Welcome to Ji'nan Bojian Testing Machine Co., Ltd.

Bjms-10a microcomputer controlled four-ball friction testing machine is mainly based on sliding friction, which can be used to evaluate the bearing capacity of lubricants under extremely high point contact pressure conditions.It includes three indexes, namely, the maximum unclamped load PB, the sintering load PD, and the comprehensive wear value ZMZ.The machine can also be used as lubricant for long time wear resistance test, determination of friction coefficient, recording friction and temperature curve.The machine is equipped with a high precision measuring device, which can be used to measure the spot size of the friction pair, or to display, measure and record the computer screen of the friction pair.

Determination of extreme pressure properties of GB/T12583-98 lubricants (four ball machine)

Determination of loadability of GB3142-82 lubricants (four ball method)

Determination of the antiwear performance of SH/T0189-92 lubricating oil (four ball machine)

Determination of extreme pressure property of SH/T0202-92 grease (four ball machine method)

Determination of antiwear properties of SH/T0204-92 grease (four ball machine)

Serial number project name technical index

1 range of test force (stepless adjustable) 60N~10kN

2 the relative error of the test force shows a relative error of 1%

3 when the test force is long, the error of the indication is + 1%F.S

4 range of friction test 0~300N

5 error of friction test is + 3%

6 spindle speed range (stepless adjustable) 10~2000r/min.

7 spindle speed error + 5 r/min

Temperature control range of 8 friction pair at room temperature ~150 0 C

Temperature control error of 9 friction pair + 2 C

10 time control range of 1 second ~999 hours

11 spindle speed control range 1~99999999 rotation

12 test steel ball [Phi] 12.7mm