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ER32 Collet Chuck - Test Fitting the Recess

19/5/2012

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I was rather curious to find out if the recess fits the bore on the spindle flange. Went back to the shop and take everything off and fit the work.

It seems to fit nicely... 

Picture
Pushing the flange of the chuck to be against the flange with one hand, I tried moving the chuck against the registration boss on the flange. I can feel slight movement and some knocking sound at certain point... boy am I disappointed...

I put on the 3 jaw chuck (without the bolts) and did the same. The slight movements and a little knocking sound was also there. 


I measured the gauge with the caliper - 70.01mm.  The registration boss on the spindle flange measures 69.99mm.  That means that the recess is 0.02mm over sized...  No wonder the gauge fits so tightly into the recess of the 4 jaw chuck.  I've to press it in with my hands.

The work will still be completed.  I'll decide if I need to redo the project after I test the completed chuck.
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