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Jacobs chuck

Joined
Mar 23, 2023
Messages
51
Likes
87
Location
Monroeville, AL
Drawbars are good but I've had to remove things that were installed with the overenthusiastic use of one. If the chuck, collet,etc, can't be removed with a drift or by backing off the drawbar, be careful how far you tighten it. I hate pounding on bearings.
 
Joined
Feb 26, 2019
Messages
1,825
Likes
1,423
Location
Lebanon, Missouri
Drawbars are good but I've had to remove things that were installed with the overenthusiastic use of one. If the chuck, collet,etc, can't be removed with a drift or by backing off the drawbar, be careful how far you tighten it. I hate pounding on bearings.
True. I use a small knob, 1-1/2” dia to tighten the drawbar for this reason. It does not need to he-manned, simply snugged up - the all thread is not going to stretch. Its there only to prevent the taper from coming out.
 
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