A measuring cell has been developed for testing the tribological behaviour of bearing materials with Haake Mars, RheoStress 6000 and other predecessor rheometers with a normal force sensor.
The tribology cell consists of a lower and an upper part. Both are made of stainless steel. The lower measuring geometry is designed as a reservoir.
Measurement of the friction of bearing materials with and without lubricant can be performed. To measure the influence of a lubricant, the reservoir can be filled with the lubricant to be tested.
The upper measuring geometry is equipped with a flexible shaft that ensures the concentric position of a ball with a diameter of 1.27 cm in the measuring cell. Usually steel bearing balls are used, but other materials like ceramic are also possible.
To facilitate performing every test with a fresh ball as recommended, replacing the ball is a quick, simplified process.
For temperature-dependent tests between -40 and +200 °C, the lower measuring geometry can be adapted to a modified measuring plate cover for a peltier temperature control unit.
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