The smooth maintenance of motorized spindle bearing light noise

Motorized spindle bearing raceway sound in operation, the roller rolling on the surface of the raceway and issued a continuous sound, it is all normal motorized spindle bearings will attack characteristic sound. Ordinary bearing ring raceway is combined with other sounds. Ball bearing raceway is irregular, frequency above 1000 hz, its main frequency does not change with speed, but its total sound pressure level increases with speed to speed up. Raceway large bearings, the rolling sound of sound pressure level decrease with the increase of the viscosity; The raceway small bearings, the sound pressure level in the viscosity increases to about 20 was/s above, from decreased to increase somewhat. And the rigidity of the bearing, the greater the raceway of the lower the total sound pressure level. Such as radial clearance is too small, the total sound pressure level and race master frequency will increase sharply with the decrease of radial clearance. Control rolling way voice way: choose low noise electric spindle bearing is bearing waviness is very small, that is, using carefully selected. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise. Rushing sound of the rolling element and its control measures larger models of ball bearings or cylindrical roller bearings under pure radial load speed, due to the centripetal force is small, roller in the impact load of rolling body will adhere to the frame or race and making noises. But along with the progress of the rotational speed, the noise will disappear. The impact noise control measures include: roller properly reduce the radial clearance, use with reasonable structure and data with kindliness insist on motorized spindle bearing. Motorized spindle bearings in the rotation, bearing wear and failure from time to time due to friction. Obstacle motorized spindle bearing rotating by rolling friction, sliding friction resistance and smooth of three kinds of agent of friction. When the rolling element bearing rolling on rolling rolling friction; Adhere to the guide roller in the surface, stick to stand guard guide surface and roller bearing in the roller end face and ring guard attack on sliding friction; Smooth friction agent, smooth agent by its internal friction on the contact and smooth agent of mixing and extrusion. Therefore the impedance bearing movement friction resistance for the three combined. And the purpose of smooth is smooth after fat and smooth way prevent the raceway and rolling body, adhere to the direct contact between the metal, reduce friction heat 'make to minimize friction, thereby reducing wear and tear, avoid corrosion, prolong the using life. Bearing about 80% use smooth fat to smooth. There are many types of bearings is sending users to use after bearing factory greasing. So someone called smooth grease bearing inner ring and outer ring, rolling body, adhere to the four parts outside the fifth largest parts. To clarify the importance of smooth grease for bearings.