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KRAL GmbH
Bildgasse 40 Industrie Nord 6890 Lustenau
Hydraulic pumps
KRAL screw pumps from the manufacturer for hydraulic applications.
At KRAL, we focus on quality and innovation to develop high-performance hydraulic pumps that can be used in a wide range of industries. Our screw pumps offer a reliable solution for systems that need to operate under high pressure. They are ideal for applications that require precise fluid delivery, from mobile hydraulics to maritime applications and heavy industry.
Our hydraulic pumps are characterized by their robust construction and durability, even under the most demanding conditions. The special design of the pumps enables efficient and energy-saving operation. This minimizes operating costs and contributes to environmental protection at the same time.
Our hydraulic pumps are characterized by their robust construction and durability, even under the most demanding conditions. The special design of the pumps enables efficient and energy-saving operation. This minimizes operating costs and contributes to environmental protection at the same time.
With an extensive selection of models and sizes, we ensure that the right solution is available for every requirement. Our pumps are also easy to maintain and allow quick access to wear parts, which significantly reduces downtime and increases productivity.
Rely on KRAL's proven technology and benefit from a pump designed specifically for your needs. For more information on our products and individual solutions, please contact our team of experts. Optimize your processes and secure a competitive advantage with hydraulic pumps from KRAL.
Rely on KRAL's proven technology and benefit from a pump designed specifically for your needs. For more information on our products and individual solutions, please contact our team of experts. Optimize your processes and secure a competitive advantage with hydraulic pumps from KRAL.
KRAL - Your expert for pump technology.
"Quality, innovation and speed, at all times and worldwide."
KRAL has positioned itself as a manufacturer of quality products at a fair price/performance ratio since the company was founded. We offer customized hydraulic pumps from the manufacturer for systems, from engineering to commissioning, both locally and worldwide. Our after-sales service is also there for you after the purchase.
Convince yourself of our services. We are happy to be there for you.
Convince yourself of our services. We are happy to be there for you.
Advantages of our hydraulic pumps.
Our hydraulic pumps from KRAL are characterized by outstanding performance and reliability, specially tailored to the demanding needs of our customers. Here are the key benefits you can expect with our products:
- Maximum efficiency.
Thanks to innovative technologies, our pumps offer optimized performance that minimizes energy consumption and reduces operating costs. This ensures an efficient and cost-effective solution for all your hydraulic requirements.
- Durability and robustness.
Our pumps are made of high-quality materials that guarantee a long service life even under the toughest operating conditions. The robust design ensures consistently high performance and minimizes maintenance requirements.
- Low noise operation
The range of advanced hydraulic pumps are designed to produce minimal noise during operation, making them ideal for sites where noise reduction is critical.
- Environmental friendliness
With a strong commitment to sustainability, we ensure that our pumps are environmentally friendly. This includes reducing CO2 emissions and minimizing the ecological footprint of your projects.
- High power density in a compact design.
Our hydraulic pumps have been specially developed to offer an impressive delivery rate despite their compact size. This high power density makes it possible to work efficiently in space-constrained environments without compromising on pumping capacity. Our screw pumps are ideal as feed pumps for applications where space is limited but a continuous and high flow rate is required over a wide viscosity range. In addition, they are often the only possible solution in environments where performance and low noise are critical. These characteristics make our pumps an indispensable component for efficient and powerful hydraulic systems.
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Flexible connections
If the outer casing of the screw pump is made of steel, almost any position, direction, size, type and classification of the flange is possible. It can be optimally adapted to any installation situation.
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Housing variants
Depending on the operating requirements, the CG series screw pumps are available with cast iron or steel housings.
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External overflow valve
The overflow valve ensures that the liquid is diverted in the event of overpressure.
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Rotary shaft seal
The CK series screw pump is only available with a radial shaft seal. The CL series screw pump can be equipped with different shaft seals thanks to the longer spindle set. External ball bearings are also possible. This pump line is used as a horizontal or vertical foot pump or flange pump as well as a vertical container pump.
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Seal housing
Depending on the operating requirements, different shaft seals are possible for the CL series. The CL screw pump is the slide-in pump used in the CG series. The different housing options allow enormous flexibility in terms of fluid connections. An optional external overflow valve can be fitted to CG screw pumps.
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Longer spindle set
Thanks to the longer spindle set, external ball bearings are also available as an option.
Advantages of our hydraulic pumps at a glance
- Hydraulic oil can be pumped over a long period of time without exposure to air
- Conveying of large quantities with low space requirements
- Linear or axial delivery
- High efficiency
- Hardly any heat input and few return flows
- Covers a wide viscosity range
- Very quiet
- Minimal wear
- Very easy to maintain and durable
- Preserves the quality of the oil
- DIN standard Standardization
Do you have any questions? - We will be happy to help you!
