Powering the next era of lubricant development and quality control

The century old four-ball test remains a benchmark in the analysis of lubricant performance, especially in assessing wear prevention, extreme pressure resistance, and frictional behaviour under controlled conditions. The flagship tribology instrument, the FBT-3 Four Ball Tester, a state-of-the-art platform  from Ducom Instruments, modernises one of the most enduring and widely used lubricant test methods in the world. 

Originally developed in the 1930s, the basic design of the four-ball test, three stationary balls immersed in a lubricant sample against which a fourth rotating ball is loaded, has remained consistent, yet the capabilities of the technology have advanced significantly over time. The FBT-3 represents the latest evolution in this legacy, transforming the four-ball test into a highly automated, compact, and easy-to-use system that delivers reliable data rapidly and with minimal operator intervention. Its design integrates advanced friction and temperature sensors, automated protocols, and digital interfaces to support testing across a broad range of standardised methods, including ASTM, DIN, CEC, ISO, and IP, while also accommodating extended capabilities for emerging test needs.

Key Features and Capabilities

• Comprehensive Test Compliance: The FBT-3 supports tests for extreme pressure (EP), wear-preventive (WP), and friction coefficients in oils, greases, metalworking fluids, and other lubricant types, ensuring compliance with the industry standards.
• Advanced Automation: With automated loading and pre-configured protocols, the FBT-3 minimises manual setup, reduces variability, and enhances lab throughput, improving consistency and safety in everyday workflows.
• Patented Measurement Systems: The instrument’s precise friction and load sensing systems provide accurate friction coefficients across a wide range of conditions - with CoF values as low as 0.03 at loads of 100 N to as high as 0.25 at loads of 10000 N.
• A.I. Powered Wear Measurement: Mooha with Artificial Intelligence (A.I.) algorithm was developed to identify the wear scar edges and automatically quantify wear, to overcome human error and reduce the test variability.
•  Modularity: FBT-3 offers several additional modules such as the KRL shear stability module and 200 deg C module to ensure future readiness with the evolving requirements for high performance lubricants.

As the fuels and lubricants landscape evolve—driven by sustainability goals, electrification of mobility, and the introduction of bio-based fuels—the need for precise, adaptable testing tools has never been greater. The FBT-3’s modular design and compliance with current and emerging standards position it as an essential asset for laboratories.