[NSRCA-discussion] Vibration Dampening mounts

[Woodward, Jim (US SSA)]

Thanks John,

 

I have 6/32 well-nuts but have elected not to use them.  For this
installation, it would require too big of a hole for the well nut to fit
in.  I'd rather just have a blind-nut in one side, and thread the stud
into it, then pass a 6/32 through the mount and into the receiving end
of the iso-mount.

 

Thanks,

Jim

 

Jim Woodward

Program Manager

BAE Systems

Land & Armaments

Direct: (954)784-3178

FAX: (954)784-3179

Mobile: (954)319-0873

________________________________

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of John
Pavlick
Sent: Friday, May 23, 2008 10:54 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Vibration Dampening mounts

 

Jim,

 What you're looking for is commonly known as an "isolation" mount. Take
a look here:

http://www.rubber-group.com/isolationmounts.html

I don't know what their minimum quantity requirement is but it looks
like they have just about any size. Let me know if you have any success
with them.

 

For pipe mounting I've been using a different type of mount lately. It's
called a "well nut" or "rivet nut":

http://www.mcmaster.com/nav/enter.asp?pagenum=3214
<http://www.mcmaster.com/nav/enter.asp?pagenum=3214> 

It's a piece of threaded metal encapsulated in rubber. You drill a hole
in the hard-point, insert the well nut, attach your part to the well nut
using a screw and tighten the screw. The well nut swells up on the other
side of the attachment point and retains the part that you're fastening.
It's self locking and you can control the amount of isolation by how
much you tighten the screw. I've had iso-mounts fail (the two halves
will separate) but the well nuts hold up fine. I would suggest replacing
them during your annual maintenance though - I consider them a wear item
like fuel tubing. You can add nylon spacers of different thickness'
between the well nut and the pipe mount to align the pipe too.

 

John Pavlick 

"Woodward, Jim (US SSA)" <jim.woodward at baesystems.com> wrote:

	Hi Guys,
	
	I would like to purchase a rubber isolation mount like what is
used on
	the Dave Brown hush-clamp pipe mounts.
	
	http://www.vibrationmounts.com/Store.asp?Page=Products1.htm here
is a
	link to what they look like. They have some various trade names.
I'm
	having trouble finding them with 6/32 threads, and available for
sale.
	McMaster Carr calls them "Vibration Dampening pads" but does not
have a
	small enough size. 
	
	Does anyone have a reasonable source for these? I have found
them to be
	about $7.00 EACH from stores that published prices.
	
	Thanks,
	Jim W. 
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