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  • Users: dgeesaman
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  1. dgeesaman

    Decreasing operating range of seal elements over the years

    My company has provided mechanical seals on some of the machinery we build/sell for decades now. In the early days, the seals were quite limited in range. Then as materials improved and mechanical designs developed, some seals were advertised to handle more shaft runout, higher operating...
  2. dgeesaman

    Machinery supports vs. structural steel

    I work for a machinery supplier. We are sometimes asked to include a custom mounting adapter plate or frame structure to cover an opening in the steelwork that is larger than our machine. This may include some live load requirements since mechanics will need to walk on it to inspect and...
  3. dgeesaman

    Self-locking taper angle

    I've been looking into a self-locking taper connection. My ideal outcome is 'slightly' locking so therefore I've dug up the formulas. The math that predicts that a taper locks when it has more frictional force than reaction force, i.e. (half-angle of the taper) = arctan(coefficient of...
  4. dgeesaman

    Hard milling for tooling

    I have a component I want to have made domestically for a personal project and I have an existing version that was made overseas. That vendor has vanished just a few months after that. I believe the existing version was made by hard milling of 440C 55HRC. It's a small split cavity mold used...

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