KRACHT Pump Technology Series

Overview

The KRACHT Pump Technology Series is the umbrella under which KRACHT GmbH, the German family-owned fluid technology manufacturer founded in 1911 and now part of the Atlas Copco Group, groups its complete external gear pump programme. Rather than a single product, it is a coordinated family of four pump categories – transfer pumps, process pumps, hydraulic pumps and special pumps – that share a common gear-type positive displacement architecture while being tuned for very different duties, from moving fuels and chemicals in marine and renewable-energy installations to precision-dosing hot-melt adhesives and powering oil-hydraulic circuits in mobile and industrial machinery. What unifies the series is KRACHT’s external gear design philosophy: compact bodies, tight manufacturing tolerances, and a construction that delivers smooth, low-pulsation flow across a wide viscosity range, differentiating it from KRACHT’s other divisions such as valve technology or fluid measurement, which handle control and metering rather than fluid transfer itself.

Working closely with plant engineers in the region, Seven Star LLC proudly supplies the full breadth of the KRACHT Pump Technology Series to industrial, marine, oil and gas, and process customers across Oman and the Sultanate, as well as the wider GCC. Whether a project calls for a chemical-duty transfer pump, a dosing pump for an adhesive line, or a hydraulic gear pump for a mobile power pack, Seven Star LLC’s technical team helps specify the correct KRACHT category, coordinates factory lead times, and backs every unit with genuine KRACHT warranty and regional technical support.

Operating Principle

Every pump in the KRACHT Pump Technology Series operates on the external gear principle: two meshing spur or helical gears rotate inside a close-tolerance housing, and fluid is trapped in the cavities formed between each gear tooth and the housing wall as the gears turn away from the inlet port. That trapped volume is carried around the periphery of the gear set and expelled at the outlet as the teeth re-mesh, producing a flow rate that is directly proportional to shaft speed and displacement per revolution – the same positive-displacement mechanism that makes gear pumps inherently self-priming and largely insensitive to fluid viscosity changes within their design envelope.

The practical consequence of this shared principle is that all four KRACHT pump categories deliver consistent, pulsation-damped flow with minimal internal slip, even at low speeds, which is precisely why the series covers such a broad application spread. A transfer pump moving low-viscosity fuel and a hydraulic pump driving a high-pressure circuit both rely on the same meshing-gear geometry; what changes between categories is bearing arrangement, seal selection, shaft sealing, port configuration and pressure rating, each tuned to its target duty rather than the underlying operating physics common to every KRACHT Pump Technology Series category.

Engineering Design of the KRACHT Pump Technology Series

Across the series, KRACHT builds pump bodies and gear sets from hardened steel and precision-machined aluminium or cast-iron housings, with flanged or threaded connections sized to match standard hydraulic and process piping. Shaft sealing is selected per category – mechanical seals or lip seals for transfer and process duty handling fuels, chemicals and adhesives, and heavier-duty rotary shaft seals on hydraulic pumps that see higher case pressures. Bearing support is typically a combination of plain bushings and needle or roller bearings sized to the pressure and speed envelope of the specific KF or KP variant, and mounting is via SAE or DIN flange patterns that allow direct coupling to electric motors or engine power take-offs.

Where the categories diverge is in materials and sealing compatibility with the media handled: transfer pumps built for marine fuel and chemical service use elastomers and metallurgy rated for aggressive or low-lubricity fluids, process pumps intended for hot-melt adhesive dosing incorporate heated jacket options and close-clearance gear sets for accurate low-flow metering, and hydraulic pumps in the KP family are engineered for continuous duty on mineral and motor oil-based hydraulic fluids at higher operating pressures. Special pumps are custom-engineered variants developed jointly with the customer where an off-the-shelf transfer, process or hydraulic configuration does not fit the application, rounding out the KRACHT Pump Technology Series with a bespoke-engineering option.

Key Features

The KRACHT Pump Technology Series brings a consistent set of engineering strengths across all four categories:

• External gear positive-displacement design delivers smooth, low-pulsation flow with minimal internal slip across the operating speed range.
• Four distinct categories – transfer, process, hydraulic and special pumps – cover chemical transfer, adhesive dosing, oil-hydraulic power and custom fluid handling from one manufacturer.
• KF-series transfer pumps are proven in chemical, plastics, marine, fuel and renewable-energy applications where reliable low-to-medium pressure transfer is required.
• KP-series hydraulic pumps are purpose-built for oil-hydraulic circuits running mineral oil and motor oil-based fluids.
• Process pumps support precision dosing duty, including hot-melt adhesive and multi-component metering systems, where flow accuracy matters as much as throughput.
• Special pumps give access to KRACHT’s custom engineering capability for fluid-handling requirements outside the standard catalogue.
• Robust German manufacturing with hardened gear sets and precision-machined housings supports long service intervals in continuous industrial duty.
• A shared external gear architecture across the family simplifies spares planning and technical support for customers running multiple KRACHT pump categories on one site.

Industrial Applications

The KRACHT Pump Technology Series is deployed wherever industrial and marine facilities need dependable fluid transfer or hydraulic power: chemical processing plants moving corrosive or viscous media, marine vessels and offshore platforms transferring fuel and lubrication oil, renewable-energy installations circulating thermal or hydraulic fluids, adhesive and packaging lines dosing hot-melt compounds, and mobile or stationary hydraulic power units running construction, agricultural and material-handling equipment. In Oman and across the GCC, these applications map directly onto the region’s oil and gas terminals, marine bunkering operations, and the growing industrial base within the Sohar and Salalah economic zones, where transfer pumps handle fuel and process-fluid movement and hydraulic pumps power heavy mobile equipment.

With fast quotation turnaround and technical support, Seven Star LLC supplies the complete Pump Technology Series to plant engineers, EPC contractors and marine operators throughout Muscat, Sohar, Salalah and the wider Sultanate, as well as neighbouring GCC markets, ensuring that whichever category of the KRACHT Pump Technology Series a project requires, genuine hardware, correct sizing guidance and regional after-sales support are available locally rather than through a distant intermediary.

Technical Specifications

The table below compares the four categories that make up the KRACHT Pump Technology Series, based on KRACHT’s own published division structure:

Seven Star LLC also stocks and supplies individual KRACHT models from this series, including the KF80RF2-D15 transfer pump and the KP Series internal gear pump, for customers who have already identified the specific unit their application requires within the KRACHT Pump Technology Series.

Request a Quote for KRACHT Pump Technology Series

To specify the correct category from the KRACHT Pump Technology Series for your chemical transfer, process dosing, hydraulic or custom fluid-handling application, submit a formal RFQ for the KRACHT Pump Technology Series to Seven Star LLC’s instrumentation and fluid technology division. With engineering support in Muscat, Seven Star LLC coordinates factory lead times for KF, KP and special pump configurations, and provides technical datasheets and sizing support so your project team can move from enquiry to installation with KRACHT hardware and manufacturer documentation.

Browse the full KRACHT range or see more Pumps products supplied by Seven Star LLC in Oman and the GCC.