Mechanical Components

Advanced Symbolic and Numeric Techniques for Machine Vibration Analysis

The operational reliability of a rotary equipment train is dependent on the vibration of its components. Often, the only evidence of this vibration is gear noise or coupling wear. However, these early indicators might eventually develop into high-amplitude vibration, resulting in gear wear, gear tooth failures, or broken shafts. The torsional response characteristics of rotating and reciprocating equipment should therefore be analyzed and evaluated to ensure system reliability.

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How to Avoid Bearing Corrosion

This white paper explains how to avoid bearing corrosion and examines the most common corrosion protection options. It identifies five critical service conditions design engineers should consider early on: not just performance requirements (load, accuracy, fatigue life, etc.), but the kind of contaminants, materials corrosion resistance ratings, frequency of maintenance, and extreme environments.

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Unique Method for Orifice Production

To produce accurate, repeatable orifices, all the variables that might influence the Cd Value (Coefficient of Discharge) must be controlled during production. This includes the orifice hole length, edges, surface finishes, roundness and the elimination of all tool marks, burrs, ragged edges and irregularities. If any one of these areas is not perfectly managed, the orifice flow rates will vary from piece to piece thereby making it impossible to predict flow with any accuracy.

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How to Optimize Performance and Minimize Size in High Speed Applications

Electric motors are continuously evolving with the constant release of new material in the market. Today, NeoFe magnets are reaching 50 MGoe and new lamination materials offering limited losses, allow the use of electric motors at very high speed. For each application it’s crucial to understand in detail the specifications in order to offer the optimum design, Portescap has developed few motor technologies in order to be address each application with an optimal solution.

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Spherical Plain Bearing

AST Bearings’ website features a variety of white papers covering a range of spherical plain bearings, free of charge. These white papers include spherical plain bearings requiring lubrication (steel-on-steel) and maintenance-free spherical plain bearings, which are broken down into categories according to the sliding contact surfaces: steel-on-PTFE composite material, steel-on- PTFE fabric and steel-on-copper alloy. The white papers offer valuable and detailed information, such as design characteristics, materials, applications, temperatures and more for every product.

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Lubricant Selection: What Every Design Engineer Needs to Know

Simply stated, lubrication refers to the age-old science of friction reduction. People have been using lubricants for thousands of years, experimenting with waxes and oils from vegetables, fish, and animals to move heavy materials with equipment designed to gain mechanical advantage. In more recent years, the discovery of petroleum oil in the 1800s ushered in a new era of lubrication developments as people learned how to refine this oil and use it for a variety of purposes. Machinery could now be developed to operate faster and under heavier loads by using lubricants to create a barrier that eliminates friction and metalon- metal contact.

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9 Questions to Ask when Specifying a Slewing Ring Bearing

In applications where a bearing must support a rotating structure (e.g. cranes, radar, tank turrets), premature failure can put people and equipment at risk. Designers choosing a slewing ring bearing for such applications should consider many factors, such as the bearing’s support structure, mounting (including bolt strength, tensioning and hole patterns), installation, and even storage. A new white paper from Kaydon Bearings Division details nine key questions to ask when specifying a slewing ring bearing.

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