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  • Users: michaelb7
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  1. michaelb7

    60034-14 "Machines mounted in situ"

    The scope of this standard says "This standard is not applicable to machines mounted in situ". Does anyone know what this means? My motor is mounted to a gearbox by a flange, does that mean this standard wouldn't apply to it?
  2. michaelb7

    Camshaft Design Torque

    thread404-121103 I'm trying to find the torque to drive an existing cam (the calculations were lost ages ago). I think I'm going to recommend that we buy some software for it, because it seems like the calculation that Zekeman did would have to be repeated MANY times around the surface of the...
  3. michaelb7

    Gearbox Power Rating

    Does the horsepower rating of a gearbox depend on the input speed from the motor? Most catalogs seem to have the ratings based on an input speed of 1750 rpm. I'm driving my gearbox with a 1000 rpm motor. My gearbox is rated for 3/4 hp and I'm driving it with a 3/4 hp motor. I'm concerned that...
  4. michaelb7

    NEC 505 and Explosion Proof

    I have a motor http://www.eng-tips.com/that has a rating as Class 1, Zone 2, IIC, T3. I've read through NEC 500 and 505. I see the definitions of "Explosion Proof" in 500.02. I see the definitions of the Class, Zone, Material Group, and temperature designation in various sections of NEC 505...
  5. michaelb7

    Find Tensile Stress in Anchor Bolts

    I have a decoking valve that is mounted with anchor bolts. The valve is experiencing forces and torques in many directions. I need to find the tensile stress and shear stress in each anchor bolt. To me it makes sense to break up the problem into finding the tensile stress, then finding the shear...

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