DescriptionA bearing housing carries two parallel shafts. The lower shaft carries a flat profil
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A bearing housing carries two parallel shafts. The lower shaft carries a flat profile ring or roller and is connected to a d.c. servo motor. The upper shaft is carried in a spherical bearing at one end that permits rotation about the gear contact line and has a floating bearing at the other end. This allows the shaft to pivot freely in the vertical and horizontal axes.
Horizontal movement in the direction perpendicular to the upper shaft axis and is resisted by a strain gauge transducer. This gives measurements of the tangential force in the contact, which is displayed as friction force on the control unit.
| Contact Geometry: | Crossed Cylinder |
| Ball on Cylinder | |
| Block on Ring | |
| Two Roller | |
| Shaft Centre Distance: | 60 mm |
| Roller Size: | 60 mm diameter |
| Sliding Specimen: | 12.7 mm ball, roller or block |
| Speed Range: | 30 to 850 rpm |
| Equivalent Velocity: | up to 4.7 m/s |
| Slide-Roll Ratio Gears: | 0.00%, 3.33%, 5.00%, 10.00%, 15.00% & 20.00% |
| Friction Range: | 130 N |
| Friction Measurement: | Databeam (strain gauge transducer) |
| Load Range: | 50 to 750 N |
| Load Actuator: | Pneumatic cylinder |
| Load Control: | Precision pressure regulator |
| Load Measurement: | Pressure transducer |
| Bath Temperature: | ambient to 150°C |
| Heater Power: | 150 W |
| Temperature Sensor: | k-type thermocouple |
| Interface: | USB Serial Link Interface Module |
| Software: | COMPEND 2000 |
| Motor: | Brushless d.c. servo motor – 200 W |
| Automatically Controlled Parameters | Rotational Speed |
| Reservoir Temperature | |
| Test Duration | |
| Manually Controlled Parameters | Load |
| Measured Parameters | Rotational Speed |
| Load | |
| Friction Force | |
| Temperature | |
| Number of Revolutions | |
| Test Duration | |
| Sliding Speed | |
| Friction Coefficient | |
| Sliding Distance |
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