he device is a vertical axis vertically arranged in the bearing chamber, the upper shaft without suspension, supported by bearings, shaft bearings are installed at the bottom of the outdoor rotating parts weighing 50 kg, the two ends of the shaft are used in single row tapered roller bearings, the bearings between the length of 30 meters. The rotation speed of the shaft is 480r/min. The device is suspended in a turntable rotation, centrifugal force at work, the device to swing outside, because the friction force at the lower end of the shaft member and the outer contact suspension and rotation, the radial force is subjected to the axis is about 1200 kg. At the same time work, bearing still bear radial impact load. Previously used 7 series bearings, lower bearing life is very short, bearing cage easily damaged. Is there any problem in the selection of the bearings? How should I configure it?
Why not such a large selection of axial thrust bearing, if the radial force selected contact angle greater than 45 degrees (thrust) tapered roller bearings or spherical roller bearings are good, ordinary radial cone bearing axial force mainly depends on the inner ring rib, movement and rib roller end surface contact of gyro rotation, life too effect of axial force, and excessive axial force will make rib fracture.
Thrust bearing words. Thrust roller bearings can be used,
Why not such a large selection of axial thrust bearing, if the radial force selected contact angle greater than 45 degrees (thrust) tapered roller bearings or spherical roller bearings are good, ordinary radial cone bearing axial force mainly depends on the inner ring rib, movement and rib roller end surface contact of gyro rotation, life too effect of axial force, and excessive axial force will make rib fracture.
