Self-aligning ball bearing in the use of the cause of the problem analysis

According to incomplete statistics, cement plant fan occurs when abnormal vibration of high failure rate of 58. 6%, due to the vibration will cause imbalance of the fan operation. Among them, the TIMKEN bearing adjustment improper set fit, will lead to abnormal temperature rise of bearing and the vibration. As a cement plant during the period of equipment maintenance to replace the fan blades. Blades with tight sleeves and bearing seat bearing fixed on both sides to cooperate. Commissioning occurs again free end bearing high temperature, vibration value is on the high side of failure. Disassemble the bearing cover, manual slow rotary fan, found in the axis of a particular position of bearing roller, in the load section rolling condition, which can determine the bearing running clearance changes on the high side and installation clearance may be insufficient. Measured, self-aligning ball bearing internal clearance is only 0. 4 mm, eccentric shaft of 0. 18mm。 Preferred to correctly grasp the bearing in the use of machinery parts, choose suitable for bearing the premise. , need to get data and information on the following aspects: 1, the function and structure of the mechanical device 2, 3 to use parts of the bearing, bearing load, Size, direction) 4, rotating speed of 5, vibration, impact, bearing temperature (6 The surrounding temperature, temperature) 7, the surrounding atmosphere ( Corrosion, clean, lubricate) The choice of the ways of bearing configuration usually. TIMKEN bearing shaft in two self-aligning ball bearings in the radial and axial support, at this point, called the bearing on one side of the fixed side bearing, it bear radial and axial load, the fixed axis and the relative axial displacement between the bearing box. Call the other side free side, only bear radial load, axial relative movement can to solve due to temperature change the shaft of the telescopic part of the topic and the installation of bearing interval error. For fixed side bearing, choosing available rolling surface axial moving in or moving bearing assembly plane. On the short shaft, the fixed side and free side little other cases, using only one-way fixed axial movement of the bearing. Bearing type selected choose bearing type, fully grasp the using conditions of the self-aligning ball bearing is very important.