What is the hole on the rare of the ram used for

Student Machinist · Feb 10, 2004

Hello,

Im a student in a Machinist program at my local junior college. My instructor has given my class a research problem. He asked us what is the hole that is on the rear of the ram on a Bridgeport Mill used for. I have searched the internet without much luck. Any help would be apreciated.

Student Machinist · Feb 10, 2004

Heh,
I guess in my frustration I forgot how to spell. What I meant to say was "What is the hole used for in the "REAR" of the ram on a Bridgeport Knee mill". Sorry all

adammil1 · Feb 10, 2004

Student machinist,

It is to mount an additional head, the most popular being the shaper head, but i've even seen m-heads (I don't know why) and a rare head such as a cherrying head. See the links, once done machining with the J, just turn the ram around and use the other head.

Adam

http://www.lostcreekmachine.com/images/B012611.jpg

http://www.lathes.co.uk/bridgeport/page4.html

jim rozen · Feb 11, 2004

Some of the M heads were special, high speed
units - that may be one reason one could find
and M and a J on the same ram. The high speed ones had unusual flat belts.

Student Machinist · Feb 14, 2004

Thanks for all the tips. The pics Adammil1 had were especially helpful. My Instructor gave me A+ for my effort. I was the only one in my class of 12 that had the answer. I will share the web address of this forum with my other classmates so they can get good information.

Thanks Again.

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What is the hole on the rare of the ram used for

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