Main Application
This machine is developed for meeting lubricants research, development and producing user requirements to be a highly cost effective lab test equipment. It determines the bearing capacity of lubricant in form of sliding friction under much high point contact pressure, including maximum non-seizure load PB, sintering load PD, composite wear value ZMZ etc. This machine can do lubricant long time wear resistance test to determine the friction coefficient, record friction force and temperature curve. Electro-hydraulic servo type four ball friction test machine can be equipped optional high precision test device and can achieve the friction pair friction spot calculating screen display, measurement and record. With special accessory, it can also carry out the simulation test for end face wear and material.
Applicable Standards
GB/T12583-98 lubricant extreme pressure performance measurement method (four ball machine method)
GB3142-82 lubricant bearing capacity measurement method (four ball method)
SH/T0189-92 lubricating oil anti-wear performance measurement (four ball machine method)
SH/T0202-92 lubricating grease extreme pressure performance measurement (four ball machine method)
SH/T0204-92 lubricating grease anti-wear performance measurement (four ball machine method)
Technical Parameters
No. | Item | Technical Parameter |
1 | Test Force |
|
1.1 | Max test force | 10000N |
1.2 | Value error of below 4% max test force | ±5N |
1.3 | Value relative error of above 4% max test force | ±1% |
1.4 | Test force loading method | Weight manual loading |
2 | Friction force |
|
2.1 | Max friction force | 200N |
2.2 | Friction force value relative error | ≤±3% |
2.3 | Auto stopping when load bigger than friction force |
|
3 | Main spindle rotational speed |
|
3.1 | Main spindle rotational speed range | 300~1800r/min(stepless adjustable) |
3.2 | Main spindle rotational speed control accuracy | < 15 r/min |
4 | Time display and control range | 1s～9999min |
5 | Heating system |
|
5.1 | Heater working temperature range | Room temp~250℃ |
5.2 | Temperature control accuracy | ±3℃ |
6 | Main spindle control |
|
6.1 | Time control | Auto stopping when over set time |
6.2 | Friction force control | Auto stopping when over set friction force |
7 | Oil quantity for one test | About 10ml |
8 | Specialized standard steel ball diameter | Ф12.7 |
9 | Dimension | 1300mm×490mm×1220mm |
10 | Main spindle motor power | 1.5KW |
11 | Main accessory: wear spot measuring stereoscopic microscope |
11.1 | Measuring microscope magnification times | 25× 100× |
11.2 | Wear spot measuring range | 0～10mm |
11.3 | Wear spot measuring range accuracy | 0.01mm |