We and our independent sales and service partners are available to you worldwide at any time.
Please contact us by phone or e-mail or use our inquiry form and we will get back to you shortly.
Please contact us by phone or e-mail or use our inquiry form and we will get back to you shortly.
Areas of application for our hydraulic pumps
Hydraulic pumps for thermal power plants
Hydraulic pumps from KRAL are specially designed to meet the high demands of thermal power plants and ensure reliable and efficient performance. Our robust screw pumps handle high-temperature fluids with ease and offer outstanding durability. Thanks to precise manufacturing techniques, they achieve optimum energy efficiency and help to reduce operating costs. The ease of maintenance and simple handling of our pumps reduce downtime and increase the productivity of your systems.
Hydraulic pumps for hydropower plants
Our robust screw pumps ensure continuous and low-maintenance operation, even under the most demanding conditions. They are specially designed to meet the high pressure requirements and variable flow rates of hydropower plants. With precise manufacturing technology, we offer solutions that are characterized by high energy efficiency and durability.
Hydraulic pumps as shaft lifting pumps.
With our hydraulic pumps, we offer the optimum solution for efficient lifting and moving of liquids.
With precise design and innovative technology, we ensure maximum performance and minimum downtime. Our hydraulic pumps provide a reliable solution for lifting rotors and generator shafts when starting up a turbine with a rapid pressure increase of up to 120 bar. The pumps can be supplied in submersible or dry versions as required.
With precise design and innovative technology, we ensure maximum performance and minimum downtime. Our hydraulic pumps provide a reliable solution for lifting rotors and generator shafts when starting up a turbine with a rapid pressure increase of up to 120 bar. The pumps can be supplied in submersible or dry versions as required.
Hydraulic pumps for wind turbines.
Our screw pumps offer reliable and efficient energy transfer, even under extreme conditions. With innovative technology and precise design, we maximize the efficiency of the generator in various weather scenarios.
Further areas of application.
- Rudder adjustment.
- Propeller blade adjustment.
- Hydraulic drives.
- Power supply to the hydraulic drive.
- Turbine bearing lift.
- Hydraulic pumps for plant construction.
- Load handling.
- Rotor lifting.
Do you have any questions?
─ Hydraulic pumps
Just send us a short message and we will be happy to answer any questions you may have.
Technical data of our hydraulic pumps.
L series
C series
CK series
CL series
CG series
W series
| Technical data | 15-26 | 32-54 | 55-85 | 105-118 | |
|---|---|---|---|---|---|
| Qth (1450 min-1, 0 bar) | l/min | 15-26 | 32-54 | 55-85 | 105-118 |
| Max. Pressure flange | bar | 120 | 120 | 120 | 120 |
| Temperature max. pumped liquid | °C | ||||
| with radial sealing ring NBR | 90 | 90 | 90 | 90 | |
| with radial sealing ring FKM | 150 | 150 | 150 | 150 | |
| with mechanical seal standard | 150 | 150 | 150 | 150 | |
| with mechanical seal hard material | 180 | 180 | 180 | 180 | |
| Magnetic coupling | 300 | 300 | 300 | 300 | |
| Viscosity | mm²/s | ||||
| min. | 1 | 1 | 1 | 1 | |
| max. | 100000 | 100000 | 100000 | 100000 | |
| Max. Pressure suction flange | bar | ||||
| with radial sealing rings | 6 | 6 | 6 | 6 | |
| with mechanical seal standard | 6 | 6 | 6 | 6 | |
| with mechanical seal hard material | 6 | 6 | 6 | 6 | |
| Magnetic coupling | 6 | 6 | 6 | 6 |
G series
The KRAL G series is an industrial-grade solution for pumping lubricants. The pumps are available in six sizes and therefore cover a wide performance spectrum. The low-maintenance operation is a significant advantage for continuous use.
The pumps work reliably at viscosities of up to 500 mm²/s and temperature ranges from -10 to 120 °C, optionally even up to 300 °C. The compact design allows use in space-critical applications. All housing parts can be mounted in 90° steps.
Numerous options - from cartridge seals to tank installation variants - make the series extremely adaptable. The ATEX and API 676 approvals also enable use in international projects with high safety and standard compliance requirements.
The pumps work reliably at viscosities of up to 500 mm²/s and temperature ranges from -10 to 120 °C, optionally even up to 300 °C. The compact design allows use in space-critical applications. All housing parts can be mounted in 90° steps.
Numerous options - from cartridge seals to tank installation variants - make the series extremely adaptable. The ATEX and API 676 approvals also enable use in international projects with high safety and standard compliance requirements.