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KRAL GmbH
Bildgasse 40 Industrie Nord 6890 Lustenau
Lubricating oil pumps
KRAL screw pumps from the manufacturer for lubricating oil applications.
Our screw pumps for lubricating oil have been specially developed to meet the requirements of modern machines and systems. They offer a reliable and efficient solution for the lubrication of turbines, compressors, gearboxes and other drive systems. Thanks to their robust design and the use of high-quality materials, our pumps guarantee a long service life and minimal maintenance costs.
The precise manufacturing of our lubricating oil pumps ensures a uniform oil flow and optimum lubrication conditions. This leads to improved operational reliability and efficiency of your systems and machines. Our pumps are available in various sizes and configurations to meet your specific requirements.
By using our lubricating oil pumps, you reduce the risk of machine breakdowns and expensive repairs.
At the same time, you increase the efficiency and productivity of your systems. Rely on KRAL's proven quality and technology to optimally supply your machines and maximize their performance.
The precise manufacturing of our lubricating oil pumps ensures a uniform oil flow and optimum lubrication conditions. This leads to improved operational reliability and efficiency of your systems and machines. Our pumps are available in various sizes and configurations to meet your specific requirements.
By using our lubricating oil pumps, you reduce the risk of machine breakdowns and expensive repairs.
At the same time, you increase the efficiency and productivity of your systems. Rely on KRAL's proven quality and technology to optimally supply your machines and maximize their performance.
KRAL - Your expert for lubricating oil pumps.
"Quality, innovation and speed, at all times and worldwide."
Since the company was founded, KRAL has positioned itself as a manufacturer of quality products at a fair price/performance ratio, offering customized solutions for systems, from engineering to commissioning, both locally and worldwide. Our after-sales service is also there for you after your purchase.
Convince yourself of our services. We are here for you.
Convince yourself of our services. We are here for you.
The advantages of our lubricating oil pumps.
KRAL lubricating oil pumps are characterized by their ability to continuously pump large quantities of lubricating oils of different quality and viscosity, even under conditions of high differential pressure. In addition, these pumps offer further advantages over other pump types thanks to their compact design and high flexibility.
- Reliable performance under all conditions.
Thanks to innovative technologies, our pumps achieve optimum pumping performance with minimum energy consumption. This contributes to a significant reduction in operating costs and increases the overall efficiency of your systems.
- Durability and low maintenance.
Thanks to the use of high-quality materials and advanced manufacturing techniques, our pumps guarantee a long service life and minimize maintenance requirements. This results in lower operating costs and less downtime.
- High efficiency and energy savings
The design of our lube oil pumps ensures lower energy consumption, which is not only good for the environment, but also significantly reduces your energy costs.
- Low-noise operation
Our lubricating oil pumps are designed to reduce noise to a minimum. This not only improves comfort in the workplace, but also complies with the strict noise protection regulations in many industries.
- Environmentally friendly
The efficiency and precision of our pump technology helps to minimize lubricant consumption and prevent leaks. This not only protects the environment, but also ensures a cleaner and safer working environment.
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Mechanical seal DIN 24960.
Options: Magnetic coupling, cartridge mechanical seal to API 682 or seal-less design.
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Pump housing.
Housing made of EN-GJS-400, optionally made of steel.
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Suction cover.
With radial inlet, optionally with axial inlet. Can be rotated in 90° steps.
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Overflow valve (optional).
The adjustable overflow valve ensures that the medium circulates in the event of overpressure.
Advantages of our lubricating oil pumps at a glance
- Work under the toughest conditions without loss of performance
- Minimize energy consumption, reduce operating costs
- Linear or axial conveying
- Flexibly adaptable to the specific requirements of each application
- Low maintenance requirements, long service life
- Low noise emissions improve the working environment
- Reduce lubricant consumption and leakages
- 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 lubricating oil pumps
Gearbox lubrication pumps for wind turbines
KRAL K series lubricating oil pumps provide reliable lubrication for wind turbine gearboxes to withstand the variable operating conditions of different speeds and torques. The optimum lubrication provided by our pumps ensures the protection of gearbox components, even under extreme conditions and minimum speeds. Our pumps use special materials and innovative coating processes that significantly increase the longevity and efficiency of the systems. The consistent performance of our pumps supports maximum energy yield and minimizes maintenance intervals. Rely on KRAL pumps to extend the service life of your wind turbine gearboxes and optimize their performance.
Lubricating oil pumps for generator/water turbine bearings
KRAL lubricating oil pumps from the K series are ideally suited as main and emergency pumps for lubricating the bearings of turbines and generators. They are characterized by their cost efficiency and compact design. The pumps are ideally prepared for operation at pressures of up to 16 bar and guarantee reliable performance. Our solutions offer a sustainable, low-maintenance option that is specially tailored to the requirements of generator and water turbine bearings. Rely on KRAL's proven quality and technical expertise to maximize the service life of your systems.
Main and pre-lubrication pumps in engine power plants.
For the efficient operation of engine power plants, KRAL lubricating oil pumps from the K, C or Z series offer a reliable solution for main and pre-lubrication. Depending on the specific requirements of your system, you can choose between tank-mounted versions for installation in tanks (CK/CL series) and dry pump versions for horizontal or vertical installation. Flanged models that allow direct mounting to the engine or gearbox are also available. Our pumps ensure a continuous and consistent supply of lubricating oil to optimize the service life and performance of your engines. Choose KRAL lube oil pumps for maximum operational reliability and minimum maintenance requirements in your power plant.
Lubricating oil pumps for reduction gears.
Lubricating oil pumps for reduction gearboxes ensure reliable lubrication and contribute significantly to the performance and durability of the gearboxes. Our KRAL K, L and C series three-screw lube oil pumps are specifically designed to meet the requirements of reduction gears used for speed matching between gas turbines and generators. The K series is ideal for low pressure applications, while the L series handles medium pressures and the C series is designed for high pressures. These pumps ensure efficient and continuous lubrication under all operating conditions. With KRAL lubricating oil pumps, you can rely on proven technology that has been developed specifically for your transmission systems.
Lubricating oil transfer pumps and separator supply pumps.
Our K series lubricating oil pumps offer optimum performance for transferring and supplying separators with lubricating oil in the engine area. These three-spindle pumps are specially designed for the efficient handling of all types of lubricating oil. Customers can choose between different models designed for either horizontal or vertical installation. Our pumps are available with different seal designs to ensure maximum adaptability. They are characterized by their reliability and durability, even under the most demanding operating conditions.
Further areas of application.
- Feeder and circulation for lubricants.
- Pressure boosting and circulation for lubrication systems.
- Lubricating oil supply for large diesel engines.
- Lubrication pumps for gearboxes, engines, turbines and hydraulics.
- Lubrication pumps for plant engineering.
- Cooling lubrication pumps for machine tools.
- Compressor lubrication.
- Rudder and blade adjustment.
Do you have any questions?
Lubricating oil pumps
Just send us a short message and we will be happy to answer any questions you may have.
Technical data of our lubricating oil pumps.
K series
Z 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 |
L series
C series
CK series
CL series
CG series
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.