Computer Electro-hydraulic Servo Control Four-ball Series

ET-MRS Computer Electro-hydraulic Servo Control Four-ball Series

Main purpose:

This machine is used to evaluate the loading capacity of lubricants in the process of sliding friction on a contact point under very high pressure. It meet requirement of <GB/T 3142 Lubricants-determination of load-carrying capacity(four balls method)> The above mentioned capacity including 3data to be tested: The maximum load PB under the unstuck condition, sintered load PD and comprehensive value of wearing during friction ZMZ. The machine can carry on abrasive wearing test for a long period in order to appraise friction and obtain the coefficient of friction of the material. Can be carried on when the machine is equipped with special accessories. And the computer can writer temperature-hour-out line, the friction-hour-out line when link up with the computer. The screen can demonstrate measures and records the data from the computer when the machine is equipped with the peculiar measurement device.

 

Main Technical Parameters:

Axial load test force

60N100KN

The mode of test force control

Servo valve close loop control   automatic bring to beat test force

Test force of accuracy

60400N, Less than±5N; 400N10kN, Less than±1%

Friction force

1300N

Friction force of accuracy

Less than ±2%

The rotating speed of the main   spindle

200-2000rmin

The precision of control rotating   speed

Less than ±10rmin

The range of sample temperature

Room temperature 200

The mode of data display

Computer Screen Display

Required of samples

Four-balls machine tied test   steel-ball, dia.12.7mm

The size of outline

980×750×1640mm

 


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