New micro brushless motors from Sanyo DC Micro Motor Division feature a ceramic air bearing design and frictionless, quiet, high-speed operation. The design eliminates the need to lubricate with oil, which tends to break down over the life of the motor. A 20 mm-size motor is available, with a 14 mm-size model to come. The motor has already been applied in a rear projection television color wheel, because it runs at high speeds and temperatures and is very quiet. It is also suitable for medical applications requiring high-reliability where an out-gassing oil bearing might cause an unacceptable level of contamination.
Sales of semiconductors, interconnects, and other electronic components in North America were flat through the second quarter of 2015, reflecting a pattern that’s been repeating itself for several years.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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