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August 28, 2009

The military's new off roader: The M-ATV
The U.S. Army and Marine Corp needed a new personnel carrier, one that could handle the rocky terrain of Afghanistan and withttand mine attacks. After a quick competition, they chose the M-ATV from Oshkosh Defense. Here's a look at its capabilites and design.

A critical look at high-speed train travel
Editor Leland Teschler takes a look at the energy savings and environmental impact of high-speed rail. And quite a few readers join him in the discussion.


Get a grip: Replacing suction cups with friction cups
Moving large parts such as windshields and car hoods can be difficult. But if they're oily and moving fast, the problem becomes even more challenging. One solution might be friction cups, sort of like suction cups on steroids that exert much more gripping force.


Seals make the difference in pneumatic cylinders for mechanical motion
Selecting the wrong seal can doom a design to premature failure. The right one, however, could let the design work flawlessly for years and years. So here's (almost) everything engineers should know about seals on pneumatic cylinders.


RINGFEDER'S RING-flex® Couplings

RINGFEDER's full line of RING-flex® couplings are available in single or double and close-coupled flexing designs for torques up to 500,000 lb-ft and shafts up to 11" in diameter. Completely maintenance free and no lubrication required, these long-lasting, torsionally rigid disc couplings operate without wear in high temperature environments.
RING-flex® couplings are available in four, six, and eight-bolt designs to accommodate a wide variety of connections in the transmissions of pumps, conveyors, printing presses, fans and generators, or anywhere else a backlash-free connection is required. Unique designs are available including: flange-mounted, close-coupled, fail-safe, high-speed, and extra-long couplings.

Featured Video

Pitch control in wind turbines
This video demonstrates hydraulic and electric pitch control on blades for wind turbines.
Watch video

New Products

Retaining rings
Hoopster retaining rings fit into much shallower grooves than regular snap rings or retaining rings making them suitable for light to heavy loads and ideal for thin-wall tubes. Advantages of the rings include low-profile, precision circularity, small radial size, and the potential for high thrust capacity. The low radial profile will not twist or deform under load as with conventional retaining rings.
The rings come in carbon and 302 stainless steel in sizes from 3/8 to 3 in. and are easily installed without special tools is available at
More Information: Smalley Steel Ring Co.

Stainless-steel bevel gears
The SUB Series bevel gears are made of SUS303 stainless steel and come in 24 sizes ranging from Module 1.5 to Module 3. The gears are available in a teeth range of 15 to 45, 8 to 20-mm bore sizes, and 25 to 80-mm hub diameters.
More Information: Quality Transmission Components, Div. of Designatronics Inc.

News from MD

Check Out the New EET Website

Are you looking for more information on energy efficiency? features the latest efficiency updates, information on the basics of energy efficiency and products available for energy efficient designs. Click here to visit the site and learn more!

Machine Design Video Spotlight

Learn more about Proto Labs
See how Proto Labs, through its First Cut and Protomold services, provides new product designers and engineers with the easiest, fastest and least-expensive way to obtain real parts, really fast.

Now Available On-Demand
The Energy Efficiency Web Conference & Expo

Engineers saw and heard great educational content at the Energy Efficiency Web Conference and Expo. If you missed the live virtual event, don’t despair! An archive of the full day’s agenda is now available.

Design engineers are required to integrate energy efficiency into their designs while maintaining lower costs, the highest reliability or both. The editors of Machine Design understand these challenges and have developed this conference to help engineers understand the recently imposed energy mandates. The information presented at this educational event will help engineers compare the different technologies and product related to energy efficiency. Attendees will gain access to the technical information needed to help them make the best decisions without having to travel or take time away from current projects.

Visit the archive to:
  • View informative webinars on energy efficiency
  • Visit interactive booths where you can contact suppliers
  • Peruse the Resource Center where you can download or link to additional pertinent energy efficiency information
Register Now!


Optimizing Mechatronic Systems Using Simulation
Sponsored by The MathWorks
DATE: September 10th, 2009
TIME: 2:00pm ET/11am PT

Are you encountering integration errors in mechatronic systems late in development during hardware prototyping?
Simulating mechatronic systems in one environment that combines mechanical, electrical, and control system modeling makes it easier to find performance errors early in your development process. In addition, current simulation technology allows integration of engineering data from different CAE tools, such as CAD and EDA, reducing translation errors.

Attend this live webcast and learn how simulation can help you:

  • Build multidomain mechatronic system models
  • Predict and optimize system performance
  • Understand and manage complex system interactions
  • Detect design inefficiencies and integration errors during development
  • Verify and test mechatronic systems before building hardware prototypes
Click here learn more and to register!

How to Select the Right Dispense Valve
Sponsored by EFD
DATE: September 17th, 2009
TIME: 2:00pm ET/11am PT

This webinar will provide an overview of the different types of dispense valves and review criteria for matching valves to specific fluids and applications.

Topics will include:

  • Common types of assembly fluids
  • Fluid/valve compatibility
  • Matching the valve to the application
  • Choosing a fluid reservoir
  • Benefits of using a dedicated valve controller
Click here learn more and to register!


Click Here for a list of archived Machine Design webcasts.

Featured Links

Don't settle for a standard coupling when a custom will do it better!
Need to fit a high performance coupling into a small space? Have an application requiring high misalignment? How about high stress applications? Or greater torque capacity and greater torsional stiffness? Custom Designed CD® Couplings From Zero-max Solve Difficult Requirements. Get the free literature.

PT Pilot® Custom Online Drive Selection
Access SEW-Eurodrive's extensive catalog of gearmotors, drives and motion controllers by entering either the horsepower or speed requirements of your application. PT Pilot® quickly moves through a series of point-and-click screens to select the components that best fit your application needs. Login to PT Pilot® at

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Contact Information
Editorial questions:   Stephen Mraz 216-931-9521
Advertising/sponsorship opportunities:   Virginia Goulding 216-931-9893

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