Development of sensor for rolling bearings

摘要

In recent years, demand has grown for highly reliable and maintenance free machinery with high efficiency, high performance, and long endurance. To achieve these demands while maintaining compactness, bearings that are designed with a sensor are necessary. NSK has been developing rolling bearings that incorporate such sensors. A few examples of our efforts at NSK include a multi-sensor that detects the rotational speed, vibration, and temperature of the bearing. We have also developed a wireless sensor that detects the vibration and temperature of the bearing, which then transmits the results to a receiver. This paper discusses these developments of NSK regarding various concepts and experimental results of our multi-sensor and wireless sensor.