Info on Tuning up the drill press?

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Forum topic by juicegoose posted 01-18-2010 10:31 PM 1623 views 1 time favorited 2 replies Add to Favorites Watch
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117 posts in 3027 days

01-18-2010 10:31 PM

Guys I’ve got a Jet 17MF drill press and overall she runs pretty good. I have noticed that when i’m drilling a hole with my bradpoint bits though that you can tell the bit center is obviously moving around. Are there any good places for info on tuning up the drillpress, checking the runout procedure and stuff like that?

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View northwoodsman's profile


242 posts in 3711 days

#1 posted 01-19-2010 12:12 AM

I have the same drill press and was having the same problem. Remove the chuck & quill and make sure that they are clean. I ended up purchasing a new keyless chuck for around $25. That eliminated this problem for me. One of the keys in the original chuck seemed to be out of alignment. I put a smooth steel rod in the chuck and could feel that it was out of alignment with my hand. I was going to put 2 link belts on it also. I took both belts off to measure them, and just for the heck of it I turned it on to check for vibration. It vibrated just as much without the belts as it did with the belts. I made sure my pulleys were in perfect alignment and found that I needed to place a shim under two of the motor mounts to line up that pulley so it wa coplaner with the others. Once I did all this, it runs better than it did brand new. The chucks are easy to find. I purchased a Jacobs 3.

You can also check the runout with a caliper. Clamp a piece of wood to the table. Drill a hole through the piece of wood. Measure the hole and the drill bit with the caliper. If the hole is larger than the bit, you have runout. The difference is the amount of runout. Another method is to use a smooth rod in the chuck. Clamp a dial guage to the table so the tip is touching the rod. Slowly turn the chuck (unplug the drillpress and turn the belt by hand). Look for fluctuations on the dial as the rod turn.

-- NorthWoodsMan

View juicegoose's profile


117 posts in 3027 days

#2 posted 01-19-2010 03:29 PM

Thanks for the Info. I tired the dial indicator trick once and the whole press was wobbling around enough that i felt like I was probably getting erronous readings. I’ll try the pully coplaner thing next. Did you look into getting the pulleys balanced?

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