help finding hydraulic motor coupler

[woodlandfarms]

What's the advantage of a chain couple over a lovejpy with rubber washer. What is the best application for a chain couple and what is it not so good for. Honestly just have never seen one

 

[Farmerford]

Woodland Farms:

I am no expert, but chain couplings are old and well proven and don't have plastic/rubber components that deteriorate with heat/cold/oil/ozone/uv. And they are cheap, I suppose because all three components (two sprockets and one chain) are used in so many other power transmission systems that they are made in large quantities on simple machines.

If poorly aligned and heavily loaded they do require lubrication because of the sliding motion of the chain rollers on the sprocket teeth. I oiled mine when it was new, wrapped a layer of dense felt around it to hold oil, and then wrapped all that in leather to keep the oil in and dirt out. I took the wrapping off after a few hundred hours, and there was no noticeable wear.

 

[greenerdreams]

You are all correct about not needing the shear pin. I do intend to have a check valve to allow overspeed or spin down when turning off the hydraulics. The only reason i need the pin is to make the mechanical connection to the input shaft since there is no key and I don't want to permanently weld anything to the shaft. I contacted tree terminator about their coupler and it is a 1.25" input shaft which seems to be kind of rare for a hyd motor versus the 1". I am leaning to the double sprocket/chain hubs and drilling the pin myself or having my local napa machine shop do it. Thanks for all the input it has been helpful.