According ntn low noise small deep groove ball bearing manufacturing experience: affect the finished parts ntn bearing vibration and noise factors and parameters are: precision steel balls, inner, outer channel roundness, waviness and roughness, keeping frame precision and cleanliness of lubricants and ntn bearing, ntn bearing clearance. Ntn ball bearings on which the accuracy of the impact of vibration and noise, followed by the inner ring roundness and waviness and roughness, followed by the outer ring roundness and waviness and roughness, ntn bearing ntn bearing lubricants and cleaning degrees. Cage machining accuracy and ntn bearing clearance with minimal impact on noise. To this end the part of the production process, the part roundness, waviness and roughness strictly controlled.