low friction cylinders

[Iena]

Good morning to all
I need to design a "ballerino" cylinder controlled by pneumatic pistons and that, as a main feature, must have maximum sensitivity.
excluding the mechanical part, to which I have already thought, I remain the problem of the pneumatic part, that is the cylinders.
these must have a detachment friction, and dynamic, as low as possible. Considering that the allotment is about 40 thing 250 and the working pressures vary from 0.5 bar to 7/8 bar, who knows how to recommend the right cylinder for this type of application?
thanks in advance

 

[Fulvio Romano]

tire cylinders must at least have seals...I don't think there are "low friction"

 

[Iena]

tire cylinders must at least have seals...I don't think there are "low friction"

You're wrong, almost all the building houses propose the series to "low friction" unfortunately do not have the performance from me searched, at least the ones I found, in fact that is why I ask help to the forum. :wink:

 

[cacciatorino]

Considering that the allotment is about 40 thing 250 and the working pressures vary from 0.5 bar to 7/8 bar, who knows how to recommend the right cylinder for this type of application?
thanks in advance

eistono of the smc cylinders without seals (obviously with small threading), see the series: m2.

Perhaps you will need to use a servovalve to keep the pressure constant in the cylinder chamber, consider that in the presence of large excursions the pressure in the cylinder chamber may suffer severe fluctuations due to the large volume change. The alternative is to use a large storage cylinder that makes the volume change in the cylinder chamber negligible compared to the total volume of the circuit.

Or use the old gravity force system!

 

[Iena]

eistono of the smc cylinders without seals (obviously with small threading), see the series: m2.

Perhaps you will need to use a servovalve to keep the pressure constant in the cylinder chamber, consider that in the presence of large excursions the pressure in the cylinder chamber may suffer severe fluctuations due to the large volume change. The alternative is to use a large storage cylinder that makes the volume change in the cylinder chamber negligible compared to the total volume of the circuit.

Or use the old gravity force system!

the system of gravity grandmother with the addition of weights, is the best, I do not say ironically. we with the dancer we direct a svogitore, figure that to make the tests I by-passed the dancer is I brake the coil with a band, that is the system of the grandmother and it worked very well. the problem is that a very expensive plant, commanded by a hundred sevomotors, put the dancer in gravity or the band....insomma... we do not really make a beautiful figure:biggrin:
returning to the problem, the dancer works at constant pressure, this varies only if the operator changes the type of material to be treated. How do you mean with the servovalve? post me a box

 

[bgm]

connected to www.metalwork.itconsult the good new December (12^).
Maybe find something interesting.

 

[max2]

the festo can provide low friction pneumatic cylinders. that I know is good for dancers of good sensitivity

 

[Focus]

the festo can provide low friction pneumatic cylinders. that I know is good for dancers of good sensitivity

exact, the dnc series with s11 feature, has operating pressures starting from 0.1 bar.

Hi.