Technical Specifications

• Speed: 300 to 3000 rpm (High speed option is available)
• Load: 100 to 10,000 N
• Friction Force: 0 to 200 N
• Friction Torque: 0 to 16 Nm
• Temperature: Up to 90 deg C (200 deg C is optional)

Options

• Pneumatic loading
• KRL shear stability tester attachment
• Rolling fatigue attachment
• Thrust washer attachment
• High temperature ball pot (ambient to 200 °C)
• Image acquisition system

Test Standards

EXTREME PRESSURE PROPERTIES

• ASTM D2783: Standard Test Method for Measurement of Extreme-Pressure Properties of Lubricating Fluids (Four-Ball Method)
• ASTM D2596: Standard Test Method for Measurement of Extreme-Pressure Properties of Lubricating Grease (Four-Ball Method)
• IP 239: Determination of extreme pressure and anti-wear properties of lubricating fluids and greases - Four ball method (European conditions)
• DIN 51350-2: Testing of lubricants - Testing in the four-ball tester - Part 2: Determination of welding load of liquid lubricants
• DIN 51350-4: Testing of lubricants - Testing in the four-ball tester - Part 4: Determination of welding load of consistent lubricants
• ISO 20623:2017: Petroleum and related products — Determination of the extreme-pressure and anti-wear properties of lubricants — Four-ball method (European conditions)

WEAR PREVENTIVE PROPERTIES

• ASTM D4172: Standard Test Method for Wear Preventive Characteristics of Lubricating Fluid (Four-Ball Method)
• ASTM D2266: Standard Test Method for Wear Preventive Characteristics of Lubricating Grease (Four-Ball Method)
• ASTM D5183: Standard Test Method for Determination of the Coefficient of Friction of Lubricants Using the Four-Ball Wear Test Machine
• DIN 51350-3: Testing of lubricants - Testing in the four-ball tester - Part 3: Determination of wearing characteristics of liquid lubricants
• DIN 51350-5: Testing of lubricants - Testing in the four-ball tester - Part 5: Determination of wearing characteristics for consistent lubricants

SHEAR STABILITY OF OIL*

• CEC L-45-A-99: Viscosity Shear Stability of Transmission Lubricants (KRL Taper Roller Bearing Rig).
• DIN 51350-6: Determination of shear stability of polymer-containing lubricating oils by the Shell four-ball tester.

FATIGUE PROPERTIES AND THRUST WASHER TEST*

• IP 300: Determination of rolling contact fatigue failure - modified four ball tester machine method.
• ASTM D3702: Standard Test Method for Wear Rate and Coefficient of Friction of Materials in Self-Lubricated Rubbing Contact Using a Thrust Washer Testing Machine

* Denotes optional modules

Applications

• Determine extreme pressure (EP), wear preventive (WP), frictional and fatigue properties of oils and greases.
• Test the quality of produced oil and verify the quality of oil procured from suppliers.
• Test wear preventive properties of nanoparticles derived from carbon metal oxide, sulfides and nanocomposites.
• Compare and estimate the deterioration of lubricant quality by comparing fresh and used oil.
• Test polymeric viscosity modifiers to achieve better shear stability and minimize viscosity loss.
• Lubrication efficacy of biodegradable / vegetable oils compared to mineral based oils.

KRL SHEAR STABILITY ATTACHMENT

The Ducom four ball tester TR-30L series can be equipped with the KRL shear stability attachment to determine viscosity loss of lubricants according to the CEC L-45-99 test standard. Ducom offers also a KRL standalone tabletop tribometer.

We also offer a stand alone KRL Shear Stability Tester (SST-1), especially designed for users interested in long duration shear stability tests.

 

ROLLING CONTACT FATIGUE (RCF) OPTION

The RCF option was designed to asses the tendency of lubricants to produce fatigue failures in rolling contacts. This attachment includes a recirculation system, a specialized ball pot, a pitting detector and a software update.

 

HIGH SPEED OPTION

The High Speed Option enables high speed operation of the TR 30 Series tester, by tripling its maximum speed. This option is a useful addition to the Rolling Contact Fatigue Attachment since it can reduce the test time by up to 70%. This option is also useful for customized test plans requiring high sliding speeds.

 

 

AUTOMATIC SCAR PREDICTION

THE POWER OF ARTIFICIAL INTELLIGENCE (A.I.)

Every Four Ball Test is concluded by measuring the wear scar on the test specimens. It is the most manual aspect of any four ball testing and is prone to user errors and interpretation. Difficulty in visual observation of scars further increases the test variability.

With our proprietary automatic scar prediction software, you can now harness the power of Artificial Intelligence (A.I.) to automatically make consistent and precise wear scar measurements, overcoming the human error and greatly reducing the test variability.

*Requires MOOHA

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