Hydro-Pneumatic Pump Units

ROEMHELD D8.600 Hydro-pneumatic pump units particularly suitable for small to medium-sized clamping and mounting devices

• Flow rate is 1.5 l/min
• Minimum operating pressure: 100 bar
• Maximum air pressure 4.5 bar
• Minimum control pressure for pneumatic valve 3 bar
• Maximum air consumption 1200 l/min intensification ratio: 1:108
• Reservoir volume: approx. 4.0
• Usable oil volume: approx. 1.8
• Hydraulic connection: G 1/4

The tandem plunger pump is built into the oil reservoir in a space-saving manner. It operates with oscillating movements and automatic stroke reversal control by a pilot-operated 4/2 valve. The stroke frequency, and consequently the delivery flow rate depend on the air pressure and the hydraulic counterpressure.

ROEMHELD D8.602 Hydro-pneumatic pump units for single and double acting cylinders

• Flow rate: 0.85 l/min
• Minimum operating pressure: 50 bar
• Maximum air pressure: 5 bar
• Maximum air consumption 400 l/min
• Intensification ratio: 1:100
• Reservoir volume: approx. 2.5 l
• Usable oil volume: approx. 2.1 l
• Hydraulic connection: G 1/4
• Single and Double-Acting versions available

This hydro-pneumatic pump unit is particularly suitable for smaller hydraulic clamping and assembly fixtures with single or double-acting hydraulic elements.