Pneumatic Proportional Rotary Actuator

[PLCKing]

Hi, Not sure if this is the right forum for pneumatics, but it was the closest I could find on this site.

I'm trying to source out a Proportional Rotary actuator, but all I can find for rotary actuators is fully closed or fully open actuation and nothing in between.

There are some like the Honeywell Modultrol, put the problem is I need a faster open and close time (around 5 seconds of 90 º actuation time), all these ones have a 20 - 30 second actuation time. For this reason, I think a pneumatic proportional actuator, one that would have a i/p pressure controller setting the pressure to it and therefore comanding it to open partialy. I can't find anything, if anyone has any products that they used in the past that might fit this application, please let me know.

PK.

 

[israelkk]

It will be nice if you can give the torque values and sizes that the actuator needs to provide. Without those values this discussion is worthless.

 

[btrueblood]

Bray has a line of pneumatic 1/4-turn actuators with an optional proportional controller. Another mfg'r. is Moran, who adds a Tyco positioner.

 

[PLCKing]

Right I forgot, the torque required would be aroudn 75 in-lb. I'll check out those manufacturers. Thanks!