Preventing Machine Downtime

what to do about common motor bearing failures

click to learn about common motor bearing failures and the proper maintenance required to prevent your motor from damaging itself.

engine, motor, and bearing failure analysis

expert failure analysis of engines, motors, bearings, and mechanical systems by g2mt labs, including metallurgical and corrosion analysis.

motor bearing failure causes and prevention | helwig carbon

discover why motor bearings fail prematurely and strategies for optimizing the lifespan and performance of your equipment.

dealing with motor failures: common causes and solutions - caw

protecting motor bearings and windings is the first step in preventing motor failures. if you want to make a plant manager’s day, just say: “production’s down because a motor failed.” fortunately, such situations can usually be overcome with some relatively simple techniques and straightforward solutions to protect the bearings and stator windings. these two vulnerable…

8 reasons why bearings fail in electric motors - nems

learn why bearings fail in electric motors. discover common causes, prevention tips, and solutions to extend the life and performance of your electric motors.

determining the cause of bearing failures in circulating water pump motors

eight vertical circulating water pumps are used to circulate condenser water at the generation station in a nuclear power plant. the pump installation is pictured in figure 1. the motor pump system is arranged vertically with the drive motor above the pump. each pump is driven by a 28-pole, 2500 hp synchronous motor at 271 rpm. the motors sit on a platform that projects out over a large reservoir and each one delivers 275,000 gpm at about 12 psig. the pumps are location below the motors in the reservoir. there are four pumps per generating unit. each unit can run at full capacity drops about 10 percent. three lower motor bearing failures occurred shortly after sudden ambient temperature drops. analysis showed that there was adequate lubrication but the original bearing design was very sensitive to clearance. a finite element analysis of the motor proved that the case would pinch the bearing when cooled from 70 degrees f to 25 degrees f. this reduced the bearing clearance significantly and caused the failures. a new profiled bearing was developed that would provide better rotor support with larger clearances that would be more tolerant of thermal clearance changes. the bearing failure analysis was wide in scope and was conducted by a large team including engineers from the power plant, turbomachinery consultants, repair shops, and bearing manufacturers. many different theories were considered and investigated. this paper examines the investigations of the bearings lubrication with a computational fluid dynamics (cfd) analysis, the motor rotordynamics, the effects of ambient temperature drop, and the manufacture of a new bearing design.

extend motor life with improved bearing care

motor bearing care

understanding bearing failure analysis - emerson bearing

learn more about bearing failure analysis, when it’s needed, and how to perform it to help keep your operations running and profitable.

how can i stop bearing current failures?

on rare occasions, operators in the process industry may note that their low voltage motors experience a current flowing through the motor bearings, especially when they are used with a variable speed drive (vsd).

vsd

vsd’s are the largest single source of bearing failures in the world today. there is a 57% increase in bearing failures worldwide, which is due to the introduction of igbt variable speed drives.

common causes of motor bearing failure - knowledge

common causes of motor bearing failure

how to prevent rolling element bearing failure | hi-speed industrial service

mechanical failure is the cause of 80% of motor failures. understanding the causes behind bearing failures can prolong the life of the equipment.

how to prevent electric motor failure with bearing isolators – sepco, inc.

sepco discussed the benefits of bearing isolators in preventing motor failure in a recent industrial trade magazine article.

understanding electrical discharge in wtg bearings — malloy wind

causes of electrical fluting discharge in wind turbine generator bearings and solutions.

bearing failures on vfd controlled electric motors - heco

shaft currents can have a destructive effect on electric motor bearings. this article, with information from our friends at aegis shaft grounding rings, is intended to inform professionals about these voltages and their effects on bearings in electric motors. because of the high-speed switching frequencies in pwm inverters, variable frequency drives induce shaft currents in …

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why bearings fail and what to do about it | duke electric

get the low-down on bearing failure and a handy checklist to help you identify what's up with yours, including signs to look for and proven fixes.

how to solve premature bearing failures

learn how to prevent premature bearing failures with these helpful tips from industrial electrical company. contact us for additional information.

12 reasons why bearings fail

this article is a guide to the major factors that can lead to bearing failure as well as how you can prevent the issues from happening. by learning more about these potential problems and kn…

detail

http://new.abb.com/events/detail/2017/07/13/customers/motors-drives-electric-motor-bearing-failure-causes-and-prevention

motor bearing failure - airkraft

motor bearing failure (emoji) the rear bearing has failed causing damage to the bearing housing and melting the cooling fan from the drive shaft. also, the late

bearing failures - smart lubrication tips

this article provides information on the reasons for failures in rolling element bearings and the importance of selecting the appropriate lubricants.

electric motor bearing maintenance

electric motor bearing maintenance good maintenance practices yield excellent service from your electric motors. up to 80% of all electric motors, regardless of size, are rebuilt because of bearing…

bearing current problems: causes, symptoms, and solutions

choosing the best remediation method depends on a thorough understanding of the potential current paths in an installation

the essential guide to electric motor failure | duke electric

want to troubleshoot, repair and prevent electric motor failure at your plant? get tips for report writing, root cause analysis, motor management and more!

common preventable electric motor failures: bearings - heco

the below video is a 15 minute segment of an hour long presentation given by todd hatfield of heco at the 2017 reliability, process, and maintenance (rpm) symposium. this presentation discusses common preventable causes of electric motor failures. this section of the presentation discusses bearing related failures as bearings account for about 51% of all …

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bearing currents and how to beat them

bearing currents problems

electrical bearing failures in electric vehicles

in modern electric equipment, especially electric vehicles, inverter control systems can lead to complex shaft voltages and bearing currents. within an electric motor, many parts have electrical failure problems, and among which bearings are the most sensitive and vulnerable components. in recent years, electrical failures in bearing have been frequently reported in electric vehicles, and the electrical failure of bearings has become a key issue that restricts the lifetime of all-electric motor-based power systems in a broader sense. the purpose of this review is to provide a comprehensive overview of the bearing premature failure in the mechanical systems exposed in an electrical environment represented by electric vehicles. the electrical environments in which bearing works including the different components and the origins of the shaft voltages and bearing currents, as well as the typical modes of electrical bearing failure including various topographical damages and lubrication failures, have been discussed. the fundamental influence mechanisms of voltage/current on the friction/ lubrication properties have been summarized and analyzed, and corresponding countermeasures have been proposed. finally, a brief introduction to the key technical flaws in the current researches will be made and the future outlook of frontier directions will be discussed.

13 common causes of motor failure

this article demonstrates how to detect the 13 most common causes of winding insulation and bearing failure in advance.

3 common causes of engine bearing failur

engine bearings must work in punishing conditions and will soon break down if not maintained. learn about three common causes of engine bearing failure.

the common causes of bearing failures in electric motors | prime engineering | mechanical engineering

the common causes of bearing failures in electric motors include electrical erosion, metal to metal contact due to a lack of lubrication and more. prime engineering are experts in repairing and replacing motor rotor shafts.

tips to predict bearing failures, measure lube film thickness

monitoring electric motor bearing condition is paramount to insure reliability. electric motors are an asset that must be managed, and prolonging their life will insure more contribution to …

what causes bearing failures and preventative measures you need to know

in this guide, we cover what bearing failure means, different types of failures, common reasons why bearings fail, and tips to prevent bearing failures

common causes of bearing failure and how to avoid them | orapi asia

improper lubrication causes 80% of all bearing failure due to insufficient quantity, incorrect type, or improper application.

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