Slowing down hydraulic cylinder

craigco · Feb 9, 2019

I have a 2bottom Ford rollover plow. It currently has 1/2" lines on it. It spins so fast that all it does is slam it from stop to stop. Will putting on 3/8 or maybe 1/4 inch lines slow it down to a controllable speed. Even trying to feather it through the cycle is hard to do. Thanks Craig

ohiojim · Feb 9, 2019

they make inline valves, might be cheaper then hoses.

ss55 · Feb 9, 2019

Google "hydraulic flow control valve".

Jim.ME · Feb 9, 2019

If the threads are NPT, Tractor Supply often has restricted orifice NPT swivel adapter fittings in stock. If the orifice is too small you can drill it out to a larger hole. It might take a couple tries with the drill to get the speed you want. Cheaper than replacing hoses.

David G · Feb 9, 2019

I would put a ball valve in the line, that way it is adjustable.

Bob · Feb 9, 2019

If it's a standard-dimension ag-style cylinder cylinder, swap it for one with a larger bore.

grizz02 · Feb 9, 2019

here's my flow control valve on a double acting cylinder 30.00

Traditional Farmer · Feb 9, 2019

Surplus Center has what you need and they need to be on the return line to slow down the cylinder not the pressure side.

David G · Feb 9, 2019

Agreed, always restrict the return on any liquid.

rusty6 · Feb 9, 2019

The old Morris rod weeders I had did use an inline "brake" to slow down the wings when folding them down out of transport. I've heard they are good to install on a truck hoist as well so that in the even of a hydraulic failure the loaded box of grain would not drop super fast and damage the frame.

DeltaRed · Feb 9, 2019

A larger cylinder will slow the response. You can buy restrictors to slow it down. A rollover should turn slow so it doesn't destroy it self. Restict both lines. As was said,drill it out a bit if it is too slow.it doesn't take much.Some tractors have adjustable flow at the remotes.

SVcummins · Feb 9, 2019

Depending on the tractor you should be able to adjust the flow on the tractor to slow it down

Traditional Farmer · Feb 9, 2019

Also you could buy a cushioned cylinder that slows down at the end of the stroke,used those on block handling equipment.

Steve@Advance · Feb 9, 2019

They're called "directional flow control valves".

Put one in each port, gives speed control in each direction.

The valve has a check ball inside, it meters the flow out of the cylinder. Set the desired speed, a set screw locks the knob in place.

Be sure to match the size and pressure to your application.
Directional Flow Control Valve

Tractorcedric · Feb 9, 2019

I just have an elbow fitting in one of the cylinder ports that has a small orifice in it. Slows it down both ways.

Russ from MN · Feb 9, 2019

Flow control valves are usually needle valves with a set screw or a jamb nut so it stays in the desired setting.

RobCons · Feb 10, 2019

Just put some restricted orifice adapters from TSC on a FEL. Works great. They came with a 1/32 hole which was to small. Drilled it out with a 1/4 inch bit and its just about right.

Leroy · Feb 10, 2019

Any tractor I have ever seen had NO WAY of slowing down hydrolic flow except idling the engine. Any thing you would do to slow down operation would be just popping of the relief valve. Not good. Only way to slow anything down on them was just put a bigger diameter cylinder on implement. A 4" cylinder over a 2" diameter cylinder takes 4 times as much oil volume to operate so would only work 1/4 as fast. But then you would have 4 times amount of push to break something.

SVcummins · Feb 10, 2019

I guess that?s the difference between John Deere and the other tractors . I have flow control adjustments on both outlets on both tractors takes about five seconds to speed up the cylinder so fast you?ll break something or so slow it doesn?t look like it is moving

Traditional Farmer · Feb 10, 2019

I have a couple older JD cylinders that have an adjustment to slow down the cylinder at the end of the stroke.

pete 23 · Feb 10, 2019

Almost all tractors in US made after approximately 1980 have speed control on the hydraulics. It is called pressure flow compensated system. Even John Deere went to that system. The one they had since the 4010 was a one of a kind system and you could literally tap into any pressure line ahead of the SCV's and take any amount of oil you want up to capacity. It wasn't a perfect system either as we made real good money in the shop repairing those SCV's on a regular basis and the place they put the pump was just plain miserable for simple jobs up front. Also, hard to feather a touchy load and that is big reason you always saw spool valves on other tractors and earth moving equipment.

I made a lot of orfices to control flow. They were however usually for a drop of a load or header. A 1/4th inch slice of a steel bolt or shaft, small hole and slotted on one side to permit full flow one direction and restricted flow in other. I does require operating lever being held while working against the orfice and relief valve will operate as will any adjustable orfice unless you can use float in that direction like dropping a header.

SVcummins · Feb 10, 2019

They didn?t have flow control I don?t think the new generation tractors

SVcummins · Feb 10, 2019

pete It was a one of kind system that worked it was one of a kind system because it was ten thousand times better than anything else . I have never ever had trouble with the scvs on a new generation tractor . You can pull the front pump out in a couple hours even if you are slow like me . Both front pumps and all 4 scvs will probably fall right off both tractors today 😂😂

Slowing down hydraulic cylinder

Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Similar threads