The Four Ball Friction and Wear Testing Machine / Four-ball tribometer is used to determine the friction and wear properties of lubricant, including oil and grease, under varying load conditions. It accurately assesses the load-bearing capacity of lubricants through several key metrics: maximum non-seizure load (Pb), sintering load (Pd), and comprehensive wear value (ZMZ). This machine allows for long-term wear tests without compromising the precision of the Pb measurement, even after multiple Pd tests. It can also measure the coefficient of friction while recording friction force and temperature curves. For enhanced precision, the system can be equipped with high-accuracy measuring devices to calculate and display wear scar diameters on-screen. With specialized attachments, these friction and wear testing machines can perform end-face wear tests and simulate material behavior under specific conditions.

Application: 

It applies to major petrochemical, iron and steel metallurgy, transportation and other industries and institutions of higher learning field. Can be used at ambient temperature or high temperature, upto 250 degree, and can execute time pre-selection, friction and temperature advance setting.

 Main features: 

3.1, Computer control and display system, real time display the load, friction force, RPM, rotate cycles, time, temperature.

3.2, Load cell to measure the load/force.

3.3, High precision microscope, 25X multiple times.

3.4, High temperature friction pairs, and ambient temperature friction pairs.
3.5, protection function, friction force, load, rotate cycles times etc.,

3.6, Real time record force-time and load-time test curve, high sampling rate.

3.7, When the load reach the higher limit, will automatic trigger overload protection.

Standard: 

ASTM D2266 "Standard Test Method for Wear Preventive Characteristics of Lubricating Grease (Four Ball Method) “

ASTM D4172 “Standard Test Method for Wear Preventive Characteristics of Lubricating Fluids (Four Ball Method)”

ASTM D2266 "Standard Test Method for Wear Preventive Characteristics of Lubricating Grease (Four Ball Method) “

ASTM D4172 “Standard Test Method for Wear Preventive Characteristics of Lubricating Fluids (Four Ball Method)”