High speed motor bearing matching doorways

Bearing is the key to the support of the normal operation of motor parts and components, in addition to the manufacturing process control, the design of the motor bearing configuration is very important, such as vertical and horizontal motor should be chosen different bearing configuration, different speed also should choose different request of motor bearings. In conversation with a friend, its matching with original ideas about the bearing, so Ms. Stopped due to sort out, share with you. 1 horizontal motor bearing configuration on both ends of the horizontal motor should try to use a ball bearing and a bearing. At present domestic more than 2 very small and medium-sized motor adopts two ball bearings, although some manufacturer bearing interior diameter tolerance zone to the clearance fit direction stopped some adjustments, in order to alleviate fever after ball bearing extruded ills. But as a result of the contraction coefficient of bearing coat than bear bearing chamber of cast iron parts - — Coat or bearing sets of large and bearing temperature is higher, so the original bearing coat at room temperature to the axial sliding bearing chamber a little, but when working shaft dynamic, so can accept after hot string that is used when two ball bearings bearing life short, easy to heat the main reason. Using two ball bearing motor after the temperature rise experiment, stop temperature measurement, sometimes is to drive motor bearing is burn out for the second time, the reason is ball bearing clearance bearing an rotor heat bilges cold shrink, coat can't climb in bearing chamber, the ball to accept large axial force caused by. If using a ball bearing and bearing a column, can prevent the above problem. With a good motor factory will H560 stand number 2 in the extremely high voltage motor, from the two ball bearings instead of a ball bearing, bearing a column, the late running effect is very good. In addition to the conventional overhaul cycle change bearing, never produced during normal operation. And is measured at the bearing temperature was 20 ℃. This is the domestic first 2 pole motor adopts traditional 2 ball bearings instead of a ball bearing, bearing the victory of the case, a column has been gradually on the explosion-proof motor. For Richard solve use column bearing instead of ball bearing limit speed after fever, noise problem, can use light column bearing series, and put it on the outer fan, cooling condition is good, at the same time bearing noise can also be engulfed by the fan noise. If power is larger of the 2 pole motor, the bearing model number is larger, limiting speed of light series column bearings can also be difficult to do a request, can also change the smooth bearing grease to thin oil. 2 vertical motor bearing configuration when the vertical motor to drag the cylinder in the petrochemical system with pump, because of the multi-stage cylinder pump during starting from time to tome for axial force upward, plus freight, on request, and in order to eliminate the rotor heat shrinkable to bearing damage, vertical tube with pump motor ( Are 2 or 4 pole) Motor, bearing should choose to install two single row angular contact ball bearings, the bearings with cylindrical bearings, is to choose light series is advisable. To avoid thrust ball bearing damage, two to install bearing there should be a additive of axial force on the bearing a coat. His strength to ensure that the size of the transport and starting, the bearing is not due to the backward from the shaft extension end to the load for axial force and the damage degree. 3 bearing type and model choice should choose light series as far as possible the 2 pole motor bearings; Pole for more than 4 pole and the positive and reverse electric stories selected series bearing; Positive and reverse the low-speed electric made series of weight bearing. Light, medium and heavy shall choose a ball bearing, bearing a column, two pole motor bearings should be placed on the shaft end. In recent years some electric two ball bearings used in the 2 pole motor selection of large clearance of ball bearings, which is ease for bearing heating reduce clearance incurred during operation measures of bearing damage. But the big clearance of bearing mechanical noise will also increase. If using a ball bearing, a column bearings, bearing chamber of tolerance to choose appropriate can also eliminate the above disadvantages.