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  #1  
Old 01-23-2005, 04:12 PM
SNAFU SNAFU is offline
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Default new jib cranes

After having surgery this summer, and being restricted on lifting, I decided it was time to make some jib cranes to handle stuff in the shop. This is something I should have done years ago, but when you are healthy, you just don't really think about grabbing somethin and throwin it up on a table.
This one is made from 3" channel upright, and 4" channel turned back to back for the beam. (trying to use up leftover junk)
A new low profile trolley and a 150 pound air hoist that I had layin around completes the project. A dynamometer test rates it @ 375 pounds, with a small abount of deflection from the 3" channel. The 'bearings' are 4" round tubing welded to 1/2 X 4 X 8" angle and fastened to a 6 X 6 post with all thread clamped on both sides of the post. Greased her up and dropped it in place...
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Old 01-23-2005, 04:40 PM
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Very nice looking SNAFU,I've been thinking about that myself,I'll be 60 on the frist of Feb.And not as strong as I used to be.I've been looking at the HF electric 110 units.They mite do the job to.Any you did a real nice job on the one you built.
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Old 01-23-2005, 04:40 PM
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top of jib
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Old 01-23-2005, 04:41 PM
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and back of post
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  #5  
Old 01-23-2005, 04:49 PM
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This is a heavier duty model that is attached to a boring mill. It has a 1 ton dayton air hoist and was built using and old 3" line boring bar that I was saving for this purpose. Again, 4" channel welded back to back for the beam. 4 - 7/8" bolts holds it in place.
I know, it needs another coat of paint...
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Old 01-23-2005, 04:50 PM
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base of jib
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Old 01-23-2005, 04:51 PM
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top view with bearings
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Old 01-23-2005, 05:58 PM
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Quote:
I've been thinking about that myself
One of those things thats always in the back of your mind, but never have time to do...
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Old 01-23-2005, 06:59 PM
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Very nice but how much can you pick up on those bearings?
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Old 01-23-2005, 07:05 PM
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Well, the pillow block type bottomed out the dyno @ 1150# , plus thats ALL the hoist would do...
(I was standing behind the machine and holding the remote pendant when this test took place )
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