[TTalma]

I am making a new fixture to hold parts. I am trying to make it self feeding. I have a pneumatic cylinder that clamps the part but it opens and closes with such force that it's breaking the fixture.

The cylinder is about 1.25" in diameter and has a 4" stroke. I have 90 lbs of air pressure on my system.

I had some devices that I thought were for slowing down the air. But they only seem to delay the action.(see pics)

What do I need to slow down the open/close speed of the cylinder? If I have the right thing what am I doing wrong?

[Jim Dawson]

A flow control as you have shown is the correct device. These should control the flow out of the of the cylinder, and work best if placed directly onto the cylinder port. But can be anywhere in the line.

[CitizenOfDreams]

What Jim said.

Some air cylinders have built-in flow regulators and/or air cushions to slow the piston down at the end of the stroke.

[TTalma]

A flow control as you have shown is the correct device. These should control the flow out of the of the cylinder, and work best if placed directly onto the cylinder port. But can be anywhere in the line.

Thanks, It appears I have this hooked up incorrectly, I currently have it in line with the input in to the valve, and about 8" before the valve. The total length of hose after the flow control is about 18" to 20".

I will change it so I have a flow control right by the connectors to the cylinder

- - - Updated - - -

What Jim said.

Some air cylinders have built-in flow regulators and/or air cushions to slow the piston down at the end of the stroke.

Thanks, If moving the flow control doesn't work I will look into one of these cylinders.

[Jim Dawson]

Also note that flow controls are directional, look at the the ''controlled flow'' direction. The other direction is free flow. Normally there is an arrow showing the controlled flow direction.

[mactec54]

Thanks, It appears I have this hooked up incorrectly, I currently have it in line with the input in to the valve, and about 8" before the valve. The total length of hose after the flow control is about 18" to 20".

I will change it so I have a flow control right by the connectors to the cylinder

- - - Updated - - -



Thanks, If moving the flow control doesn't work I will look into one of these cylinders.

If it does not work well enough, then you can make a restrictor plug to put in the output side this just seats in the cylinder output port and has a smaller hole in it, which you can adjust to get the right flow and then fine tune with the flow control valve, you can make it in any material and can be put in the line also

[TTalma]

Thanks for all the help, I added a second flow restrictor, and now have them right by the cylinder inlet/outlets. The solved the issue, after a little adjustment the cylinder is moving nicely!