Regrinding a 5C Speed-Collet Chuck (Hardinge-Sjogren)

Video Description

Today I'm revisiting the Hardinge-Sjogren 5C Speed-Collet Chuck that I cleaned up in a previous video. When we last left it, it had a considerable amount of runout, and a not inconsiderable amount of speculation in the video comments about what might be causing it. Today we'll get to the bottom of it and do whatever it takes to fix it. We'll start with the easy stuff and let things escalate from there. Tools used in this video: *This site contains affiliate links for which I may be compensated NSK Emax Evolution Standard with Lever Handpiece (Amazon*): https://amzn.to/3FdKMBx Bambu Lab X1-Carbon: https://bit.ly/3XzuET9 Bambu Lab X1-Carbon Combo: https://bit.ly/3JzYQaX Bambu Lab Filaments: https://bit.ly/3pusOqd Aventor Magnetic Indicator Holder (Amazon*): https://amzn.to/46IeoTl Mitutoyo .0001" Dial Indicator (Amazon*): https://amzn.to/3FgUMdn Starrett Automatic Center Punch (Amazon*): https://amzn.to/3GWg6VV Klein Tools Strap Wrench (Amazon*): https://amzn.to/44FdUvX Bondhus Metric Hex Key Set (Amazon*): https://amzn.to/3eqZzwb Bondhus SAE Hex Key Set (Amazon*): https://amzn.to/3h9bJLZ Milwaukee Brushless 3/8" Impact (Amazon*): https://amzn.to/3uxwHJ4 3/8" Allen Driver Impact Socket Set (Amazon*): https://amzn.to/3oylrei 5C Collets Set - Imperial (Amazon*): https://amzn.to/3mOcmcQ 5C Collet Set - Metric (Amazon*): https://amzn.to/3rsBz00 HFS 190-Piece (0.061-0.250") Gage Pin Set Minus (Amazon*): https://amzn.to/2DDSAf3 HFS 250-Piece (0.251-0.500") Gage Pin Set Minus (Amazon*): https://amzn.to/3rGdnMT HFS 125-Piece (0.501-0.625") Gage Pin Set Minus (Amazon*): https://amzn.to/3PMIxKm HFS 125-Piece (0.626-0.750") Gage Pin Set Minus (Amazon*): https://amzn.to/3ZRWSK2 Vermont Gage 0.750" Gage Pin (Amazon*): https://amzn.to/32Sdrsk Angle Block Set (Amazon*): https://amzn.to/2R3Lews Raw Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ 00:00 Intro 00:35 Measuring where we're starting 04:15 Checking the adapter 06:13 Clocking the adapter 09:56 Clocking the chuck body halves 12:10 Better - Not great 15:26 Copying the existing taper 17:30 How not to dress a stone 18:30 Grinding - First Attempt 20:52 Measuring results 22:40 Assessing the contact points 23:54 In order to form a more perfect angle 24:56 Grinding - Second Attempt 26:32 Final Results 29:31 Conclusion