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Thread: Round Ram Mill

  1. #1
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    Post Round Ram Mill

    So recently I acquired a mill from an old aeromotive supply company in mu home town. I was able to get it for a great deal but after getting it back to my shop and looking it over in more detail, I noticed that the body of the machine has no casting or identification marks. The machine has a Bridgeport J head mounted on an unknown body.

    The body looks somewhat similar to the old round ram Bridgeport but its obviously different. It does have a serial number on the top of the knee (53026B)

    I was wondering if any one has seen a body like this before. I've done extensive searching on google trying to find a picture or something close to this but it always points back to a round ram Bridgeport.

    mill-1.jpgmill-2.jpgmill-3.jpgmill-4.jpg

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    Looks like the Bridgeport M head mill that I had. It.may have had the head changed

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    The way the turret attaches to the main body is not the way BP did it. BP's had 4 pockets with nuts retaining the turret. This thing has 2 horizontal nuts to the rear to lock the swiveling of the turret.

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    Quote Originally Posted by JohnEvans View Post
    The way the turret attaches to the main body is not the way BP did it. BP's had 4 pockets with nuts retaining the turret. This thing has 2 horizontal nuts to the rear to lock the swiveling of the turret.
    It looks Cincinnati to me. The earlier series before the Toolmaster, could have a different turret, ram and head. They used a "B" preceding the number. So if it is a Cincinnati, the 1st two numbers tell the date. The numbers 53026 mean it was made in 1953 or 1926. I'm going with 1953 because the Bridgeport didn't have a dovetailed ram until mid 1956. They made the "J" heads before that. And dang, my old "J" head does seem to date earlier than 1956.

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    Quote Originally Posted by MilGunsmith View Post
    Looks like the Bridgeport M head mill that I had. It.may have had the head changed
    Yeah this has a J head on it but I have been unsuccessful with finding anything out about the body. Its strange. The J head mounts up without an adapter from the looks of it, the y axis lead screw is offset to the right of the machine (not centered) and the knee handle shaft is 7/8" versus 5/8" like the typical Bridgeport

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    Quote Originally Posted by alum100k View Post
    It looks Cincinnati to me. The earlier series before the Toolmaster, could have a different turret, ram and head. They used a "B" preceding the number. So if it is a Cincinnati, the 1st two numbers tell the date. The numbers 53026 mean it was made in 1953 or 1926. I'm going with 1953 because the Bridgeport didn't have a dovetailed ram until mid 1956. They made the "J" heads before that. And dang, my old "J" head does seem to date earlier than 1956.
    I have a call into one of my contacts at Milacron (the people that absorbed Cincinnati milling machines), now its just a waiting game to see what they say

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    Definitely not a Bridgeport. Does have a Cincinnati look about it. Could be European?

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    I also wondered if it might be a British or European Mill that started out with a different head and perhaps they made a deal with Bridgeport to buy the heads or someone adapted it later on .
    I tried a couple of searches and also found this one with a round ram so there may be others.
    Sunderland Gear Planers
    British Standard Whitworth threads somewhere on the machine might be a clue as would metric threads and dimensions on parts other than the head.
    Jim

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    The clean, functional design of the column says Italian or French to me. Not Rambaudi, theirs were heavier. I'd say Italian.

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    Bridgeport Turret Mill with round ram.
    round-ram-turret-mill.jpgturret-column.jpgturret-round-ram.jpg
    John


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