Bearings Noise & Vibration
Bearing Noise Is A Function of Both The Bearing Itself And The Way In Which It Is Used. Bearings Can Be Specified As 100% Noise-tested during Manufacturing When You Order. Bearing Noise Is Not Generally Influenced By ABEC Precision,But Rather By Manufacturers. Internal Quality Standards, Particularly Raceway Finish.The Vibration And Noise. Of Bearings Are Classified As Four Classed As Z1,Z2,Z3 and Z4.It Is Measured By Vibration. Acceleration Gauge.For Special Requirement,It Is Measured By Vibration.
Velocity Gauge(BVT-1). And Classified As V1, V2, V3 and V4.
Z&V: For General Applications. Standard Deep Groove Ball Bearings In Compliance With.
Z1&V1: For Applications Where There Are Primary Requirements For Vibration.
Z2&V2: For Electric Motors Or Equivalent Where There Are Special Requirements For Vibration.
Z3&V3: For Applications Where There Are Strict Requirements For Vibration.
Gauging conditions:
Low frequency band (L): 50 - 300 Hz;Medium frequency band (M): 300 - 1,800 Hz;High frequency
band (H): 1,800 - 10,000 Hz.Test Speed: 1,800 rpm