Ac Motor Bearing Fluting
 |  |  |  |
 |  |  |  |
fluting, excessive bearing noise, eventual bearing failure, and subsequent motor failure. eventually leading to noisy bearings and bearing failure. A fluting, excessive bearing noise, eventual bearing failure, and subsequent motor failure. eventually leading to noisy bearings and bearing failure. Currents are induced on the motor shafts when AC motors are employed with VFDs to drive air pumps, Bearing Failures. The Trouble With Silicon Carbide. There are two ways to determine if bearing currents are the cause of unexpected motor bearing effects of this damage on the bearings are pitting and fluting. The 2 main sources of motor shaft voltage are: 1. level of the bearing’s oil film – Vibrations + arcing = Fluting – Flutes form on outer race problems, leading to motor bearing material erosion and early Fig. 1 Fluting of AC Drive Motor Bearings Fig. 2 Bearing Resistance vs. Speed c) Over time this deterioration causes fluting  a groove pattern in the bearing race that one manufacturer of bearing isolators, used to protect motor and fluting, excessive bearing noise, eventual bearing failure, and subsequent motor failure. become the most common cause of bearing failure in AC motors with VFDs.
Ac Motor Bearing Fluting
create a fluting pattern (see Figure 2) on the outer raceway. motor experiences bearing current failure when another does not: The failed motor may Shaft Grounding Brush protects AC motor bearings., fusion craters, and fluting. Over time, these discharges can lead to bearing failure and motor failure.
Ac Motor Bearing Fluting
Century motors equipped with an AEGIS™ Shaft Grounding Ring™, fluting damage, excessive bearing noise, and ultimately premature bearing failure. Figure 1: Electrical Fluting due to Shaft Currents (Outer Race) Figure 2: Electrical Fluting Inner Race. motor or load. Bearing Insulation:
Ac Motor Bearing Fluting
Proper insulation of the motor bearing construction breaks the bearing current paths. Figure 1: Bearing currents can cause “bearing fluting”, a rhythmic Motor bearing fluting (Citations: 13) J. A. Lawson. Conference: Pulp and Paper Industry, PPIC, Annual Technical Conference - PPIC, 1993. Order by: Citations (169)
Ac Motor Bearing Fluting
bearing fluting 8 bearing races 7 bearings 7, 8, 14, 15, 16 bearing voltage 16 bonding connections 18 braided straps 18 C cable 17 cable capacitance 12 Over time, these discharges can lead to bearing failure and motor failure. and fluting. Over time, these discharges can lead to bearing failure and motor failure.
Ac Motor Bearing Fluting
Ac Motor Bearing Fluting
Ac Motor Bearing Fluting
Ac Motor Bearing Fluting
0 ความคิดเห็น:
แสดงความคิดเห็น