Quick Disconnect Shaft Coupling
Quick Disconnect Shaft Coupling
(OP)
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 coupling mechanism. Must be manually operated - no elec, hyd, or pneumatics available. Also, need something maintenance free (or very low maintenance). I would prefer something off-the-shelf.
I have found something that will probably do the job:
http:/ /www.dayto nsuperiorp roducts.co m/coupling s/disengag eable-coup lings.html
but I was looking for any alternatives. Any ideas?
/R - Matt
I need help with the coupling mechanism. Must be manually operated - no elec, hyd, or pneumatics available. Also, need something maintenance free (or very low maintenance). I would prefer something off-the-shelf.
I have found something that will probably do the job:
http:/
but I was looking for any alternatives. Any ideas?
/R - Matt





RE: Quick Disconnect Shaft Coupling
Here is a company that I have used in the past with good success. This style is usually pretty inexpensive and the rubber inset life will vary with the amount of misalignment that you have in the setup.
http://www
RE: Quick Disconnect Shaft Coupling
Correct: Neither the loaded nor the brake shaft will be moving until both are coupled together.
I've seen some of those spider coupling devices, but the problem with those is that the device can't be coupled unless there is some axial movement of one of the two shafts.
What I need to be able to do is bring the loaded shaft down and bring it parallel with the brake shaft. Then I need to couple to the brake shaft - the shafts cannot move in the axial direction.
Also - and maybe I should have said this before - I would prefer a device that has no "loseable" parts. What I mean is I have to try to minimize the number of small parts that can be misplaced.
RE: Quick Disconnect Shaft Coupling
RE: Quick Disconnect Shaft Coupling
I'm not trying to be difficult, NomLaser, and I really appreciate the suggestions.
RE: Quick Disconnect Shaft Coupling
RE: Quick Disconnect Shaft Coupling
That might work, but all of the friction disk clutches I've seen have a housing that surrounds both the friction and mating disks, This means that I can't "drop in" the loaded shaft.
RE: Quick Disconnect Shaft Coupling
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RE: Quick Disconnect Shaft Coupling
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Russell Giuliano
RE: Quick Disconnect Shaft Coupling
RE: Quick Disconnect Shaft Coupling
Nice suggestion, though I'm a little concerned about the fragility of exposed magnets in this setting.
Thank you to all who have responded. I'm going to have to come up with a design solution by the end of the week, so (if ya'll care) I'll be posting the resolution next week.
RE: Quick Disconnect Shaft Coupling
Old style chucks had a simple sleeve that would slide axially to open one side of the female square and slide back to trap the male square. These, however, could be open in the upside-down position allowing the shaft to drop out. Safety chucks can only be opened in one position and will self close when the shaft rotates. The key search term is "safety chuck".
RE: Quick Disconnect Shaft Coupling
RE: Quick Disconnect Shaft Coupling
Here are two chucks that I'm familiar with, the Super Chuck and the Nexen.
I'm partial to Super Chuck as I got a $1500 suggestion award for replacing the existing very unsafe ones.
http://www.super-chuck.com/
http://www.nexengroup.com/sc/
RE: Quick Disconnect Shaft Coupling
http:/
RE: Quick Disconnect Shaft Coupling
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Exellent recommendation. Now I've gotta figure out how I'm going to clamp the square shaft to the spool. Incidentally, it's a 2 foot dia cable spool, full weight 900 lbs. 18" wide. Center of the spool has a steel-lined 1-17/32" dia center core.
RE: Quick Disconnect Shaft Coupling