The difference between lever four ball and hydraulic four ball friction tester

The four ball friction tester is a necessary equipment for testing and research and development of lubricant products. Its function is to detect the bearing capacity of lubricants, including the three indexes, such as the maximum load free load PB, the sintering load PD, and the comprehensive wear value ZMZ. When buying the four ball friction tester, the user may ask the difference between the lever four ball and the hydraulic four ball friction tester. Which is better? Now we will briefly introduce the similarities and differences between the two.

One, the same point:

1, the test machine adopts the form of sliding friction. Under the condition of high point contact pressure, the bearing capacity of the lubricant is evaluated, including the maximum no bite load PB, the sintering load PD, and the comprehensive wear value ZMZ and other three indexes.

2, all meet the national standards and industry standards, including:

GB/T12583-98, determination of lubricant extreme pressure properties (four ball machine method);

GB3142-82, lubricant loading capacity determination (four ball method);

SH/T0189-92, lubricating oil antiwear performance test method (four ball machine method);

SH/T0202-92, lubricating grease extreme pressure test method (four ball machine method);

SH/T0204-92, lubricating grease antiwear performance test method (four ball machine method).

3. The main technical indexes are the same

(1), maximum test force: 10000N

(2) maximum friction: 300N

(3) the frequency range of spindle frequency conversion: 200 ~ 2000r/min

(4) working temperature range of heater: room temperature to 250 C

4 and two can be used as a grinding spot measurement system

Two, different points

1, loading mode is different: lever four ball friction testing machine adopts weight loading, hydraulic four ball friction tester adopts microcomputer hydraulic system loading.

2, control mode is different: lever four ball is controlled and displayed through the dashboard, hydraulic four ball is directly controlled by computer software.

3, the price is different: hydraulic four ball function is much more powerful than lever four ball, so the price is also more expensive, users can choose according to their own situation.