miniBOOSTER® Hydraulic Pressure Intensifiers

miniBOOSTER® pressure intensifiers are used in hydraulic systems where the available system pressure is insufficient, e.g. for the required clamping force. In confined installation conditions, they enable the designer to use smaller, space-saving cylinders or other hydraulic components. When using small systems (power packs), high-pressure units are not required.

• Examples for oil as a medium: clamping, stamping, ejecting, brake boosting, concrete breaking, bolt stretchers, presses, etc.
• Dynamic applications: injection molding machines, mobile hydraulics, maintenance equipment for rail vehicles, test benches, etc.
• Examples of water as a medium: mining, food industry, firefighting, offshore technology, rescue shears, etc.

• No need for expensive high-pressure pumps
• Cost savings on piping
• Convert low pressure into high pressure with virtually no energy consumption and minimal heat generation
• Long service life
• No rotating parts
• Low weight, high efficiency

Single-acting pressure boosters are used for clamping devices in machine tools where different work steps – such as roughing, finishing, or grinding – are performed with different clamping pressures to prevent distortion. Directly proportional pressure intensifiers correspond in all dimensions and mode of operation to the data sheets for the standard miniBOOSTER®. They differ externally only in their labeling.

Inlet pressure: 20 bar to 200 bar

Outlet pressure:

• Up to 800 bar (HC1 / HC2 / HC 4 / HC6 series)
• Up to 2,000 bar – higher on request (HC7 / HC8 series)
• Up to 5,000 bar – higher on request (HC9 series)

The HC2D is a double-acting, high-throughput unit that can achieve a flow rate of up to 11.0 l/min at the high-pressure end. Like other miniBOOSTER® models, the HC2D boosts the inlet pressure to a higher outlet pressure and automatically compensates for oil consumption to maintain a constant high pressure. The outlet pressure is adjusted by regulating the inlet pressure. Measured by its delivery rate, the HC2D is a compact device weighing 3.8 kg.

The HC6D is a double-acting, high‑flow unit capable of delivering up to 56.0 l/min at the high‑pressure end. It increases the inlet pressure to a higher outlet pressure and automatically compensates for oil consumption to maintain a stable high pressure. Considering its delivery performance, the HC6D remains a compact solution with a weight of just 20 kg.

• Inlet pressure: 20 bar to 200 bar
• Outlet pressure: up to 800 bar

This pressure booster is used for hydraulic systems designed on a modular basis. The connection diagram based on NG6 standards allows installation without piping. If the pressure intensifier is placed in the immediate vicinity of the application, fast response times in pressure build-up are guaranteed. Use in accordance with the NG6 standard requires the maximum operating pressure to be reduced to 500 bar. NG 10/16/25 on request.

Inlet pressure: 20 bar to 200 bar (lower pressures on request)

Outlet pressure:

• 20 bar to 500 bar with M5 screw fitting (standard NG6 system)
• 20 bar to 800 bar with M6 screw fitting (deviation from NG6 system)

The HC3‑D and HC3‑F pressure intensifiers are intended for hydraulic systems built in modular design. With the miniBOOSTER® connection diagram, these units can be installed without any piping. When positioned close to the application, the HC3‑D and HC3‑F ensure rapid pressure build‑up and fast response times. Use in accordance with the miniBOOSTER® connection diagram requires the maximum operating pressure to be reduced to 500 bar.

Inlet pressure: 20 bar to 200 bar

Outlet pressure:

• 20 to 500 bar with M5 screw fitting
• 20 to 800 bar with M6 screw fitting

The HC5 pressure booster is used when high pressure is required on both sides of a double-acting cylinder or on both sides of a hydraulic swivel device. This eliminates the need for directional control valves in the high-pressure system. Typical applications include cutting and spreading devices, among others.

• Inlet pressure: 20 bar to 200 bar
• Outlet pressure: up to 800 bar

The HC2D2 is a self-priming two-media booster with a flow rate of 3l/min on the high-pressure side. Like other miniBOOSTER® models, it automatically compensates for oil consumption to maintain high pressure. In relation to its flow capacity, the HC2D2 is a compact device weighing only 4.15 kg.

The HC6D2 is the stronger version of the HC2D2 series. It is a self-priming unit for two media that can achieve a flow rate of up to 41 l/min at the high-pressure end. Measured by its delivery rate, the HC6D2 is a compact unit weighing 24 kg.

• Inlet pressure: 20 bar to 200 bar
• Outlet pressure: up to 800 bar
• Design: available only as A-variant; outlet screw max. 10 bar pressure

This pressure booster pump is used in battery-powered or pallet applications. The HC2P consists of a gear pump and an HC2 miniBOOSTER® pressure intensifier. As with the other pressure booster models, the oil is compressed on the high-pressure side. The high pressure is adjusted by controlling the low-pressure side using the gear pump. The default setting for the gear pump is 50 bar.

• Inlet pressure: 0.4 bar to 2 bar (on the pump suction line)
• Outlet pressure: max. 650 bar (higher on request)

This portable system is perfect for mobile attachments to fully utilize the pump capacity for the rapid traverse function of the hydraulic cylinder(s) and to increase the pressure in order to generate high pressures (breaking/clamping) when required. Typical applications include mobile attachments (cutters, crushers, shears) for injection molding machines and hydraulic presses.

Features:

• Extremely robust; high flow rate and high pressure
• Delivered fully assembled and factory-tested – ready for immediate installation
• Available in versions with different amplification factors
• Various connection options and available with a range of fitting options

The miniBOOSTER® M-HC7 portable pressure booster system is designed for demanding industrial applications. It can be used in conjunction with any low-pressure device (20 to 200 bar) that delivers a volume flow of at least 2 l/min, achieving output pressures of up to 800 bar. The M-HC7 is equipped with a 10 µm filter and a visual filter status indicator to increase service life and prevent downtime.

Time is money: The system can deliver up to 15 l/min and is designed to supply full capacity as soon as a pressure boost is required. This minimizes cycle times. Many applications require extraordinary precision, which is why the M-HC7 has an easy-to-read pressure gauge with a diameter of 4 inches (approx. 10 cm), which enables an accuracy of 1 % (up to 10 bar).

Typical applications for the miniBOOSTER® M-HC7 include bolt tensioners, lifting systems, railway applications, crimping/cutting systems, and rescue equipment. Weighing only 10 kg and featuring a practical carrying handle, the device can be used anywhere. The M-HC7 works with an existing hydraulic low-pressure supply. No additional tools are required. All controls integrated into the device enable easy operation and reliable performance.

Inlet pressure:

• 20 bar to 200 bar (M-HC6 /M-HC7 series)
• 20 bar to 350 bar (M-HC7 series)

Outlet pressure:

• Max. 650 bar (higher on request)
• Volume (Q) up to 100 l/min.