The response time of a 90-degree pneumatic
actuator depends on several factors, including:
Key Influencing Factors
Actuator Size & Torque – Larger
actuators with higher torque requirements may move more slowly due to increased
air volume needs.
Air Supply Pressure – Higher pressure
(typically 4-6 bar) speeds up rotation, while lower pressure slows it down.
Valve Load & Friction – Heavy or stiff
valves (e.g., large-diameter ball valves) increase resistance, extending
response time.
Pneumatic Circuit Design – Faster response
is achieved with quick-exhaust valves, larger tubing, and minimal restrictions.
Spring-Return vs. Double-Acting –
Double-acting actuators (air to open and
close) respond faster (typically 0.5–3 seconds).
Spring-return actuators (air to open,
spring to close) may take slightly longer (e.g., 1–5 seconds) due to spring
resistance.
Typical Response Times
Small actuators (≤ 50mm): ~0.3–1 second
Medium actuators (50–150mm): ~1–3 seconds
Large actuators (≥ 150mm): ~3–10 seconds
For high-speed applications, optimizing air
supply and using low-friction valves can minimize delay.
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