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Hardware knowledge: What are the reasons that affect bearing vibration?
The main causes of rolling bearing vibration are intrinsic vibration and vibration caused by bearing manufacturing errors and the positioning accuracy of the shaft and the seat hole.
1. The intrinsic vibration of the bearing refers to the bearing that has no shape error at all, and the elastic contact between the ring and the rolling element occurs when the load is loaded.
The unique vibration of life. Including:
(1), the rolling elements pass through vibration
(2) The natural vibration of the ferrule. Including:
a. The angular natural vibration of the outer ring moment of inertia system
b. Axial natural vibration of outer ring mass system
c. Bending natural vibration of bearing ring.
(3) Vibration caused by bearing spring characteristics: axial vibration, radial vibration, resonance of the bearing seat, etc.
2. Vibration caused by bearing manufacturing errors.
The inner and outer ring raceways and rolling element surfaces of rolling bearings have different wave-shaped processing marks along the circumferential direction-waviness, which is caused
Bearing vibration is an extremely important factor that induces noise and eccentric movement of the axis of rotation. The waviness formed by the melancholy processing traces
Vibration occurs when there is no radial clearance or when the axial load is applied to other bearings except ball bearings. In addition, the raceway wave
Bearings with a large number of ripples will also occur when radial loads are applied.
3. The radial direction of the shape and position accuracy of the shaft and the seat hole. The shape and position accuracy of the shaft and the seat hole is poor, and the ring will be flexed and deformed after the bearing is installed. The low-frequency vibration caused by this is more corrugated than the rolling surface of the bearing. The vibration caused by the temperature is still large. And improper operation during the installation process, etc. are also the reasons that affect the vibration of the bearing.