SRV Tester Overview
Main Features:
- 10 µm – 2.8 mm stroke / 0.1 mm to 5 mm stroke
- Up to 300/500 Hz oscillating frequency
- High Resolution Piezo Sensors
- Electromagnetic Coils
- Room to 350°C (optional -40°C, 800°C) temperature
- 3000 N down force
Rtec SRV test system measures friction and wear of lubricant, oil, grease, and additives in linear oscillatory motion. Generate data compliant to several ASTM, DIN, ISO standards. Test collected samples from field or for research purpose.
The SRV tester comes fully automated and computer controlled. The setup is easy to calibrate and comes with standard oil and samples. It not only runs several standard test methods but also allows to create new custom methods for future petroleum product standards.
SRV Test Machines Like No Other
The test method covers studying tribology between two contacting surfaces subjected to high frequency linear oscillation.
Down Force Control
Real time down force control.
Voice Coil
Electromagnetic actuator to impart linear reciprocating motion. Dependent on the test optional additional coils are available to double the friction force range.
High Accuracy Position Control
The most accurate and precise displacement control in the market. Up to 1nm resolution and micron level of accuracy.
Environmental Chambers
The wide temperature range standard room to 180°C (from -40 to 400/800 °C available). Close loop temperature control.
Flexure Design -Unmatched Waveform Control
Magnetic flexure design prevents friction of rolling or bearing. The coil controls the stroke by monitoring smallest of increments of waveform change.
Piezo Friction Measurement
The tester comes with piezo sensors to measure real-time friction at high frequency. Ultra low noise amplifiers allows detection of minute changes in friction.
Additional In-line Sensors
Acoustic emission to detect onset of cracks. ECR measures surface resistance changes to gain more insight on the film thickness.
Liquid Containers, Sample Holder
Customizable liquid and sample holders for standard and non-standard tests.
Features
Next Generation
With stroke control from 10 µm, the Rtec Instruments SRV tester simulates many test conditions that are not possible using any other commercially available tester.
Traceable Friction Force
Calibrated friction force sensors to NIST traceable standards. This ensures correct absolute friction values.
Platform Rigidity
Vibration dampening frame, symmetrical design, and rigid samples holders yield a high system stiffness. This high rigidity facilitates the high repeatability of data and wear marks with ease.
Reliability On Long Runs
The unique flexure suspension guides the magnet assembly without contact or lubrication. The design eliminates performance degradation over time. It delivers near maintenance free operation for a long time.
Stroke control
Ultra precise stroke control allows simulation of many applications. Including studying oil starvation areas and fretting regimes.
Choose Your Model
Choice Depends On Multi Function vs. Single Function
Single Function Tribometer SRV Tester
Dedicated SRV tester for reciprocating friction and wear analysis
SRV Test on Multi Function Tribometer MFT-5000
SRV test on the MFT-5000 allows several other friction, tribology, wear tests on the same platform.
Data and Analysis
Custom and ASTM Standard Tests Available
Ball Wear Mark and Volume Wear
3D wear mark of ball surface after the test.
Real Time Friction and Downforce
Real-time friction and down force data
Real Time Stroke Control
Real-time down force and stroke control.
Table 1: COF values at different time intervals
| Test | COF_15 min | COF_30 min | COF_90 min |
|---|---|---|---|
| Test 1 | 0.061 | 0.0588 | 0.0589 |
| Test 2 | 0.060 | 0.059 | 0.061 |
Table 2: Wear Scar Diameter (mm)
| Specimen | Test 1 | Test 2 |
|---|---|---|
| Ball Horizontal | 0.4780 mm | 0.4233 mm |
| Ball Vertical | 0.4978 mm | 0.4083 mm |
| Disk Horizontal | 1.348 mm | 1.336 mm |
| Disk Vertical | 0.4273 mm | 0.4380 mm |
Need Versatile SRV Testing?
Check out the Multi Function Tribometer SRV model.
Need HFRR Testing?
Take a look at Rtec’s Bench Top HFFR Tester, the FFT-M