Nobody has mentioned galling yet?
Aluminum on aluminum threads is asking for trouble, particularly where vibration is present. It's a virtual certainty your threads will gall together, possibly even with an excellent anti-seize compound being used.
That's not to say it can't be done. Just be...
Your design goal is "I want to redesign it to eliminate the need for a central shaft and have the full torque applied on one side while the other side moves freely."
Uh, if the other side is moving freely... it's unconstrained. I'm guessing this is for something like an elevator or rudder. You...
If there's a human nearby when this thing is launched or recovered, I have no idea why you'd eschew manual deployment. Talk about over-complicating it.
Spring loaded locking mechanism and two detent locations. It'll take all of 20s to deploy. Save the weight that would be frittered away on...
I think TugBoatEng already explained this one. Sounds like a seal longevity and fluid compatibility/explosion constraint that really benefits from the additional piston rod seal.
Is the thermistor removed and reinstalled often? What kind of loads is that bracket subject to? I don't see a pressing need for the helicoil. Just tap and bolt directly to the plastic. Use a coarser thread, and possibly a nylon screw.
How certain are you that:
1. The tapped threads are deep...
I would have assumed the 3T load rating had some margin for this kind of unequal loading. What does the caster mfg say? The 3T has perfect distribution?
Remember that changing bearing loads, within reason, is only going to affect bearing life. It maybe a case that the bearings, evenly loaded to...
We use in-line torque sensors between motor and the device under test. It gives us characterization data for the device, and also serves as an e-stop triggering sensor. The devices vary in terms of vibration levels and required torque input, but any changes in torque once things are running is a...
I don't understand how you can begin to model the beam loads without being clear on how the rigging attaches to the beam. Your diagram shows the pull force at the extreme left end of the beam. Is that where it is, or is it centered/distributed? Are we assuming the pull force is applied parallel...
Why not pull from the center of the beam? And possibly add an equalizing chain to the link point from the two D11s so the beam always sees tension from one point, with a slightly varying angle if the movers start/stop independently? then you only need to reinforce the link point.
As shown, this...
I think I'd lean towards making a jig to present the part for inspection "as installed". I'm assuming you're concerned about the ID functioning to seal. Get it "installed" and have a band of steel or something to measure the ID based on the ring gap or something, and also have a "go" gauge...
I worked in an office that went from high cubes + lab space on the same floor, to lab space downstairs and the office became the low/mid cubes. We had mid height walls on the sides of our desks, but the front was low. Then we were organized opposite who we collaborated most with. You could just...
I try to keep my material requirements as simple as possible. I usually specify with UNS values. If it's something I feel the manufacturer may have a hard time obtaining (shape or grade), I'll write out acceptable alternatives in a note. If even that isn't broad enough, there will be another...
I think you need to be more explicit about what the requirements are.
First it was a 2 hole plate. Now it's 3. First is was 1000 rpm, now that's not the test speed. All this for a test rig? How long is the test actually going to take? Can it take longer and run at lower speed? You mentioned a...
You're looking at 6.6m/s surface speed for that seal near the OD, even at your lower stated speed. That's not nothing. You'll want to find something PTFE-based most likely, and be okay with it melting a bit. I'd be worried about the seal moving in the groove and generating even more heat.
Why...
I have used them before in prototype quantities for a static, low pressure application.
I would trust the manufacturer to do a much better job than I can in house with one of those vulcanizing kits. I would not trust them for a dynamic application. If you really need a custom size, get a custom...
I'm a design engineer. I do prototype pumps, compressors, or the test rigs for such things. I also have designed a planetary speed reducer and some high pressure Stirling Engines. I have 6yrs experience.
Lots of my stuff begins and ends in MS Excel. Provided you have a solid understanding of...
Likely somewhere between 0.2Nm and 20000Nm, based on the description of the problem so far.
Details fer chrissakes. So far, we know you have some things moving and other things not moving. Fantastic.
Are they M2 bolts, or M24? What material? What grade or that material? What are they clamping...
Run the strap out the back and underneath the base of the cube. I don't see doors on the cube, and even if there were... what looks to be a velcro attachment point in the middle of the strap could still live inside the cubby with the clothes in it. You said no new parts, but if the existing...
