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  1. jonnycowboy

    Partially supported inner bearing surface

    Hi all, I am looking into an application of an "unfortunate" square-peg-in-a-round-hole. I need to fit a 40-mm square extrusion into a 50mm ID bearing. The application is low speed, <500RPM with low loads (robotic arm). I am looking into turning (lathe) the square 40mm extrusion so that I end...
  2. jonnycowboy

    Miniature Pressure Port

    Hi all, I'm looking for a threadable pressure port, the smallest possible. The pressure sensing and "working" lines have very small diameters (~20 thou "). I need the sense line to be 90 degrees to the "working" line I'm wondering if I have to use something fairly large or is there something...
  3. jonnycowboy

    Standard/Recommended Practice for Discrete I/O in Aircraft Application

    Hi all, I'm wondering if there is a standard specifying voltage levels for aircraft use of Discrete I/Os? IE: Gnd/Open would be: gnd, logic 1 open, logic 0 logic 0 lower limit: 12VDC logic 0 upper limit: 48VDC logic 1 lower limit: -2VDC logic 1 upper limit: 5VDC? Same question for 28V/Open...
  4. jonnycowboy

    Slewing Ring Bearing (crossed-roller) availability

    Hi guys, I'm trying to find a single slewing ring bearing (apprx 400-500mm OD), internal gear. Everytime I call anywhere they're asking for 4-6 mnths after payment (!!). Is there anywhere (on the web, or my local bearing shop?) I could find this in stock somewhere? The application is a robotic...

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