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Help Choosing Strain Relief?

post #1 of 5
1/8/10 at 12:25am
Thread Starter 
I'm looking for a strain relief, such as Mouser 561-MP3P4, 561-MP2M4, etc. for a project. I'll be using it with some sort of star-quad cable (Mogami, Canare, etc. whatever). I'm not sure how to properly size these. I'd prefer a round panel hole. Has anyone ever used one of these with such a cable that could recommend something? I'd prefer this to a grommet with zip tie or something, as I'd like very good resistance to pulling, hence the locking strain relief concept.

Thanks!
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post #2 of 5
1/8/10 at 3:08am
Looking at the datasheet, if you are going to be using starquad, it is ~6mm diameter (.236, a bit smaller for the cable itself), so the round ones I think are the ones you want to look at. I think you want to go smaller than the cable size, so maybe the 561-MP2M4 (.156 x .187). If that is too small, maybe 561-MP5N4 (.250 x .250).

I've use the liquid tight strain reliefs like the Heyco also, though they are physically a bit large. They work well though.

http://www.mouser.com/catalog/catalogUSD/640/1852.pdf
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post #3 of 5
1/8/10 at 6:01pm
Thread Starter 
Thanks Chris. I guess I was confused, as there is a piece that clamps down on the cable that I wasn't sure how to size... one part is like a E and the other like a backwards C. Anyways, I ordered the above and we'll just have to see if they work
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post #4 of 5
1/14/10 at 1:15am
Thread Starter 
Well, they arrived. The smaller one is definitely too small. However, I cannot convince myself they will work in a round hole?! Seems that the hole needs to be D shaped?
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post #5 of 5
1/14/10 at 2:29am
They work in round holes (as shown in the datasheet). Faith
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