Help identifying the type of hydraulic cylinder used in a Rockland Quick Coupler

[MinnesotaEric]

Update on this. Bill the parts guy at Rockland tried to find the original paperwork for my quick coupler. Sadly, it seems as though that paperwork has been misfiled and lost in a sea of old company documents. Circling the wagons with Bill, he explained to me that the quick coupler did use a single, double-acting ram which I can fab but I have questions about hard-line placement and such so Bill is going to try to find me some old photos of what the thing looked like so I can go to town.

 

[aczlan]

Update on this. Bill the parts guy at Rockland tried to find the original paperwork for my quick coupler. Sadly, it seems as though that paperwork has been misfiled and lost in a sea of old company documents. Circling the wagons with Bill, he explained to me that the quick coupler did use a single, double-acting ram which I can fab but I have questions about hard-line placement and such so Bill is going to try to find me some old photos of what the thing looked like so I can go to town.

Digging on Surplus Center, they call them Tandem Hydraulic Cylinders and they carry various of them from $70 to $799 (most are under $180):

Tandem Hydraulic Cylinders | Double Rod & Tandem Hydraulic Cylinders | Hydraulic Cylinders | Hydraulics | www.surpluscenter.com

Tandem Hydraulic Cylinders,Double Rod & Tandem Hydraulic Cylinders,Hydraulic Cylinders,Hydraulics, 3" x 16" x 1.75" DOUBLE ACTING

www.surpluscenter.com

How long of a stroke do you need on each side?
How much space is there between the insides of the brackets?

You might also be able to mount a pair of short double acting cylinders and tee them together.

Aaron Z

 

[MinnesotaEric]

Digging on Surplus Center, they call them Tandem Hydraulic Cylinders and they carry various of them from $70 to $799 (most are under $180):

Tandem Hydraulic Cylinders | Double Rod & Tandem Hydraulic Cylinders | Hydraulic Cylinders | Hydraulics | www.surpluscenter.com

Tandem Hydraulic Cylinders,Double Rod & Tandem Hydraulic Cylinders,Hydraulic Cylinders,Hydraulics, 3" x 16" x 1.75" DOUBLE ACTING

www.surpluscenter.com

How long of a stroke do you need on each side?
How much space is there between the insides of the brackets?

You might also be able to mount a pair of short double acting cylinders and tee them together.

Aaron Z

At this point, I want to see a photo or two of how they did it, so I can mimic it as I already knew I could get away with a single ram, double-acting cylinder but didn't know if they used a straight cylinder or put both ends on levers connected to the horizontal pins. I really don't have a good photo of where I need to fit this, but I have an idea of how I can make it work.

 

[aczlan]

The one on the Deere 310 backhoe at work (which uses a similar setup) just has a straight cylinder that extends out both sides.
Ideally, you would want something just long enough to pull the pin a little bit into the hole on the inside when retracted, probably most anything with a 1 in rod and at least a 2 in bore should be plenty strong enough if you can put the pins in with a small sledge now.
As for connecting them together, a cylinder with a single hole through the end of the PIN so that you can slide a appropriately sized piece of pipe over it and put a pin through it would seem to be the best way to connect them, then you could have a piece of 1-8 coming out of that and going into the pin that locks the bucket in place.
I would think you would want to use a single pin to connect them together rather than having it thread on so that if there's a problem you can remove two pins and two mounting brackets to take the whole cylinder off.


Aaron Z