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Air Bearing ABCs  Remember playing air hockey? That same technology is used in an air or fluid film bearing, as pressurized air keeps elements inside the bearing from making contact with the casing. This bearing design avoids wear or heat generation and can be stiffer than roller bearings. An air bearing primer details design advantages.
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Why Mechanical Bearings May Be Better
 The previous article covered the pros of incorporating air bearings into you product or machine design, but what are the cons? Before choosing a bearing design, it pays to do the homework and contrast how mechanical bearings assist structural rigidity that may be required in your machine.
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Protecting Bearings from Lubricant Contamination
 Water, dirt, and chemicals often enter through a bearing seal, causing lubricant contamination. Using proper protection seals can prevent industrial bearing contamination and lead to longer life of mechanical components. Sealing choices can make a difference in costs and even energy issues, but what's better a lip seal or a rotating labyrinth seal?
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Sealing Air Safety
 Properly selected, seals can protect critical components from catastrophic failure. Perhaps the most vital seals on the aircraft are the fire seals found in the engine assemblies and fuel systems. Materials and design factors play an important role to deal with the issues in keeping aircraft in the skies.
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Danaher Motion
Faster Delivery of Linear Bearings and Shafting
 In stock now for fast shipment in the Midwest and New England are the most popular Thomson linear bearing components and shafting through a new manufacturer's stocking program. Includes cut-to-length and machined 60 Case Shafting; most popular inch and metric "A", Super, and SuperSmart bearings, matching pillow blocks and seals.
View all our featured products...
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The Precision Alliance
Ultra Low Profile Rotary Table Bearing Delivers 1.0 µm Run-Out
 The Precision Alliance proudly introduces the ultimate in low profile, high precision rotary bearings. The FMB Series is ideal for rotary positioning applications with heights down to 8.5 mm and run-outs down to 1 µm. The FMB mounts directly to flat surfaces and has ID's up to 250 mm. Contact TPA to learn more.
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York Industries, Inc.
Timing Belt Tensioners
 York Industries (ISO 9001:2000) has designed four tensioner types, available for next day delivery. STATIC SLOT, DYNAMIC SLOT, STATIC PIVOT, and DYNAMIC PIVOT. York's Web site is loaded with engineering data and design tips. Choose stock tensioners or configure your own. (Download 2D-3D CAD drawings). Call (800)354-8466 or e-mail us.
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Sovella, Inc.
Sovella Peg Board and Hooks
 The Sovella peg board system aids in lean manufacturing principles by offering organized, well placed tool storage to reduce wasted effort and increase productivity. With over 50 different available hook options, the Sovella peg board system can support almost any tool variation. Available in a full range of sizes to meet every need.
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Compendium on Compression Springs
 Open-coil helical springs that are compressed along the wind are compression springs. Compression springs can be found in automotive engines and large stamping presses, to major appliances, lawn mowers, medical devices, cell phones, and sensitive instrumentation. Don't know much about compression springs? Then review this concise, yet complete primer.
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Critical Considerations in Spring Configuration
 Will the springs have to be pushed, pulled, or twisted? What configuration do you need to fit your design? Are there any special considerations such as cost or delivery time involved? These are the three major questions in spring design, but there is more to determine when designing a spring configuration.
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Tips for Proper Tool Procurement
 Picking the proper hand tool involves a lot more than just going down to the local mega home store. Hand tools, especially those used for long periods of time need to be ergonomically designed (as only the user can determine), flexible, usable, and guaranteed for long term use. But there are other considerations…
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New Locking System for Hand Tools
 Everyone who has ever used a socket wrench to work on a car knows the pain of dropping the socket somewhere and then trying to retrieve it. A new locking system design promises that it won't release the socket until you want it to. That may solve one pesky problem for mechanics everywhere.
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Orttech, Inc.
Fail-Safe Brakes
 Ortlinghaus manufactures hydraulically, pneumatically, and electromagnetically released, spring applied, fail-safe brakes in single and multiple plate designs. Standard available torques range from 35 to over 1,000,000 lb. in. in either wet or dry running conditions. Custom designed units are also available. Installed on gearboxes, mining equipment, cranes, winches, electric motors, and other general mechanical engineering projects.
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Macro Sensors, A Division of Howard A. Schaevitz Technologies
Position Sensor 24 VDC Pre-Calibrated 0-10 VDC
 Pre-calibrated DC-LVDT's. Position Sensor applications in automated machinery and OEM applications. We offer a complete line of controllers and indicators for ease of setup and use. Call us for your tough applications. Robust custom engineered designs for extreme environments like high-heat, high-pressure, and subsea. [more information]
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Dice
A Better Job Search by Design
 DiceEngineering.com offers thousands of quality engineering jobs at top technology and engineering companies. Find jobs in your area of expertise. Search now.
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Resume Tips for Mechanical Engineers
 A career objective in a Mechanical Engineer's resume is so last century. Bring your resume up to the 21st century with these six tips from the American Society of Mechanical Engineers (ASME), such as replacing your objective with a career summary, and five recommendations to help you create an effective resume.
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 Vehicle Design Summit 2007
Engineers at MIT have a lofty goal. By July 2007, they plan to design, build, and test a five-passenger automobile with a fuel economy of 200 mpg, an acceleration of 0 to 60 in under six seconds, and a top speed of 120 mph. Can they do what Detroit can't?
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