Have you heard the news? NASA has deployed a fleet of aircraft that will obtain high-resolution measurements of local phenomena and processes, such as ice sheet thicknesses, precipitation, and air quality. Not that there's been much snowfall to investigate in the U.S. — with this year's particularly mild winter.
In other news, here is this month's PDF on fundamentals, requiring no pesky registration. This particular edition covers Bearings ... including an entertaining look at bearing history, modern bearing arrangements, materials, and applications, plus a tour of all the rolling-element varieties, as well as sleeve designs. Download the free PDF for a beautifully illustrated Bearings refresher on topics that all of us engineering types are "supposed" to know.
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- Elisabeth Eitel
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Articles
Here we explore the application of one component, encoders, as an example of hazardous-environment design approaches.
To ensure the safety of systems operating in hazardous locations, governments worldwide have established regulatory bodies that have developed testing and certification standards and product marking requirements. Some countries have coordinated the certifying process, creating reciprocity agreements with the different agencies, and allowing certifying bodies of one country to test and certify to standards of another country.
Even so, with various classifications of hazardous locations, different nations have developed standards for equipment installed in these environments - and a patchwork of requirements has evolved.
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Advertisement
 ‘Top 10’ Flat Cable Benefits
Here they are: the Top 10 benefits of using flat cables. Count them down with us. Here’s a preview: #4- Flexibility; #5- Greater Strength; #6- Consistent Electrical Characteristics; #7- Greater Current Carrying Capacity; #8- Reduced Skewing Effects. See the details on these and learn about all 10 Benefits at Cicoil.com. Then head over to the Cicoil Online Configurator to see just how easy it is to build a custom flat cable and receive an instant quote! www.Cicoil.com
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Modular systems are based on standardized individual components that can be combined in different ways to form moving machinery, while reducing the amount of planning, design, and commissioning by system integrators, plant designers, and users. Interchangeable motion components also boost stability, while concurrently allowing modifications and expansions for reconfiguration when a design's purpose changes.
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Advertisement
 New: Reverse Logic High CMR Intelligent Power Module and Gate Drive Interface Optocoupler
The ACPL-M483/P483/W483 fast speed optocoupler contains a GaAsP LED and photo detector with built-in Schmitt trigger to provide logic-compatible waveforms, eliminating the need for additional wave shaping. Key features of the product family are:
- Inverted output type (totem pole output)
- Truth Table Guaranteed: Vcc from 4.5 V to 30 V
- Short Maximum Propagation Delays
- Minimized Pulse Width Distortion (PWD)
- Very High Common Mode Rejection (CMR)
- Hysteresis
www.avagotech.com
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New Products
A lightweight MT 105-50-LM micromanipulator stage from Steinmeyer Inc. is for applications in semiconductor metrology, biomedical, miniature robotics, and laser industries.
• 105 × 151 mm, 25-mm height, and weight of 1.0 kg • 50-mm travel with 1-μm positional accuracy, straightness/flatness runout of ±1 μm, repeatability of ±0.2 μm
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 Compact, Powerful AND Affordable
RP-Series brushless motor is now available in a NEMA 34 frame. For all your machine requirements, this family of motor product is available from NEMA 17 through NEMA 34. The cost-effective design is ideal for those physically and fiscally demanding applications where torque, size or cost can be compromised. A variety of standard voltages and torque ranges are available or ElectroCraft can customize a winding and mechanical package that meets your exact needs. www.electrocraft.com
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The YS1700 controller from Yokogawa Corp. of America is now qualified for non-safety seismic and safety seismic applications.
• Suitable for power, petrochemical, water, pulp/paper, marine, nuclear industry • Dual CPUs with automatic fail over which provides display and manual control capability if an abnormality occurs • Hard manual backup, battery free memory backup, and backwards compatibility.
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SimpleLink Wi-Fi devices from Texas Instruments Inc. include self-contained wireless processors, aimed at enabling easy integration with any embedded system.
• SimpleLink Wi-Fi CC3000 is a self-contained 802.11 network processor for simple and quick addition of Internet connectivity to any embedded application • TCP, UDP and IP on chip; consumes 0.5% of the resources as compared to traditional Wi-Fi, with 6 KB Flash, 3 KB RAM software footprint
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News from MD
Today's Additive Manufacturing: Injection molding, living hinges, overmolding and more
Sponsored by: Objet
Date: Febbruary 23rd, 2012
Time: 2:00pm ET/11:00am PT
During This Webinar You Will Learn:
• Exposing the real range of 60+ materials
• How are companies using these materials for testing?
• See over-molding successes for 3M, Devicix and Sanford
• How Digital Materials may be your next production part
• How VistaTek is using additive manufacturing to grow injection molding
Register today!
ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
Click Here for a list of archived Machine Design webcasts.
Featured Links
DYNETIC SYSTEMS
Integrated brushless gearmotor, incorporating gearing into the body of the DC motor, improves efficiency while reducing size and noise levels.
www.dynetic.com
Bellows Couplings Offer Significant Advantages
Servometer bellows couplings combine an electrodeposited metal bellows and offer extreme sensitivity, flexibility, and accuracy. Advantages include zero backlash, very low wind-up, and low side thrust. www.servometer.com
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