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Bearing Damage due to Electrical Discharge
What is Electrical Discharge through bearings? Shaft and bearing currents have been described as shaft voltages, circulating voltages, circulating currents and bearing currents. Shaft voltage only becomes a problem when it leads to bearing current and consequential damage to the motor bearings. If this voltage, referred to…
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A Guide to Soft Foot and How it Can Damage Machinery
This article was created from a community discussion. Soft foot is a condition that can cause significant damage to machinery. It occurs when one or more of a machine's feet do not make appropriate contact with the frame, baseplate, or foundation. Soft foot can be found in any piece of equipment, but it is most commonly…
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Bearing Lubrication
The disciplines of machinery lubrication and vibration analysis are both critical elements of a reliability-focused culture. Both enable us to stay on the left side of the revered potential failure-failure (P-F) curve. Unfortunately, even in the modern era, these programs often exist in a disconnected state, forgoing the…
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Bearing Wear
How Vibration Analysis Helps to Detect Bearing Wear Bearings play a vital role in the performance of rotating equipment. Ensuring the health of them is an important part of any maintenance & reliability program. This article will discuss one type of bearing defect category and how vibration analysis can help to detect…
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Belt Wear
Belts are commonly used as a means for power transmission in electric motor drive trains. Belt drives enable power transmission between two or more shafts through the use of pulleys and a belt linking the pulleys. They are generally more cost-effective than other options such as chain or gear drives. They can also act as a…
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Cavitation
Cavitation is the formation and subsequent collapse of a vapor inside a liquid. Cavitation occurs in centrifugal pumps and can cause severe damage and disrupt operations. The damage results from bubbles collapsing and discharging energy. The severity of the damage depends on the liquid being pumped as well as the…
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Coupling Degradation/Wear
Introduction Couplings are a component used to attach individual shafts together for the purpose of power transmission. They allow for multiple components to operate as a system and provide a means to simplify the disassembly process to isolate or replace single components. They are often problematic due to the complexity…
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Motor Electrical Faults
Introduction Condition monitoring is a valuable tool for detecting faults and analyzing the health of motors. Motors are widely used in various industrial applications and can experience numerous issues over time. These issues can lead to decreased efficiency, increased maintenance costs, and motor failure if not addressed…
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Resonance
One of the Augury fault cards that can be assigned to any component (motor, gearbox, pump, fan, a whole asset, etc…) is called Resonance. It is a very complicated topic; it can be difficult to understand, difficult to diagnose, and sometimes can be difficult or costly to repair. To understand what Resonance is, first we…
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Rotating Asset Imbalance
What it is Unbalance is one of modern industrial machinery's most recognizable, pervasive, and fixable issues. It occurs when the center of mass of a rotating component (such as a rotor or impeller) is not aligned with its axis of rotation, i.e. the rotational center of gravity no longer aligns with the rotational center…