HYDROPNEUMATIC CYLINDER
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HYDROPNEUMATIC CYLINDER CO TYPE

Requirements The coaxial hydropneumatic governor consists of a pneumatic power section and a hydraulic control section. This device is used to adjust and standardise speed; if installed, it makes it possible to solve any space problems in the machines. The hydraulic circuit is closed, without any air-oil contact; the versions listed below are available: - adjustment with rod out - adjustment with rod in - double adjustment All versions can be provided with a speed control device: - quick approach (SKIP N.A.) - stop (STOP N.A.) Operating principle This system exploits oil incompressibility:...

General characteristics: Coaxial hydropneumatic unit Type Bore Stroke Working pressure External chamber fluid Internal chamber fluid Working temperature Circuit oil Min. and max. speed Min. actuating pressure of skip and stop valves Hole center distance according to ISO standards, on front and rear flanges Optional (0÷1000) 1-10 bar Filtered and lubed or dry air Hydraulic oil -10°C +80°C Hydraulic oil, viscosity: 2.9E – 50°C 70 – 6000 mm/min 4 bar Materials of main components: Heads Liner Calibrated and anodized extruded light alloy Stem Piston gasket Stem gasket Adjusting units Skip and...

The example above shows the coding of a double-acting CO hydropneumatic cylinder (stem out + in control), provided with speed governors, skip + stop valves, Ø50 bore and 150mm stroke. 2 : GOVERNOR ONLY 4 : GOVERNOR + SKIP 5 : GOVERNOR + STOP 6 : GOVERNOR + SKIP + STOP 1 : SYSTEM OUT ADJUSTMENT 2 : SYSTEM IN ADJUSTMENT 3 : SYSTEM IN/OUT ADJUSTMENT

Overall dimensions of the Ø50 governor:

Overall dimensions of the Ø63 governor:

Force table (N): Force table in N Cylinder consumption table in NL (1 cm of stroke): Cylinder consumption table in NL (1 cm. of stroke)

Maintenance The coaxial hydropneumatic governor is a closed circuit system, and therefore no factors can negatively affect its operation. Be careful with the hydraulic oil level, for it must never drop below the minimum level indicated by the drip stick of the auxiliary tank. Otherwise, cavitation or air bubbles inside the circuit would hinder system regulation. Top-up the oil, if necessary, only through the dedicated unidirectional valve mounted on the rear head, by means of an oil syringe. Excess oil will be ejected through a small drain hole on the tank. TECNOFLUID ENGINEERING srl Via...