The CU4 gas spring is a very compact Bore Sealed gas spring with impressive force in a compact body. The maximum frequency for the spring is 100 strokes/minute.
Springs with stroke lengths over 25 mm should always be attached to the tool, using a flange or the tapped holes in the bottom of the spring. We also recommend fixing of shorter stroke springs for optimal service life.
The CU4 SP is equipped with a side port plate (SP) for applications where a sideport is needed (e.g., for use in hose systems).
|Min. operating temperature (°C)||0|
|Max. operating temperature (°C)||80|
|Force increase by temperature (%/ °C)||0.3|
|Max. charging pressure (bar at 20°C)||150|
|Max. piston rod velocity (m/s)||0.8|
CU4 SP Models
Initial Force (N)
Cylinder Diameter (mm)
Stroke Length (mm)
Total Length (mm)
Available stroke lengths
Initial force at max. pressure
|Gas link system||Length equation||
|Min. charging pressure
(bar at 20°C)
|Recommended max. strokes/min.
|CU4 SP 1000||6 - 50||10600||No||N/A||38||25||~ 100|
|CU4 SP 1800||6 - 65||18000||No||N/A||50||25||~ 100|
|CU4 SP 2900||10 - 65||29500||No||N/A||63||25||~ 80-100|
|CU4 SP 4700||10 - 65||47000||No||N/A||75||25||~ 80-100|
|CU4 SP 7500||10 - 65||75000||No||N/A||95||25||~ 80-100|
|CU4 SP 11800||10 - 65||118000||No||N/A||120||25||~ 80-100|
|CU4 SP 18300||10 - 65||183000||No||N/A||150||25||~ 80-100|