extension and retraction time

[admin]

Regulate the pressure to the Cap (Blind) end of the cylinder to some lower figure than the pressure to the Rod end. Your problem is unequal areas that gives unequal force for extend and retract, therefore uequal time cycles. A Double Rod Cylinder would also work but would be an expensive change.

[admin]

Without seeing the design, gravity may be assisting your motion in one direction and resisting motion in the other direction. Your load may also be more than this plate if it is pushing product in one direction but not the other. If your actuator is a single rod end then the different area’s (or volumes) in each direction could also cause different stroke times. A pressure regulator or flow control (typically choking the exhaust side) could be used to ‘slow’ down the offending motion.

[admin]

Curt wrote:\; Without seeing the design, gravity may be assisting your motion in one direction and resisting motion in the other direction. Your load may also be more than this plate if it is pushing product in one direction but not the other. Regardless of what the reason for the different forces, different pressures will make the actuator move quickly and smoothly. The only problem with air cylinder action comes when the load is changing while it is in motion. Go to oil in those cases.

[Author]

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