【 Solve the experience 】 High power blower bearing temperature 98 ℃

【 Solve the experience 】 High power blower bearing temperature 2018-98 ℃ 12 - 3-01 run 1 induced draft fan often appear the condition of high bearing temperature, strip inspection of bearing in the overhaul, and replace the bearings, fan bearing helicopters to a temperature of 98 ℃ when commissioning, emergency shutdown and restart pressure is still too high, consider itself may not be bearing problem, immediately shut down the fan. Fan suspended on the motor bearing again after the collapse of the inspection, after inspection found no defective bearings, may consider bearing housing problems, then check the bearing chamber. Motor bearing of 7322 bearing outer ring in turn bearing interior, 7322 bearing outer ring is relying on the end cover foreign coil spring is fixed, therefore the probability of the high bearing temperature is not very big, then 7322 bearing will be removed to check of 6322 bearing, bearing itself is no problem, outer ring rotation. Take a closer look at between 7322 and 6322 bearing inner ring with a metal ring gasket, but not between outer ring and considers possible problems here, 6322 bearing outer ring cannot be fixed, add lubrication after ball bearings with outer ring resistance increase, drive the bearing outer ring rotation, thus bearing heating. Consulting, immediately contact the fan manufacturers reply may be bearing chamber machining error caused by. Unit, if the bearing chamber back to factory processing will affect the unit start working, then discuss the bearing outer ring fixed method. After repeated discussions, and ultimately determine the plan: between 7322 and 6322 bearing outer ring also add a metal ring gasket, make the pad ring diameter is the same as the outer diameter of 6322, backing ring depend on the bearing outer ring 6322, between 7322 bearing outer ring and ring gasket set aside the 0. 30 mm axial clearance, bearing heating expansion make bearing 7322, ring gasket, bearing 6322 close together, so as to achieve the goal of the fixed 6322 bearing outer ring. According to this plan after processing pad ring bearing chamber refitted, the related fan, temperature curve showed a trend of steady after 45 degrees, 3 - 1 blower motor side bearing temperature high defects been solved thoroughly. Source: ( Power eagle)