Rigid couplings offer high torque capacity with zero backlash. Two-piece couplings, available with or without keyways and with different-diameter bores in both metric and inch sizes, have opposing hardware that improves dynamic balance.
Full-depth keyways provide full torque capacity and a reliable fit, while forged sockets increase torquability. To compensate for shafts that vary slightly from nominal size, a crosscut design allows for clamping each shaft individually.
Bill Hewitson, Ruland Mfg. Co., (P), 380 Pleasant St., Watertown, MA 02172; (617) 924-8000.
The first Tacoma Narrows Bridge was a Washington State suspension bridge that opened in 1940 and spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7, just four months after it opened.
Noting that we now live in an era of “confusion and ill-conceived stuff,” Ammunition design studio founder Robert Brunner, speaking at Gigaom Roadmap, said that by adding connectivity to everything and its mother, we aren't necessarily doing ourselves any favors, with many ‘things’ just fine in their unconnected state.
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.