When it comes to bearings, what really bugs the engineers who design with them? Its service life, says 25% of the respondents in a Design News study of power transmission component users. Other top complaints: Lubricant (20%); Load capacity (18%); Cage (11%); Noise (10%); and Speed restrictions (8%). Now for the good news: 30% of engineers expect to buy more bearings in 2003 versus 2002. How much? The bearing market is projected to grow at over 4% annually by 2005, reports the market research company Frost & Sullivan.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
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