Gear pumps KFF 2.5 ... 630 for fuels

Product catalog summary

Overview
The document provides a detailed technical description of the KF-F series gear pumps, specifically designed for use with marine fuels, including those with low sulfur content. These pumps are noted for their efficiency and durability, particularly in high-speed operations.

Construction and Components
The gear pumps consist of several key components: end cover, plain bearing bushes, gear unit, housing, shaft seal, and drive shaft end. These components are constructed from materials such as EN-GJS-400-15 for housing and cover, and steel 1.7139 for gears.

Lubricity and Testing
The pumps are designed to handle fuels with low lubricity, such as diesel fuels (MGO/DMA). The HFRR test according to ISO 12156 is used to measure lubricity, with a Wear Scar Diameter (WSD) value of up to 520 µm being acceptable for these pumps.

Technical Specifications
- Viscosity: 1.2 mm²/s to 20,000 mm²/s
- Fuel Temperature: -10 to 150°C
- Ambient Temperature: -20 to 60°C
- Working Pressure: Up to 25 bar depending on viscosity
- Driving Speed: Varies by model, up to 3600 rpm

Operating Parameters
The pumps are available in nominal sizes ranging from 2.5 to 630 cm³/rev, with a maximum pressure of 40 bar and speed ranges from 200 to 3600 rpm. Sound levels are measured at ≤80 dB(A) depending on the model and operating conditions.

Variants and Seals
The pumps come with different sealing options, including rotary shaft lip-type seals, mechanical seals, and magnetic couplings. Variants are available for different speed and pressure requirements.

Applications
The KF-F series gear pumps are suitable for a variety of applications, including lubricating oil, hydraulic systems, process and test bench applications, and fuel and metering systems.

Additional Information
For specific working conditions, consultation is recommended to ensure optimal performance. The document also includes a type key for identifying specific pump configurations.

Catalog excerpts

Gear Pumps

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1 End cover 2 Plain bearing bushes 3 Gear unit 4 Housing 5 Shaft seal 6 Drive shaft end I Description The Type KF-F transfer pumps were developed specifically for use with fuels, especially for marine fuels. These need to be critically considered, especially regarding the lubricity. And above all, those with low sulphur. Diesel fuels (MGO/DMA) exhibit low lubricity, which cannot be determined through the viscosity. Special methods are available for determining the tribological properties. The HFRR test acc ISO 12156 is a recognised method for measuring the lubricity of diesel fuels. The characteristic...

Open the catalog to page 2

Technical data I Materials Housing and cover Multi-layer friction type bearing Rotary shaft lip-type seal FKM Mechanical seal FKM Magnetic coupling I Properties of fuels Viscosity νmin = 1,2 mm2/s νmax = 20 000 mm2/s (dependent on pressure, speed and lubricity) Lubricity HFRR-test (according to ISO 12156) WSD ≤ 520 μm (meet the requirements of ISO 8217 for marine fuels) I Characteristics Nominal sizes Fixing type Pipe connection KF-F 2,5 … 25 Whitworth-pipe thread, SAE flange KF-F 32 … 630 SAE flange Fuel temperature Ambient temperature Working pressure inlet port Working pressure outlet port...

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Technical data I Operating parameters Nominal size geom. displacement Maximum pressure Speed range Sound level Remark: * Working pressure pb = perm. sustained pressure For certain working conditions, the minimum or maximum characteristics should not be used. For example, the max. working pressure is not permissible in combination with low speed and low viscosity. In such limit ranges, please consult us. Sound level: measured in dB(A) at 1 m distance / with drive motor Installation site: Works hall, quiet sound level =

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Technical data I Shaft End Seals Speed Pressure inlet port Fuel temperature Pump with rotary shaft lip-type seal and double rotary shaft lip-type seal Pump with mechanical seal Pump with magnetic coupling Pump with rotary shaft lip-type seal Type of seal 2 Pump with mechanical seal Type of seal 5 Pump with double rotary shaft lip-type seal Type of se

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1 Product 2 Nominal size 2,5 ... 630 3 Direction of rotation B right and left (Delivery direction changes) DIN flange without outboard bearing DIN flange with outboard bearing Angle foot without outboard bearing (KFF 2,5 ... 200) Angle foot with outboard bearing (KFF 2,5 ... 200) Rotary shaft lip-type seal FKM Mechanical seal with FKM secondary seals Double rotary shaft lip-type seal FKM 8 Housing and cover material GJS

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Low and high-pressure gear pumps for lubricating oil, hydraulic, process and test bench applications, fuel and metering systems. I Flow Measurement Gear, turbine and screw type flow meters and electronics for volume and flow, metering and consumption in the chemical industry, hydraulic, process and test bench technology. I Hydraulics Single and multistage high-pressure gear pumps, gear motors and valves for construction machinery, municipal vehicles, agricultural vehicles, special vehicles and truck bodies. I Valves Cetop valves for all requirements stationary and mobile applications. Pressure,...

Open the catalog to page 8

Gear pumps KFF 2.5 ... 630 for fuels

Gear pumps KFF 2.5 ... 630 for fuels

Catalog excerpts

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