Why Do Modern Loaders Have Their Lift Cylinders Upside Down?

[rhamer]

I have noticed that the trend these days is for loaders to have their lift cylinders upside down (so to speak) that is with the ram at the bottom.

Is there any particular reason for this?

The only thing I can come up with is it makes the plumbing a bit neater.

Any thoughts

Cheers

Rohan

 

[Reg]

I have noticed that the trend these days is for loaders to have their lift cylinders upside down (so to speak) that is with the ram at the bottom.

Is there any particular reason for this?

The only thing I can come up with is it makes the plumbing a bit neater.

Any thoughts

Cheers

Rohan

It probably keeps the seal a little bit cleaner too, which MIGHT help them last longer.
{Guessing}

 

[Paul Vassallo]

The reason for the cylinder being up side down is to get a little more speed because there is less fluid to move if you take the shaft size out off the volume.

 

[herringchoker]

Whether it's right side up or upside down doesn't affect the speed. There is more force/ less speed when extending than when retracting.
I'm guessing Reg is on the right track - less chance of dirt and water getting at the seals.

 

[bobodu]

Oh yes....the speed will be faster because of less displacement. Just like a bucket with a rock in it will fill faster than one without. You will also have less lift capacity because of a smaller area on the working end of the piston.Not that this really matter..but it's true none the less.

 

[Ductape]

It not only makes the plumbing neater, it keeps all the hoses up on the loader arms and leaves the mast clear of obstructions so the loaders can be "quick attach".

 

[SPYDERLK]

Oh yes....the speed will be faster because of less displacement. Just like a bucket with a rock in it will fill faster than one without. You will also have less lift capacity because of a smaller area on the working end of the piston.Not that this really matter..but it's true none the less.

I think youve inverted your thinking. Take a closer look at the setup. Cyl extension happens by filling the end opposite the ram.
larry

 

[bobodu]

Oh...I see. Don't have any new stuff around here.

 

[Renze]

Most modern day loaders are quickly removable, and therefor have the hydraulic quick couplers on the right hand console. They run via the right boom, torque tube, left boom, to the left lifting cylinder.

With the rod facing down, the cylinder end remains relatively in the same position versus the fixed hose mounting positions.
Putting them with the rod end up, means that you need either large loops in the oil hoses to allow for the cylinder to extend (when hoses are attached to the boom) or you need to run the from the boom all the way back to the console and loop back to the cylinder.

The only loader i know, with the cylinders mounted with the rod up, is the 1970's loader of my neighbour, which is attached permanently to the tractor without quick couplers, it has an oil line under the belly of the tractor to feed the cylinder on the other side.

 

[Renze]

Oh yes....the speed will be faster because of less displacement. Just like a bucket with a rock in it will fill faster than one without. You will also have less lift capacity because of a smaller area on the working end of the piston.Not that this really matter..but it's true none the less.

connecting the rod side to the bottom side, to only pump in the amount of oil which is required by replacing the volume of the piston rod, is used on industrial loaders with parallel linkage. Z-bar linkage has a mechanical inversion so that the bucket rollback is done with the big side of the piston.

As long as you dont use a mechanical way to inverse the direction of the cylinder, it will still be lifting with the big side of the piston, no matter if you have the rod facing up or down.