Tuesday, November 14, 2023

Machinist making a propeller shaft bearing

 


9 comments:

  1. A technical accomplishment that is rapidly becoming extinct in America. We are losing our technical and manufacturing abilities at warp speed.

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  2. we didn't lose anything. it was sold as scrap as companies closed in the 1970-80's . add in the dropping of shop classes across the country didn't help at all.
    then you had CEO's that sold out anything they could overseas for money.
    just look at the rust belt. granted the CEO's and some stick holders made some quick money doing that. but they did fuck the country in the long run.

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    1. American steel companies never updated their plants after WWII, the owners squeezed every last nickel they could and then shut them down when they couldn't compete with modernized plants. To hell with employees or community or country.

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  3. A real C & C machinist, Crank and Cut! My first engine lathe was a old South Bend that had been converted from a overhead line shaft. Also had two humpback drill presses that were originally driven by overhead belts. Wish I had kept them but just no room.

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    1. And if you HAD kept it, you could have sold it for a lot. Even the most clapped out, beat up, out-of-square-in-all-axes South Bend (it was probably a 10, heavy 10, or a 13) will command the most astounding prices these days. Bronze bearings, 6 speeds, a single wall apron and a leadscrew that doubled as the driveshaft. Leadscrew and gears literally worn to sharp points with a dip in the ways you can see....and you'll get a grand or even two for it. Been there and done that. Replaced mine with a Standard Modern 1340; the old beater SB paid for half of the new one.

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  4. Propeller shaft bearing? What is being turned is not a bearing. The shaft appears to be more likely one that would attach to a runner in a hydro turbine. ( the thing that goes around inside a dam to make electricity). Anyway, I used to work in a hydro manufacturing plant and saw this type of thing regularly.

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    1. Yep. Might be a bearing pocket, perhaps, but regardless it looks like some kind of counterbore, purpose unknown.

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  5. All turned with no safety glasses. How did we ever survive?

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    1. No glasses. No guards. Floppy, loose clothing. He probably drank straight out of the garden hose.

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