A new series of RTX precision
planetary gearheads from Sterling Instrument feature high torque design and are offered in standard NEMA sizes
60 and 90. These 36 gearheads are identified as the S9160AMRTX and the S9190AMRTX Series and feature single, double and triple gear stage
configurations, optimized gear geometry, high torsional stiffness, captive,
bearing supported input pinion and they are sealed to extend service life.
Each of the two NEMA sizes is offered
in gear ratios ranging from 4:1 to 700:1 and their maximum input speed is 6500
rpm. Their single stage, double stage and triple stage minimum efficiencies are
95, 90 and 85 percent respectively. Operating temperatures range from -40 to
+121C. The housings are made of stainless steel, with anodized aluminum
mounting flanges. The output shafts are made of stainless steel and the gears
are made of alloy and stainless steel.
Two different shape-shifting polymers have been announced from two different universities: Wyss Institute at Harvard University and Zhejiang University in eastern China. Both of them change their shapes when immersed in water, and the one from Wyss Institute was made with 3D-printing techniques.
When you think of the DARPA Robotics Challenge, you may imagine complex humanoid contraptions made of metal and wires that move like a Terminator Series T-90. But what actually happened at the much-vaunted event was something just a bit different.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.