Updated iPhone App “ISO Fits & Tolerances”

Trelleborg Sealing Solutions launches an updated version of the recently released iPhone app “ISO Fits & Tolerances” that allows switching between inch and metric measurements. Providing results based on the ISO 286 System of Limits and Fits, the updated version also adds additional tolerance classes and is available in English, Spanish, German and Dutch.

“ISO Fits & Tolerances” is intuitive and very easy to use, and this updated version gives even greater flexibility of use. Upon entering the nominal diameter needed, users simply select the tolerance classes for bore and shaft. The app then provides the complete ISO fits definition with all relevant values including the type of fit. Tolerances are shown for the most commonly used ISO tolerance classes, and convenient graphs illustrate these classes by bore and shaft.

“This newly updated app is an enhancement of the original version,” says Wolfgang Heinrich, Website Specialist for Trelleborg Sealing Solutions. “We are always looking for ways to make our customers’ working lives easier, and this app now provides more value to a larger audience. It is always our goal to meet our customers’ needs on a global level.”

One-touch access to the automatically updated library of Trelleborg Sealing Solutions films and animations on YouTube remains a key feature. For more information, just click ‘Contact’ and you can choose to email or be connected to the Trelleborg Sealing Solutions website.

“ISO Fits & Tolerances” is available free of charge from iTunes or via the Apple App Store on the iPhone and iPod Touch. It can easily be found by searching for ‘Trelleborg ISO Fits.’

Hydraulic seals help BigDog move

Founded by former MIT professor Marc Raibert as a university spin-off in 1992, Boston Dynamics began building robots in 2003. The company, situated in Waltham, Massachusetts, outside Boston, is dedicated to the “science and art of how things move.” It employs a team of 70 technicians, engineers and scientists specializing in building robotic systems that possess the mobility, agility, dexterity and speed normally seen in animals and humans. Robots made in Waltham combine advanced dynamic control systems with sophisticated mechanical designs. Thanks to Trelleborg’s high-end seals robots from Boston Dynamics are moving.

Imagine a mechanized pack mule that can trudge through rocky terrain, wade across mud puddles, skid over ice sheets, wiggle through underbrush and climb steep hills. It can see and avoid obstacles, withstand blows and falls, follow a human leader on cue or autonomously stick to a preset course, all the while carrying upwards of 50 kilograms of payload. It sounds like a creature from a science fiction novel, but in actuality this is a sophisticated four-legged robot called BigDog that has already been put through its paces in the Massachusetts countryside in the United States.

Boston Dynamics

BigDog and its second-generation successor LS3 (short for Legged Squad Support System) were developed and built by a small but cutting-edge outfit called Boston Dynamics with funding from the Pentagon’s research arm DARPA.

The company’s founder, former MIT professor Marc Raibert, sees a wide range of applications for his agile robots, from carrying supplies to scouting, rescue and firefighting missions in rugged environments. In a decade or so, he believes, smart pack robots might be as commonplace as jeeps.

“About half the Earth’s landmass is inaccessible to wheeled and tracked vehicles,” Raibert says, explaining the motivation behind the creation of BigDog. “But people and animals can go almost anywhere on foot.”

Intelligent Movement

Hence the idea was born to build a robot that moves like a living creature, senses its surroundings and can run, walk and even hop over obstacles. Such a dynamically self-balancing robot requires a combination of advanced computer controls and sophisticated structural and mechanical designs, Raibert explains.

“There have been a few legged robots in the past, but BigDog and LS3 are way out in front with regard to performance on rough terrain in all sorts of real-world conditions,” he says.

LS3, which is scheduled to enter its test phase in mid-2012, will be an upgraded version of BigDog, with more load-carrying capacity and a walking range of up to 20 miles before it needs to refuel. It will be able to obey simple commands from humans, such as “follow me” or “wait,” which can be given through a handheld device. While BigDog has sensors in its legs to feel the terrain, its successor will also be able to see and get a location fix thanks to GPS.

One key component to make sure Boston Dynamics’ robots can maneuver through almost any environment for hours on end is the hydraulic actuators that power the legs. That’s partially thanks to Trelleborg Sealing Solutions, which provided Raibert’s team with compact high-end seals for BigDog’s joints.

High Performance O-Rings

“Simple O-Rings fail and leak after a short period of time, so we gave them a durable, high-performance seal that met their requirements,” explains Dan Esterly, one of the technical managers at Trelleborg Sealing Solutions.

Making a mechanical dog walk and run was an unusual project, he admits, since these types of seals are most commonly used for airplane landing gear and industrial equipment.

The unique project has already led to closer collaboration between both companies. Trelleborg is supplying high-end seals for the forthcoming LS3 and for the company’s latest robot, a humanoid creature dubbed PETMAN. It will be used by the U.S. Army to test chemical-protection clothing. “We developed PETMAN from a clean sheet of paper to a walking robot in just eight months,” says Raibert. On a lab treadmill, the company’s latest creation is literally up and running, heel to toe like a human.

High-End Seals

Trelleborg’s seals are designed to take abuse, and they show minimal wear and will not leak under adverse conditions. Made from polytetrafluoroethylene (PTFE)-based sealing compounds, the high-end seals are usually used for industrial and aerospace applications. They operate reliably at temperatures ranging from –70°C to +260°C and remain functional even in a debris-filled environment at high speeds and pressures. These characteristics make Trelleborg seals ideal for hydraulic actuators in robotic legs.

New Argentinean sales office

Trelleborg Sealing Solutions has opened a sales office in Argentina’s capital, Buenos Aires.

Third largest gross domestic product in Latin America

“This is an important step to expand our activities in this key Latin American market,” says Flavio Marques, who is General Manager of Trelleborg Sealing Solutions Brazil and responsible for business development in Latin America. “Argentina is a fast growing economy and has the third largest gross domestic product in Latin America, after Brazil and Mexico. Many of Trelleborg’s target market segments have a strong presence here including the automotive Industry, agricultural machinery, Oil & Gas, hydroelectric power, mining and steel production.”

Image shows Matias Campos, who will be providing local technical support. He is standing in front of the impressive back drop of Buenos Aires, as seen from the Argentinean sales office.

Contact the new Argentina sales office!

If you are located in Argentina and wish to contact the sales team in Buenos Aires, telephone +54 11 4590 2210 or email matias.campos@trelleborg.com