DescriptionThe STD-RCF 3 Rolling Contact Fatigue Machine is a modified version of the TE 73H Two Ro
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The STD-RCF 3 Rolling Contact Fatigue Machine is a modified version of the STD-TE 73H Two Roller Machine. It provides a three roller test configuration similar to the now obsolete GE Polymet machine. Two large diameter rollers are loaded diametrically opposed against a small diameter rod specimen. In the original Polymet design, the latter was driven. In the current design, the two outer rollers are driven, allowing much higher rotational speeds to be achieved, while at the same time substantially eliminating potential slip in the roller contacts.
The machine is designed for performing rolling contact fatigue tests under conditions of elastohydrodynamic lubrication, with well filtered lubricant feed, thus minimizing the potential for adhesive, abrasive or oxidative wear or surface propagated micro-pitting; the intended failure mechanism is thus by pressure generated, sub-surface propagated, flaking or spalling.
| Contact Configurations: | Flat Roller on Flat Roller (Line Contact) |
| Flat Roller on Crowned Roller (Elliptical Contact) | |
| Maximum Load: | 21 kN |
| Loading Rate: | 50 N/s |
| Temperature Range: | Ambient to 150°C |
| Test Roller Diameter: | 20 mm to 50 mm |
| Driving Rollers: | |
| Diameters: | 200 mm to 250 mm |
| Maximum Speed: | 6.000 rpm |
| Vibration Sensor: | Piezo-electric type with adjustable threshold sensitivity and cut-off time |
| Interface: | Serial Link Interface Module |
| Software: | COMPEND 2000 |
| Motor: | 4 kW a.c. vector motor, 2048 ppr encoder, force vent |
| Controlled Parameters | Motor speed |
| Applied load | |
| Lubricant inlet temperature | |
| Test duration | |
| Recorded Parameters | Motor speed |
| Applied load | |
| Lubricant inlet temperature | |
| Race-way temperature | |
| Rod Sample end-face temperature | |
| Vibration sensor output | |
| Electrical contact resistance | |
| Services | |
| Electricity: | 220/240 V, single phase, 50/60 Hz, 7.5 kW |
| Clean, dry air: | 4 cfm at 8 bar (120 psi) |
| Mains water and drain: | 10 l/min (typical) |
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13816217984
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