Multi-Funktions-Tribometer

HFRR-1000 Automated Four Ball Tester

Der HFRR-Tester (High Frequency Reciprocating Rig) von Rtec Instruments wurde für die genaue Bewertung der Schmierfähigkeit, Reibung und des Verschleißverhaltens von Kraftstoffen entwickelt. Das System verfügt über eine Echtzeit-Kraft- und Hubkontrolle, fortschrittliche piezoelektrische Sensoren und einen großen Temperaturbereich, um hochpräzise und wiederholbare Messungen zu liefern.

Seine fortschrittliche Steuerungsarchitektur ermöglicht stabile Testbedingungen und eine detaillierte Überwachung des Kontaktverhaltens während der Hin- und Herbewegung. Der Rtec HFRR wurde für Zuverlässigkeit und Benutzerfreundlichkeit entwickelt und liefert konsistente Ergebnisse für Forschung und Qualitätskontrolle. Das Gerät unterstützt die Schmierfähigkeitsprüfung von Kraftstoffen gemäß den Industriestandards und hilft so den Entwicklern von Kraftstoffen bei der Optimierung ihrer Rezepturen, während gleichzeitig Leistung, Haltbarkeit und die Einhaltung gesetzlicher Vorschriften gewährleistet werden.

KEY FEATURES

Real-Time Programmable Load Control (No Dead Weights)

Closed-loop force control applies up to 10,000 N programmatically — no dead weights to stack or align. Loads ramp in steps or linearly during a test, which is essential for EP testing where load increases until the lubricant fails

EP and Wear Test With Wide Environmental Range.

One instrument runs both standard four ball tests across wide temperature range (-35°C to 400°C). In addition the additional modules allows to run KRL and 1/2 inch ball diameter 4 ball test etc. on same platform too.

Highest Precision Sensors

In-line torque, downforce, and acoustic sensors record continuously through the test. Friction and torque signals reveal the transition to failure in real time, rather than relying only on post-test wear scar inspection

Electrified

An electrified testing option applies controlled electrical conditions across the rotating four-ball contact, supporting the development of greases and lubricants for electric drivetrains

Research-Grade Flexibility Beyond ASTM Testing

Beyond standard methods, load, speed, temperature, and duration are freely programmable. Researchers use custom profiles to study additive response, temperature effects, and failure mechanisms that fixed-condition ASTM tests cannot isolate

Easy testing

Recipe-driven software automates the full sequence and processes results the moment a test ends — friction data, wear scar measurements, and test conditions compiled into a standardized report with minimal operator involvemen

More about

What is HFRR Testing?

HFRR (High Frequency Reciprocating Rig) testing is the industry-standard method for evaluating the lubricity of fuels and lubricants. By reproducing reciprocating contact under controlled load, temperature, and frequency conditions, HFRR testing measures friction behavior and wear scar formation to assess a fluid’s ability to protect critical components.

Widely used for diesel, biodiesel, renewable fuels, fuel additives, and lubricant development, HFRR testing helps optimize performance, reduce wear, and improve durability. Compliant with ASTM D6079 and ISO 12156 standards, it provides reliable and repeatable results for research, quality control, and product development worldwide.

HFRR High Frequency Reciprocating Rig for fuel lubricity, friction, and wear testing with integrated analysis software

Automated Testing and Instant Report Generation

The Rtec Instruments HFRR includes intuitive software designed to simplify testing and reporting. Users can easily create automated test recipes that control all parameters, ensuring consistent and repeatable experiments with minimal operator involvement. Once the test is completed, the software automatically processes the data and generates standardized reports including friction results, wear scar measurements, and test conditions. This streamlined workflow reduces user dependency and eliminates manual data handling. By combining automation with automatic report generation, the system improves testing efficiency, enhances reproducibility between laboratories, and provides clear documentation for both routine fuel lubricity testing and advanced tribology research

HFRR fuel lubricity tester with integrated control and analysis software for friction and wear testing

Why Electrified HFRR?

As electrification transforms automotive, aerospace, and industrial systems, understanding the impact of electrical currents on friction, wear, and lubrication has become essential. Electrical potentials can accelerate corrosion, alter surface chemistry, influence lubricant film formation, and promote micro-pitting or surface damage.

The Electrified HFRR enables researchers to apply DC or AC electrical loads, measure contact impedance, and study tribological behavior under realistic electrified operating conditions. Fully insulated and easily configurable, the system delivers valuable insights into lubricant film stability, electrical contact performance, and material durability. Best of all, it retains the same intuitive one-click operation as the standard HFRR, making advanced electrified tribology testing simple and accessible.

HFRR tribometer for electrification research, evaluating lubricants and materials for electric vehicle and e-mobility applications

Load Range	Up to 8,000 N / 10,000 N (selectable at order)
Temperature Range	−35°C to 200°C (400°C upgrade)
Humidity controller	5 to 95% RH
Speed	Up to 2,500 rpm

Interchangeable drives

4-Kugel

Der MFT-5000 4-Kugel-Tester bietet vollautomatische Extremdruck- (EP), Verschleiß- und Schmierfähigkeitstests für Öle, Fette und Additive - mit einer Laststeuerung bis zu 10.000 N, ohne Totgewichte und mit Echtzeit-Analyse von Drehmoment, Reibung und akustischen Signalen. Mehrere ASTM und ISO 4-Kugel-Standards auf einer vielseitigen Plattform.

Module Features:

Hochpräzise programmierbare Kraftregelung mit bis zu 10.000 N (keine Eigengewichte erforderlich)
Erweiterte Temperaturfähigkeit von -50 °C bis 400 °C für fortschrittliche tribologische Tests
Vollautomatische berühmte Schmierstofftests wie 4-Kugel-EP und Verschleißtests oder KRL für zuverlässige und wiederholbare Messungen
Integrierte Inline-Sensorik: Drehmoment, Schallemission, Normalkraft und elektrische Kontaktüberwachung
Vollständig konform mit den standardisierten ASTM-, DIN- und ISO-Testmethoden

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Frequently Asked Questions

Four ball tester evaluates the wear protection and extreme pressure properties of greases, oils, and additives. Three balls are clamped in a lubricant-filled cup while a fourth rotates against them under load — wear scars and failure loads quantify lubricant performance

The rotating top ball runs against three stationary balls under mild load — typically 392 N at 75°C and 1,200 rpm for one hour per ASTM D2266 or D4172. The wear scar diameter on the three lower balls, averaged over six measurements, reports the lubricant's wear protection

An extreme pressure test applies increasing loads in short, high-speed steps per ASTM D2596 or D2783 until the lubricant film collapses and the balls weld. The weld point ranks a lubricant's load-carrying capacity.

FBT-1000 supports several ASTM, DIN, ISO standards. Few of them are ASTM D2266 and D2596 for greases, ASTM D4172 and D2783 for fluids, plus BS EN ISO 20623, BS ISO 26422, CEC L-45-A-99, DIN 51350, and IP 239.

A wear test runs long at mild, constant load and measures scar diameter. An EP test runs short at escalating loads and measures the load at which the lubricant fails. Together they characterize both everyday protection and overload behavior.

Yes. The standard four-ball cup accepts greases and fluids, and the same instrument runs the grease methods (ASTM D2266, D2596) and fluid methods (ASTM D4172, D2783).

Scar diameter is measured on each of the three lower balls at two locations 90° apart. The integrated 3D profilometer additionally quantifies scar depth, volume, and morphology.

Lubricant and grease formulators, additive suppliers, quality control labs, and research groups in automotive, aerospace, and mechanical engineering use four ball testing for specification compliance and formulation development.