DescriptionThe ST-PR Pitting Rig features a three-disc-on-roller configuration designed to inve
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The ST-PR Pitting Rig features a three-disc-on-roller configuration designed to investigate RCF
failure mechanisms, including macro and micro pitting in rolling-sliding contacts under both dry
and lubricated conditions. The test roller specimen is driven by a single motor, utilizing a
circulating torque mechanism with gear pairs, which eliminates the need for high-capacity drive
motors. Different Slide Roll Ratios (SRR) are achieved by selecting the appropriate gear pairs
and/or varying the diameters of the discs and test roller.
Tekniska specifikationer | |
| Size of 3 Discs: | 62 to 75 mm diameter (each) – can be varied |
| Size of Test Roller: | 25 to 38 mm diameter – can be varied |
| Load Range: | 0 to 2.000 N |
| Loading Method: | Pneumatic |
| Load Measurement: | Pressure transducer |
| Load Control: | Manual precision pressure regulator |
| Traction Force: | Load cell |
| Contact Resistance: | Lunn-Furey circuit or LCR circuit |
| Slide Roll Ratio: | 0 to ± 30 % – can be varied |
| Surface Velocity of Test Roller: | up to 12 m/s |
| Wear Analysis: | Optical Screening |
| Rotational Speed of Test Roller: | up to 6.000 rpm |
| Temperature Range: | Ambient to 150°C |
| Temperature Sensor: | k-type thermocouple |
| Motor: | 1.5 kW a.c. vector motor with liquid cooling |
| Control & Data Acquisition: | PC with COMPEND software and USLIM interface |
Automatically Controlled Parameters | |
| Rotational Speed | |
| Lubricant Temperature | |
| Provningstid | |
Manually Controlled Parameters | |
| Belastning | |
| Slide-Roll Ratios | |
| Lubrication Flow Rate | |
Measured Parameters | |
| Rotational Speed | |
| Belastning | |
| Traction (upper disc – test roller) | |
| Electrical Contact Resistance (lower disc – test roller – lower disc) | |
| Vibration Signal (uncalibrated) | |
| Temperature | |
| Provningstid | |
Services | |
| Electricity: | 230 V, 6.4 A, 1.5 kW |
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