摘要:
An effective value operation unit calculates an effective value of a vibration waveform of a hearing, the vibration waveform being measured by using a vibration sensor. An envelope processing unit performs envelope processing on the vibration waveform measured by using the vibration sensor, thereby generating an envelope waveform of the vibration waveform. An effective value operation unit calculates an effective value of an AC component of the envelope waveform generated by the envelope processing unit. A diagnostic unit diagnoses an abnormality of the bearing based on the effective value of the vibration waveform calculated by the effective value operation unit and the effective value of the AC component of the envelope waveform calculated by the effective value operation unit.
摘要:
Each of an outer ring, an inner ring, and a ball is a rolling contact member formed of a β-sialon sintered body inexpensive, capable of reliably ensuring sufficient durability, and capable of being used in an application where an imposed load is changed abruptly. The sintered body contains as a main component β-sialon represented by a compositional formula of Si6-ZAlZOZN8-Z and satisfying 0.1≦Z≦3.5, and has a remainder formed of an impurity. The rolling contact member has a Young's modulus of 180 GPa or greater but 270 GPa or smaller.
摘要:
An effective value operation unit calculates an effective value of a vibration waveform of a bearing, the vibration waveform being measured by using a vibration sensor. An envelope processing unit performs envelope processing on the vibration waveform measured by using the vibration sensor, thereby generating an envelope waveform of the vibration waveform. An effective value operation unit calculates an effective value of an AC component of the envelope waveform generated by the envelope processing unit. A diagnostic unit diagnoses an abnormality of the bearing based on the effective value of the vibration waveform calculated by the effective value operation unit and the effective value of the AC component of the envelope waveform calculated by the effective value operation unit.
摘要:
Each of an outer ring, an inner ring, and a ball is a rolling contact member formed of a β-sialon sintered body inexpensive, capable of reliably ensuring sufficient durability, and capable of being used in an application where an imposed load is changed abruptly. The sintered body contains as a main component β-sialon represented by a compositional formula of Si6-ZAlZOZN8-Z and satisfying 0.1≦z≦3.5, and has a remainder formed of an impurity. The rolling contact member has a Young's modulus of 180 GPa or greater but 270 GPa or smaller.