7.1 - High-Speed Rolling Bearing Test Rigs with Contactless Signal Transmission for Measuring the Inner Ring Temperature
- etc2014 - 34. European Telemetry and Test Conference
2014-06-03 - 2014-06-05
- 7. Acquisitions Systems 1
- C. Brecher, M. Fey, A. Hassis - Werkzeugmaschinenlabor WZL der RWTH Aachen, Aachen, (Germany), S. Bonerz - OTT-JAKOB Spanntechnik GmbH, Lengenwang (Germany)
- 116 - 121
Main spindles and their bearings are of vital importance for the performance of machine tools and machining centers. Thus increasing demands on the machines’ productivity and reliability directly affect the required bearing properties. The development and testing of rolling bearings in the speed range up to n x dm = 2,7*106 mm/min requires highly specialized test rigs to investigate the bearings’ operating behavior. In such test rigs a customized telemetry system is used to continuously measure the test bearing’s inner ring temperature. The system uses a shaft integrated bridge circuit with a Pt1000-temperature sensor. The temperature signal is made available as an analog and digital output. This system allows for a deeper understanding of the inner ring excess temperature which is of vital importance for the speed rating of high speed rolling bearings especially of such with small contact angles.