The MRS-10D four-ball friction tester is a specialized device used to evaluate the performance of lubricants under extreme pressure conditions. It assesses the lubricant's ability to withstand high point contact pressure through sliding friction. The machine measures key parameters such as the maximum non-seizing load (P_B), the scuffing load (P_S), and the comprehensive wear value (ZMZ). Additionally, it can perform long-term anti-wear tests to determine the coefficient of friction. When connected to a computer, it can record friction and temperature curves over time, offering valuable insights into the behavior of the lubricant during testing.
The maximum non-seizing load (P_B) is determined during the test. Before reaching this load, the control software can indicate whether the maximum non-seizing load has been achieved. Once the load is reached, the software display curve confirms the maximum non-seizing load. This allows for precise measurements using a microscope, saving both time and resources. Users can also customize the control program to suit specific testing requirements.
This machine complies with various international and national standards, including:
- GB/T 12583-98: Method for testing the extreme pressure performance of lubricants (four-ball method)
- GB/T 3142-82: Method for measuring the load-carrying capacity of lubricants (four-ball method)
- SH/T 0189-92: Test method for lubricating oil resistance (four-ball method)
- SH/T 0202-92: Test method for extreme pressure performance of grease (four-ball method)
- SH/T 0204-92: Test method for anti-wear performance of grease (four-ball method)
- SH/T 0762-2005: Determination of friction coefficient of lubricating oil (four-ball method)
- ASTM D5183-2005: Test method for determining the friction coefficient of lubricating oil by four-ball wear tester
In practical applications, users can choose different measurement methods and evaluation indicators based on the specific use of the lubricant.
Here are some of the technical specifications of the MRS-10D:
| Serial Number | Item Name | Specification |
|---------------|--------------------------------------|----------------------------------------|
| 1 | Test Force Range | 60N ~ 10kN (infinitely adjustable) |
| 2 | Test Force Indication Relative Error | ±1% |
| 3 | Long-Term Test Force Indication Error| ±1% FS |
| 4 | Friction Test Range | 0 ~ 300N |
| 5 | Friction Test Error | ±2% |
| 6 | Spindle Speed Range | 200 ~ 2000 r/min (infinitely adjustable) |
| 7 | Spindle Speed Error | ±10 r/min |
| 8 | Friction Pair Temperature Control Range | Room temperature ~ 200°C |
| 9 | Friction Pair Temperature Control Error | ±1°C |
| 10 | Test Time Control Range | 1 second to 99 hours |
| 11 | Spindle Speed Control Range | 1 ~ 9999999 turns |
| 12 | Dimensions | 1160mm × 750mm × 1640mm |
| 13 | Computer Display | Friction-time, temperature-time, force-time curves |
| 14 | Net Weight | Approximately 800kg |
| 15 | Test Steel Ball | Φ12.7mm |
The MRS-10D is an essential tool in laboratories and industrial settings where accurate and reliable evaluation of lubricant performance is required. Its advanced features and compliance with multiple standards make it a versatile and powerful testing solution.
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