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  • Users: ERIMechEng
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  1. ERIMechEng

    Durable Plastic for high rolling resistance/durability

    Design goal is to support a 1,000lb spool of cable in horizontal fashion (rotating axis horizontal). Spool flanges (steel-lined) will be sitting on four rollers. Each roller will be lined with (or completely machined out of) a plastic selected to dissipate inertia of spool as the cable is...
  2. ERIMechEng

    Air "Pusher"?

    Problem: I have a 20"x16"x7" box with some heat generating radio components inside. The aluminum box is sealed for EMI concerns, but the lack of heat exchange is causing the internal air temperature of the box to get too high, and the components are overheating and failing. As a modification...
  3. ERIMechEng

    Quick Disconnect Shaft Coupling

    Problem: Need to drop load-bearing shaft into a mechanism, and couple the load bearing shaft to a shaft with a brake (please see linked PDF). Zero torque, zero speed until shafts are coupled. Shafts are both approx. 1.5" dia. Transmitted torque = 600 in-lbs @ 100 rpm. I need help with the...
  4. ERIMechEng

    Working with magnets in an assembly

    My objective is to design a non-frictional eddy current brake system using a series of permanent magnets affixed to a fixed plate that is held a short distance away from a rotating plate. I think the basic design concept will work, but I've never worked with magnets in an assembly before: 1)...
  5. ERIMechEng

    Bearing Selection

    First off, a preemptive thank you for anyone willing to help. I'm trying to find a maintenance-free bearing that will handle axial and thrust loads. I suppose an ideal solution would be a sealed, sheilded tapered roller bearing, but I can't find any. Shaft dia: about 1", low speed, 2000 lb...

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