[dsg-hallb_rich] [EXTERNAL] Re: Alternate possibility for RICH mirror springs

Marco Mirazita Marco.Mirazita at lnf.infn.it
Mon Sep 27 09:56:02 EDT 2021


Hi Tyler,
maybe you can clarify the point by speaking with them?
There is also a problem with the dimensions of this one
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.grainger.com_product_SPEC-2DCompression-2DSpring-2DMusic-2DWire-2D781KD9&d=DwICAg&c=CJqEzB1piLOyyvZjb8YUQw&r=Ry65GV1L9CI4W-wouYF1Yh0O9PuhLc4ZWUkBi_Op2h8&m=s-ZV6-XoXWtIw0RlUIraomxwWiRnZNIQ-mCQ7iORX9o&s=KlvkgMkkkcNkru7XufKfFgB-ff5QTGxMz-RnwO4gLww&e= 
that I guess should replace the D22550, the Grainger has wire diameter 
half of the DIM.
Marco




Il 2021-09-27 15:28 Tyler Lemon ha scritto:
> Hello Marco Mirazita,
> 
>  There has not been any progress on the procurement of the springs for
> the RICH spherical mirror support.
> 
>  As a backup I started looking again at different websites for the
> springs and revisited the ones on Grainger.com that I initially sent
> you.
> 
>  
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.grainger.com_product_SPEC-2DCompression-2DSpring-2DMusic-2DWire-2D781KU9&d=DwICAg&c=CJqEzB1piLOyyvZjb8YUQw&r=Ry65GV1L9CI4W-wouYF1Yh0O9PuhLc4ZWUkBi_Op2h8&m=s-ZV6-XoXWtIw0RlUIraomxwWiRnZNIQ-mCQ7iORX9o&s=CC11-EAllr89v7foIk6AGiMrJmPDAsoB3o-V-_UzGqs&e= 
> 
>  
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.grainger.com_product_SPEC-2DCompression-2DSpring-2DMusic-2DWire-2D781KD9&d=DwICAg&c=CJqEzB1piLOyyvZjb8YUQw&r=Ry65GV1L9CI4W-wouYF1Yh0O9PuhLc4ZWUkBi_Op2h8&m=s-ZV6-XoXWtIw0RlUIraomxwWiRnZNIQ-mCQ7iORX9o&s=KlvkgMkkkcNkru7XufKfFgB-ff5QTGxMz-RnwO4gLww&e= 
> 
>  I am somewhat confident that these springs are the same as the ones
> from dim.molle.com. In the attached screenshot from Grainger, the
> manufacturer model number is the same as dim.molle.com's and the ends
> of the springs are specified to be squared and ground. The photo shown
> on Grainger seems to be a generic spring picture since all springs in
> the "alternate products" section on the site have the same photo.
> 
>  My suggestion is to submit another PR for the springs we need from
> Grainger. From my past orders from Grainger, they are pretty quick
> about delivering items and items usually arrive within one week. If
> the springs we get from Grainger are what is needed, then we are done
> and we cancel the original procurement. If the springs from Grainger
> do not have the flattened ends, then we can return them for a refund
> and wait on the original procurement.
> 
>  -Tyler
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