Benchtop Four Ball Wear and EP Tester for Oil and Petroleum Testing Equipment

The Four Ball Wear and Extreme Pressure Tester is designed to evaluate the friction, wear prevention, and extreme pressure properties of lubricating oils and greases under various test conditions. It is also used to determine load-carrying capacity through the load wear index and weld point methods.

The instrument operates using one rotating steel ball in contact with three stationary steel balls immersed in the lubricant sample. The upper ball has a diameter of 12.7 mm and rotates at speeds of up to 2000 RPM. The lubricant can be heated to 200°C, while an axial load of up to 1000 kg is applied through a servo-pneumatic closed-loop loading mechanism.

Friction force is measured using a digital load cell positioned for accurate measurement. An integrated PC and data acquisition software monitor and record lubricant temperature, normal load, friction force, coefficient of friction, and rotational speed.

The software-controlled loading system supports constant, progressive, and stepwise loading sequences, allowing evaluation under different operating conditions.

Manufactured by Atico Export for reliable friction, wear, and extreme pressure testing of lubricants in industrial and research laboratories.

• Determination of the coefficient of friction of lubricants
• Evaluation of wear-preventive properties of lubricating oils and greases
• Testing of extreme pressure properties
• Determination of load-carrying capacity
• Measurement of load wear index and weld point
• Investigation of lubricant performance under different loading conditions
• Study of friction behaviour and Stribeck curve characteristics

Test Configuration :

• Four-ball test arrangement
• One rotating upper ball and three stationary lower balls

Steel Ball Diameter :

• 12.7 mm

Maximum Rotational Speed :

• 2000 RPM

Maximum Test Temperature :

• 200°C

Maximum Axial Load :

• 1000 kg

Optional Low-Range Loading :

• 0 to 50 kg

Loading System :

• Servo-pneumatic closed-loop loading mechanism
• Software-controlled constant, progressive, and stepwise loading

Speed Control :

• AC servo motor

Friction Measurement :

• Digital load cell

Data Acquisition :

• Integrated PC and online data acquisition software

Data Parameters :

• Lubricant temperature
• Normal load
• Friction force
• Coefficient of friction
• Rotational speed

Interface :

• USB 3.0

Dimensions (W × D × H) :

• 20 × 24.6 × 35.4 inches
• 50 × 62.5 × 90 cm

Standard Accessories :

• 12.7 mm steel balls, set of 200
• 12.77 mm ball collets, set of 2
• Ball pot assembly with heater, set of 2
• Ball insertion and extraction fixture
• Torque wrench and hand tool set
• Connecting cables
• Data acquisition card and software
• Operating and maintenance manual
• Calibration and test reports for sensors

Optional Accessories :

• Low-temperature ball pot, down to −40°C
• Low-temperature ball pot chiller unit
• Rolling fatigue test attachment with peristaltic pump unit
• Digital scar-measuring microscope with measuring software
• KRL shear stability test bearings, set of 6
• Test balls, pack of 100

• Integrated 15-inch multi-touch control panel
• Predefined standard test protocols and customizable test programs
• Accurate speed control using an AC servo motor
• Built-in servo-pneumatic loading system with a maximum load of 1000 kg
• Optional low-range loading capability from 0 to 50 kg
• Dynamic load control for constant, incremental, decremental, and stepwise loading
• Integrated temperature control module
• Digital load cell for friction force measurement
• Integrated PC-based data acquisition software
• Real-time monitoring of temperature, normal load, friction force, coefficient of friction, and RPM
• Safety monitoring for speed, temperature, load, and friction force
• USB 3.0 port for data transfer