188 wall and 3/4" grade 8 bolts for pins.Īppologies for the crappy cell phone photos. Its adjustable vertically using 3.5 square tube. The A20 lathe only weighs something like 5000 lbs max.Ĭasters always seem like the weak link, the rating on these are not that great, (I'm guessing because of the 1/2" rubber tread) but they have massive king pins and big needle bearing axles. I have run the calcs on loading, at 8776 lbs loaded at the center with 1/4" defelction in the beam, the stress in the W8 x 21 is just over 17,000 PSI. I have a fairly small shop, so the idea was to 'park' it over my lathe that determined the 12 foot width. Most times, the engine hoist was used in a very unsafe manner, (I get in a hurry) lifting too high, too much and/or moving the loaded lift with big pry bars. It has never lifted an engine, but I have used it for everything else. I cannot count how many times in the past 8 years I have used my cheap offshore engine hoist. Well, finally had some spare time and some cash, so I decided to build the crane. I hope this is the correct area to post this (Mods, please move if not correct)Īfter I had to rent a $400 an hour forklift to move in the new lathe (only to the front of the shop that is), it was always in the back of my mind to build a proper crane. Just thought I would share where I'm at on my gantry crane build.
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