSCREWS HAVE A 5MM PITCH.

 $969 deluxe
 
Pre-Loaded Ballnuts - For use with kits #1 & 2 only
 
 $33 One Pre-Loaded Ballnut We pre-load the nut 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.
 
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 shafts ONLY. You only need two of these for the X3 mill, the Z axis does not require a coupling.Helical couplings are only available for 1/4" motor shafts.
 
   
Most people no not have to modify the mill to install the ballscrew kit. You WILL need to cut about 1" off the stock X & Y axis screws, if you plan to use the stock leadscrews. These kits will fit both the standard X3 and the Super X3 sold by Grizzly, Harborfreight and several other retailers. If you have a doubt whether your mill will fit one of our kits, just email us for confirmation.

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specsheet
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Gass Spring Kit for the X3

This kit includes, one Gas Spring, all nessesary mounting hardware, and a quality Drill and Tap. To install the gas spring kit, you simply need to drill and tap two holes with the provided drill, and tap. This kit will also work with non-CNC'd mills, so for those who want to keep their mill manual, this will help counter weigh the spindle and make rasing/lowering the spindle head easier.

 $79
Spare ballnuts
 $33 Spare / Replacement ballnut. Order as many as you need. These are the standard Thompson ballnuts, NOT the deluxe type ballnuts.
 


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