East Providence, RI- Plain polymer bearing performance doesn't have to depend so much on the composition of the shaft. Instead, new Polymer-Encased-Polymer (PEP) bearings from igus inc. diminish the influence of the shaft material by combining concentric sleeves of self-lubricating polymers into a single closed bearing.
The PEP's stationary inner sleeve acts as the mating surface to the shaft, while the outer sleeve rotates.
By carefully matching different polymer compounds for the inner and outer sleeve, igus can tailor the bearing wear and coefficient of friction characteristics. At loads up to 725 psi, the bearings offer a coefficient of friction of 0.12 to 0.2-versus 0.08 to 0.3 for polymer and steel.
The company offers the bearings for a variety of rotary-movement applications, including ones served by closed ball bearings. ID sizes range from 6 to 20 mm and are designed for press-fit installation with a recommended tolerance of H7.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.