Posted by Dan in North Houston on August 28, 2016 at 19:40:44 from (73.76.33.51):
I picked up an old bat wing shredder, and the lift cylinder leaks. Upon closer inspection, I see that one of the four bolts on the end is broken off. So I figure that no wonder it leaks, with only 3 of the four bolts holding the end on. It is 3" bore and 10" stroke. But this cylinder has been used with aluminum stop collars around the rod, so that the rod has not been completely retracted in years. There has been water with the hydraulic oil lying in the cylinder bore, and it has rusted in the section of the bore where the rod has not been fully retracted. Seals are pretty ratty also, but that is an easy fix. If I am able to get the broken bolt out, that still leaves me with the problem of the bore. The surface is pitted, not just a thin layer of rust. I could use a cylinder hone or ball hone on it, but the surface is not going to be very smooth unless I remove a lot of metal. Then I'm gong to have a bore that is not uniform unless I do the whole bore. Of course, I could send it to a machine shop, but that's not very cost effective. I wouldn't mind a challenging project, but I am afraid that this could be a technical success and economic failure. What do you all think?
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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