Cylinder symptoms can originate in the actuator, valve, pump, hose, load or machine linkage. Troubleshooting is faster when the symptom is separated into external leakage, internal bypass, insufficient pressure/flow, air, mechanical binding or excessive load.
Cylinder Drifts
Piston-seal bypass can cause drift, but valve leakage can produce the same symptom. Identify the load-holding function before blaming the actuator and never isolate an unsupported load unsafely.
Motion Is Slow
Compare actual pressure and flow with the required point. Restrictions, low pump output, cold high-viscosity oil or load differences can reduce speed. One-direction-only symptoms may be direction-specific.
Leakage Returns After Seal Replacement
Inspect the rod for scoring, corrosion or bending and check bearings and alignment. Repeated seal damage is often a consequence of another defect.
Cylinder Lacks Force
Verify pressure at the cylinder under load, real linkage geometry and piston area. Do not raise relief pressure simply to compensate for a mechanical problem or undersized actuator.
Centralina idraulica a corrente continua compatta serie EP-HPU-DC
EP-HPU-DC: unità di potenza idraulica compatta e configurabile per circuiti di cilindri alimentati a batteria o da veicoli.
Centralina idraulica a corrente alternata serie EP-HPU-AC
EP-HPU-AC: Centralina idraulica CA configurabile per sistemi di cilindri industriali fissi.
Centralina idraulica e sistema di valvole personalizzati serie EP-HPU-SYS
Il sistema di centralina idraulica e collettore valvole EP-HPU-SYS è stato progettato su misura in base al circuito del cilindro e al suo utilizzo.
Cilindro idraulico a foro passante saldato serie EP-WP da 3000 PSI
Serie di cilindri passanti saldati EP-WP con dimensioni del modello, pressione, carico di colonna e dati delle porte.
Frequently Asked Questions
Is drift always piston-seal leakage?
No; valve leakage or load-holding circuitry can look the same.
Why can retract be faster?
Rod-side annular area is smaller, so a given flow produces higher speed.
What can foamy oil indicate?
Air entrainment can contribute to noise and erratic motion.
Why can a new seal leak quickly?
Rod damage, bearing wear, misalignment, contamination or pressure spikes can damage it.
Should pressure be increased when force is low?
Not before actual pressure, load geometry, area and machine limits are verified.
Discuss a Troubleshooting Case
Send the symptom, when it occurs, pressure readings, dimensions, circuit information and damage/leakage photos.