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Gear pumps KF

MODULAR STANDARD PUMP

In the standard version, the housing parts are made of cast iron. The gears are made of high-strength case-hardened steel, hardened and mounted in special multi-material plain bearing bushes. In the standard version, the drive shaft end is sealed by a rotary shaft seal. All sizes are made with helical gearing. This, in combination with a special gearing geometry, results in extremely low noise levels and low-pressure pulsation.

CHARACTERISTICS

Displacement: 0.5 … 3 150 cm³/rev
Temperature range: -40 … 200 °C
Maximum pressure: … 25 bar

APPLICATIONS

> Lubricating oil supply for marine gearboxes, wind turbines and compressors
> Pre- and main lubrication of diesel engines
> Oil delivery in filter systems
> Fuel delivery

shaft seals

Single radial lip-type seal

Single radial lip-type seal with outboard bearing

Double radial lip-type seal with connection possibility for quench

Double radial lip-type seal for vacuum operation with connection possibility for quench

Mechanical seal

Mechanical seal and connection possibility for quench

Magnetic coupling

Valve Options

D-Valve

T-Valve

Universal valve

SPV-Valve / DV-Valve

Options

> ATEX version
> Stainless steel version
> Motor-pump unit (electrically / mechanically driven)
> Noise-optimised version
> Outboard bearing to absorb radial forces
> Vacuum version

MULTIPLE PUMPS

Gear pump KF + Gear pump KF

Gear pump KF + High-pressure gear pump KP

DATA SHEETS

Media Centre

Information

Phase-out / Conversion KF 3 … 6

Dear Sir or Madam,

We would like to inform you about a modification in our offering for gear pumps.

The KF3/… KF/6 pump series, which has been discontinued for years, will no longer be available in the grey cast iron version from 1 January 2024. We would therefore ask you to check your requirements in good time and, if necessary, place orders before this date. As an alternative, we offer this series in spheroidal cast iron. However, also the pumps in spheroidal cast iron will be discontinued on 1 January 2025. We therefore recommend that you plan your future requirements well in advance and place orders accordingly to ensure smooth transition.

Our dedicated team will be happy to assist you in selecting alternative pumps and in the process of changeover as well as in planning of new projects. It is our ultimate ambition to ensure that you can deal with these changes without any problems.

Please do not hesitate to contact our sales team at any time for further information, questions or support. Thank you for many years of support and your trust in our products.

Best regards
Your KRACHT team

ALTERNATIVE TRANSFER PUMPS

Contact

Pump technology

Single radial lip-type seal

Example:

for general fluid pumping

kracht-wellenabdichtung-wellendichtring-vorsatzlager

Single radial lip-type seal with outboard bearing

Example:

for the absorption of radial forces, for example through a gear

kracht-wellenabdichtung-doppel-radialwellendichtring

Double radial lip-type seal with connection possibility for quench

Example:

for crystallising media

kracht-wellenabdichtung-doppel-radialwellendichtring-vakuum

DOUBLE RADIAL LIP-TYPE SEAL FOR VACUUM OPERATION WITH CONNECTION POSSIBILITY FOR QUENCH

Example:

for vacuum applications

kracht-wellenabdichtung-gleitringdichtung

Mechanical seal

Example:

for increased upstream pressures

kracht-wellenabdichtung-gleitringdichtung-198

Mechanical seal and connection possibility for quench

Example:

for increased upstream pressures in conjunction with crystallising media

Magnetic coupling

Example:

for high inlet pressures and absolute tightness

D-VALVE D15/D25 (MOUNTED VALVE)

Gear pumps of the KF series can optionally be equipped with a directly controlled pressure relief valve (D-valve D15/D25) to protect the pump from impermissibly high pressure peaks. The valve has an adjustment facility within the permitted pressure range and is designed for a brief overflow of the discharge flow.

T-Valve T15/T25 (MOUNTED VALVE)

The T-valve is an attached, directly controlled pressure relief valve with separate tank connection. To dissipate heat, the handled fluid flowing out via the T-valve is fed directly into the storage tank. Thanks to adapted damping, the valve offers very good control characteristics and outstanding dynamics with vibration-free operation at all operating points of the pump.

Universal valve (MOUNTED VALVE)

Pumps with universal valve pump to the same pressure connection even when the direction of rotation of the drive shaft changes. This property guarantees lubrication of the gearing mechanisms in pendulum mode, for instance, in wind turbines and marine propulsion systems.

SPV-Valve / DV-Valve (INTEGRABLE VALVES)

The SPV valve is a directly controlled pressure relief valve for installation in pipelines and is used to safeguard hydraulic circuits. DV series valves are hydraulically pilot-controlled and are available as DV B pressure relief valves, DV S pressure stage control valve and DV R pressure control valves.

MULTIPLE PUMP KF + KF

The multiple pumps are designed to achieve maximum performance with the smallest possible installation space. The combination of different sizes and stages results in great variety and flexibility. Our multiple pumps are used in filter technology, in plastic injection machines, in press construction, in hydraulic systems, in steel hydraulic engineering and in rapid and creep feed applications as well as in mobile work equipment and vehicles.

Characteristics and versions:

– Opposite flow direction possible
– Hydraulically separated
– High efficiency over wide speed ranges
– High cold start viscosity at high idling speed possible

MULTIPLE PUMP KF + KP

Characteristics and versions:

– Opposite flow direction possible
– Hydraulically separated
– High efficiency over wide speed ranges
– High cold start viscosity at high idling speed possible