Miniature instrument bearings are assembled with matching LinearRace(TM) shaft, guaranteeing a fit of 0.0001 to 0.0003 inch clearance. Smoothness is assured by finishing the working surfaces of the bearings and LinearRace shafts to better than 4 microinches. Precise positioning is enhanced with the virtual elimination of stick/slip by the bearings' low coefficient of dynamic friction. Bearings are available in 1/8, 3/16, and 1/4 inch bore sizes, and their stainless steel and brass construction makes them highly corrosion-resistant. The bearings can be used where lubricants cannot be tolerated, and applications include those requiring extremely precise and smooth motion
Thomson Industries Inc., 2 Channel Dr., Port Washington, NY 11050, FAX (516) 883-9039.
These new 3D-printing technologies and printers include some that are truly boundary-breaking: a sophisticated new sub-$10,000, 10-plus materials bioprinter, the first industrial-strength silicone 3D-printing service, and a clever twist on 3D printing and thermoforming for making high-quality realistic models.
Ear-based heart-rate monitoring gained momentum recently, as sensor maker Valencell Inc. announced it has licensed its biometric earpiece technology to Samsung Electronics Co. Ltd for use in so-called “hearable devices.”
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