Branch shear - hydraulic operated

[mikester]

Ive got a Precision Hy-Reach shear that is rated for 7 inch diameter trees and comes with a 5 inch diameter cylinder to do it. My tracked-loader runs at 18 gallons/minute and it still takes awhile to open and close those jaws with that big of a cylinder. You wouldnt begrudge the cycle time for onesy-twosy jobs but that cycle time really stacks up when youre running a job for hours. And yeah, its about the same cycle time for cutting 2 inch stuff with that 5 inch cylinder. Scaling a shear up to something that cuts up to 15 inches...it might not be very efficient on big jobs with smaller trees.

I hear you on the cycle time. We had a lot of ice storm damage over the past few year with large trees coming down. Chainsaw is killing my elbow so the idea of chopping the fallen tree into 8 foot lengths without getting out of the cab is appealing.

 

[Xfaxman]

After building my tree puller, I started to get this 妬tch to build an attachment for it that has a pole and a hydraulic operated shear at the end to reach (and cut) branches in the 7?24 zone of my large pine/fir trees to reduce ladder fuels.

I tried googling it for ideas and I keep getting the $25 garden variety hand shears. I DO have a Stihl pole saw but it痴 hard on my back and I have lots of trees and just about all of them are less than 6? Tractor mounted chainsaws aren稚 attractive to me due to multiple parts that can go wrong, sharpening, pinching, etc.

I致e already bought a pair of new shears designed for rescue cutters and will tinker with it to come up with a useful tool for me.

For more info, it痴 going on my recent home made tree puller that exceeded my expectations. (It can pull a 40 ft tree!) With that in mind, I知 thinking of using the same tree puller to mount a removable arm to it.

Has anyone done something like it? Thoughts?

You evidently didn't use the Custom Search at the top of the page:

Lots of threads here on TBN: Search Results - TractorByNet

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[rd_macgregor]

I think it is ambitious to want a 15" capacity tree shear to use on limbing. These are pretty heavy units and the bigger they are the heavier (eg, Sidney Attachments HTC Plus 16" shear is 1300#). Even on perfectly level ground, consider opportunities for side-forces to flip over your tractor, skid steer, etc. when cutting large limbs at 15' to 20' up...unless you intend using it on a backhoe with the outriggers down for each cut.

Also, don't expect to use a tree shear for harvesting saw logs. My understanding is that the crushing action of the shear tends to create splits in the wood. This is fine for burn pile, paper pulp or firewood, but creates too much waste for saw logs.
I think a lighter limbing shear with maybe 7" capacity on a telehandler would be useful for overhead fence line and trail clearing and somewhat limited ground-level work. Sadly, no one tool will do everything.

 

[seasled]

Greenlee Fairmont Hydraulic Orchard Pruner

 

[Dave M7040]

Someone on a forum recently was complaining that his bucket mounted pole saw, which he powered off a rear remote, would stop every time he adjusted the bucket to position the saw.

Just a factor to consider in such a home made implement. His system was open center and the rear remotes were plumbed after the FEL through a power beyond port on the FEL valve.

When the saw stopped it would often jamb.

Dave M7040

 

[majorwager]

This unit reaches 33 ft, requires 14 gpm @ 2000 psi. Probably need to rent skid steer to operate. I did see a reasonable hyd power unit recently that provided 20 gpm. Could partner w/ a tree service?

 

[kthompson]

Seems like a shear would work great for branches. The trouble I see for a saw is it could get pinched by a large branch, then what do you do if it's 20 feet up? I've cut branches with a hand saw. You have to cut from the top so it doesn't pinch, then the branch bends down and tears down the side of the tree, unless you cut up from the bottom first. A shear would just be a giant pair of hand clippers, which I use all the time.

Hand saw and a power blade cut at totally different speeds. All I know the people who cut right of ways here use saws, not aware ever seeing a shear being used. I have used chain saw on pole saw with very good success.

 

[Jim Timber]

You could run the saw off a PTO mounted pump. Then you'd have flow for both the saw and the loader.