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Upgrading my CNC machine
 I am upgrading my CNC machine to a use Ballscrew on the X axis. My old X axis used a 1/2" diameter x 10 pitch acme screw and Delrin nuts.
I purchased a 900mm long x 16mm thick metric Ball screw on Ebay and am in the process of adapting it to my X axis.
I had to machine new bearing blocks for the metric bearings.
I also have to machine a new motor drive coupler.
My old screw was 1/4" diameter where it connected to my 1/4" drive motor.
I have to machine a 1/4" to 10mm adapter
The Ballscrew and the two bearing blocks I machined
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This is the ball screw nut support I machined
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Here's the ball screw support shown mounted to the screw nut.
I have to set this assembly into my machine and then drill four mounting holes.
The assembly gets bolted to the lower part of my X axis/gantry
 
Another shot of the screw nut bolted to the support
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Click on the image below for a larger image
Here's a shot of the Ball screw installed.
I was able to crank up the motor speeds in Mach3 after installing this screw.
It is so much faster and smoother than the old acme screw and Delrin nut.
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Click on the image below for a larger image
Another shot of the motor, motor mount, bearing block and ball screw