Hello, I bought this old crane for building a lock block wall at my ranch and im curious if anyone knows anything about it? The only information I have is that it’s a 1972 pettibone. Seller says it’s approx 10 tons. I’m looking to find information on its lifting capacity, mostly how far and how high I can lift a 2 ton concrete lock block. Don’t want her tipping over etc. Thank you.
is there not a load chart in the crane cab
Thats a cute little guy.Have a look at crane specifications on Crane Network.You might luck out and find something related to that machine. Keep it back from the edge on fresh fill if your doing lockblocks.Think of a 1 to 1 slope 10' high stay 10' back with your closest outriggers,assuming your working from the top.Lifting over the back rather than the side will work best. This will increase your radius and lower your capacity hence needing the load chart. Id set up on flat hard ground and do a test lift with the lock block.Just keep the block inches off the ground ,making sure the load is plumb to the boom tip at all times.Try your test lift over the side,but work over the back for a little more margin of safety. Capacity is generally 75% of tipping.I would be wary of structural capacity of that crane as things like the turntable attachment to the upper works might not be great and the boom may be worn thin where the extension slides.In other words dont push it,be conservative. Have some timber to crib up the outrigger pads,2 layers of new rough fir 2"X6" X3' would be fine on that crane. You will need to run a block on your hoist line 4 part would be good ,but will allow you to over lift and bend things if the machine is worn. Lock blocks are heavy and hard on limbs and fingers.If you have someone helping you set them plan your picks so your helper also understands how to stay clear until he s needed in there. These are a few considerations when playing with cranes.If you are a crane operator you know all this and more. If not practice first and be careful. Hopefully others will chime in with more thoughts that i have missed to help you out.
Looks like a Pettibone 35tk probably been derated