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Tractor Talk Discussion Forum

Drill a roll pin

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Don c

07-20-2006 11:19:29




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Would like to know if you can drill a roll pin or is it a hardened metal, its in a coupler and it has to come out as its broke and need to drill to the shaft in middle, both sides so I can find where its at on main shaft. Thanks Don c

Not enough room to get a hold on it with vice grips




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souNdguy

07-20-2006 21:06:12




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
I've used carbide/masonry bits on them. If you are lucky and have a drift of the same ID o fthe hole.. you might still be able to drive it out. A spiral easy out may even work..

Soundguy



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Larry NE IL

07-20-2006 19:36:08




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
When you're drilling, squirt some turpentine on the drill. Old timer told me that and it does make the drill work better. Still not an easy chore. Good luck, Larry NE IL



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730virgil

07-20-2006 19:42:00




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 Re: Drill a roll pin in reply to Larry NE IL, 07-20-2006 19:36:08  
larry did you get any rain this am ? we lots of lighting i don't know how much rain tall kid ran over rain gauge with lawn mower



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Blue Buddy

07-20-2006 14:13:09




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
Harder than heck to drill, couple thoughts, are 2 kinds of pins called "Roll Pins", one is a spiral pin with several rounds of material in it, the other has just one round and a split to the centre down one side, spiral is harder to break if you can find em, but neither will drill well with the overlap and splits in them Can you slide a small punch or piece of wire down the hollow center, then rotate the shaft to line it up and drive it clean through? if not I would try the welder, tack a bolt or small piece of metal to the end of it and then yank it with a prybar maybe? could do both sides that way, but if you get one side you can likely line stuff up and drive the other parts straight through

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Don c

07-20-2006 12:05:20




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
The pin is broken and shaft is turning inside of collar thats why I need to know if you can drill them, thought they was of hard metal but wasn't sure..Thanks for all help. Don c



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massey333

07-20-2006 14:57:23




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 12:05:20  
Yes they can be drilled,but with PAINS-TAKING care.Go slow and maybe increase your bit size a time or two,it is hard on bits,double rolls are the Ones.All depends on pin size too on the ease.



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massey333

07-20-2006 15:30:43




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 Re: Drill a roll pin in reply to massey333, 07-20-2006 14:57:23  
Second idea,IF the collar is turning on the shaft,try taking the collar off the shaft and then you could punch the pin out,might be the eastest thing to do. Good luck



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RodInNS

07-20-2006 14:04:45




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 12:05:20  
I've never drilled one successfully. However, quite often they will break if you get at them with a punch and a big hammer.... Probably not what you wanted to hear. Otherwise, the flame wrench is my general solution. HTH.

Rod



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Coloken

07-20-2006 11:46:00




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
No help from me. Just to make clearer..you mean the center is not lined up, so imposible to punch.



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xragman

07-20-2006 11:37:12




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
In my experance all roll pins are very hard. I have drilled them out with a carbide drill. It is not easy, evan in a milling machine.



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IH2444

07-20-2006 11:37:04




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
All the roll pins I have seen/used have been very hard. Not sure you could drill one.



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fourspeed

07-20-2006 11:34:16




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 Re: Drill a roll pin in reply to Don c, 07-20-2006 11:19:29  
I have never tried to drill a roll pin. Usually I use a punch of the same size and drive it out. Much quicker and easier without enlarging the hole in the piece of equipment. Good Luck



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