Farm Equipment - AC 200 drawbar

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AC 200 drawbar

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=25550
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Topic: AC 200 drawbar

Posted By: Central WI AC guy
Subject: AC 200 drawbar
Date Posted: 10 Feb 2011 at 1:30pm

Hi, wondering if anyone has tried to drill a hole in a drawbar before. I have one off of a 200 that I'm thinking about using for a different application that would require drilling another 1" hole in it. Thank you, Jim

Replies:

Posted By: Russ-neia
Date Posted: 10 Feb 2011 at 1:37pm

My local machine shop has done it. Just have to have a high-quality sharp bit, good cutting fluid and patience.

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Posted By: Bruce Nelson
Date Posted: 10 Feb 2011 at 1:42pm

Drilling a drawbar is not difficult. First drill a 1-4"-3/8" pilot hole. Then drill it to 1", turning the bit very slowly, 120 RPM or less. Keep the bit cool and wet with some cutting fluid or plain old engine oil. If you run into a hardened drawbar, which the 200 is not, start the pilot hole by cutting into the drawbar .030" or so with a carbide burr in a die grinder. If the drawbar is hardened, it will not be hardened very deeply.