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About bearing vibration

by:JNSN     2021-12-13
What are the main factors affecting bearing vibration? The vibration system composed of stiffness, flexibility, quality, damping, etc. determined by the bearing structure design parameters will produce vibrations compatible with its mechanics under operating conditions. Vibration caused by deviation in manufacturing process, the smaller the deviation, the smaller the vibration. The roundness, waviness, and surface roughness of the steel ball surface are the factors that have the greatest impact on vibration among the bearing parts, followed by the shape error and surface roughness of the inner and outer ring channels, and again the bearing cleanliness and lubricant Quality etc. Operating conditions such as installation conditions, speed, direction of axial load, magnitude, etc. What are the physical quantities that characterize bearing vibration? The physical quantities that characterize bearing vibration include vibration displacement, vibration velocity, and vibration acceleration. What is the vibration level of the bearing and its scope of application? Bearing vibration (acceleration) is divided into four levels: Z, Z1, Z2, and Z3; bearing vibration (speed) is divided into four levels: V, V1, V2, and V3. Class Z and V are suitable for bearing manufacturers to inspect the vibration of deep groove ball bearings within the scope of the standard; Class Z1 and V1 are suitable for the inspection of finished bearing products that have general requirements for bearing vibration; Class Z2 and V2 are suitable for Y series motors and Other motor bearings with corresponding requirements; Z3 and V3 grades are suitable for strict requirements on vibration. This level has the international advanced level.
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