How to Remove and Inspect A CNC Chuck

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Watch step by step how to properly remove a chuck from a lathe, disassemble and reassemble the chuck, and then put it back in the lathe.

There are different reasons to remove a chuck and inspect the components. Maybe it is time to clean the chuck parts, or perhaps the machine crashed (and if the machine crashed, you better be inspecting the chuck components).

In this video, Matt Schmelzer from Northeast Wisconsin Technical College, shares some insider tips. Check out the most important places to check during a chuck component inspection. You'll also learn some tricks to disassemble and reassemble, the chuck along with removing and inserting properly into the lathe. Matt also shows which tools he uses throughout the process.

There are tools that you'll need to get the job done. For removing the chuck, you will need the following tools:
Shop crane
Piece of tubing

Here are the tools you'll need to disassemble the chuck components.
Gloves

Drop any comments or questions down below in the comments section and don't forget to subscribe!

Stay tuned for more videos!

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This video is part of our video series: ” LEARNING FROM THE PROS”!
We are collaborating with educators from the most advanced technical schools around the country to provide you with tips and tricks, educational videos, and machining technology insights that will help you become a better machinist and learn something new about our beloved metalworking trade.

This demonstration is part of the Northeast Wisconsin Technical College's program.

To learn more about the manufacturing programs at Northeast Wisconsin Technical College visit

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It took me a 7ft long pipe and a lot of swearing to get the draw tube nut open. It was rusted completely stuck. Now I can finally clean the chuck. Nice video!

mesikamoto
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Fantastic! I wish more people understood how important good Chuck Maintenance is for their product and machine.

evilroyslade
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Nice and informative. It is easy to open and clean a well maintained chuck. I bought a machine that had 30000h and the chuck was never opened, I truly considered to cut the it in half. But with a big hammer and a lot of manhandling it came of and apart.

heronguarezi
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Do you put any grease on the fasteners that hold the chuck components together, and if so do you adjust the torque values? It seems to me that a lot of components like this are assembled with some kind of high sulfur oil on the bolts to ensure they come out again after. It has a unique and noticeable smell. I've noticed the same oil on a lot of the large bolts holding key pieces on to a CNC mill I'm working on fixing up as well.

gorak
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Great video! I have had my new machine for over a year now and it just happens to have the same chuck on it. I will definately be doing this soon. Thanks for the great video. I have a question though, where did you get your torque values for the fasteners?

markpop
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Great Video 👍My first time taking one apart Chips rusted and are stuck in the spindle and froze up jaws

michaelcefaratti
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Please attached assemble video for air pneumatic chuck for cnc machine

vivekraj-qnbm
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Don't you have to verify that the plunger and the master jaws all go back where they were originally?

joeshmoe