Drill Press Restoration

mikeh74

Mike
User
The DP-220 is a 14" drill press. This is an 11" drill press with a 1-7/8" column. It can be restored to a very accurate and quiet drill press. Replacing the sleeve bearings is an annoyance because of one dimension being rather non-standard. Not impossible to find, just its rare enough that finding one is annoying. Delta's 11-072/11-280 will share the same head parts that might be easier to find.
Thank you! Very helpful.
 

Hmerkle

Hank
Corporate Member
I would suggest NOT sandblasting the table top, but rather sanding it. or using the Klingspor sandflex blocks I think the finish will be better for a "use" surface...
 

mikeh74

Mike
User
I would suggest NOT sandblasting the table top, but rather sanding it. or using the Klingspor sandflex blocks I think the finish will be better for a "use" surface...
I'm actually using a rust remover bath. The bed is in the bath now. Has done great on the rest of the parts.
 

Hmerkle

Hank
Corporate Member
I'm actually using a rust remover bath. The bed is in the bath now. Has done great on the rest of the parts.
That is good!
I thought you said you were going to blast it, which I find is good for non-working surfaces.
What are you using, Evaporust or something else?
 

mikeh74

Mike
User
That is good!
I thought you said you were going to blast it, which I find is good for non-working surfaces.
What are you using, Evaporust or something else?
I was considering blasting it as I have a blast cabinet. I purchased rust rescue from Home Depot for a few small parts I didn't want to blast. I was so impressed with it I tried it on a few of the cast pieces. I have now gone back and purchased a few more gallons and should be done with rust removal tomorrow.
 

mikeh74

Mike
User
Now if I can just figure out this motor. Can’t seem to get the case open. I’ve watched several video on how to clean up this motor and from what I can see it looks like the short out “necklace” is missing some teeth and the spring is sitting too high.

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mikeh74

Mike
User
Finally was able to get the engine apart. Good news the short out necklace is complete. Bad news the spring is shot.

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tvrgeek

Scott
User
A bit if a funky design I was not aware of. Seems the shorting necklace and spring are critical. Personally, I would be looking for a good used induction motor, probably 3/4 HP or so as a nice upgrade.

 

mikeh74

Mike
User
A bit if a funky design I was not aware of. Seems the shorting necklace and spring are critical. Personally, I would be looking for a good used induction motor, probably 3/4 HP or so as a nice upgrade.


I'm so far into this one, I'm going to try and get it back and operational. May still upgrade later. It has been an education.
 

Hmerkle

Hank
Corporate Member
I'm so far into this one, I'm going to try and get it back and operational. May still upgrade later. It has been an education.
It is probably not logical but emotionally, I hope you are able to save that Delta motor!
 

marinosr

Richard
Senior User
Awesome, that spring is a fixable problem! Here is a guide for replacing the necklace spring on a Delta RI motor. The necklace looks to be in good condition. I bet that motor will run again!
 

mikeh74

Mike
User
Awesome, that spring is a fixable problem! Here is a guide for replacing the necklace spring on a Delta RI motor. The necklace looks to be in good condition. I bet that motor will run again!
Thanks. I have viewed this thread before. However this is for a 1 HP motor and I have a 1/3 HP motor. I'm trying to figure out if it's the same spring with a smaller radius. I may just go ahead and purchase the materials they used and try it out.
 

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