They cannot be calibrated.  Set pressure is operator dependent.  Tywraps
generally are tightened so the bundle is contained but not to the point that
the insulation is bruised or compromised.
(There may be some slight deformation in the insulation from the tywrap)  A
lot also depends if you are installing a tywarp over shrink sleeving. This
can cause an operator to over tighten the tywrap as they may feel they have
to, to insure the bundle is contained thus damaging the conductor
insulation. ( many a short or broken strands have I seen because of this)

I do not have a tywrap gun near by. but will look one up, and if I can add
more to this I will.

Regards,
Randy Bock Randy Bock Sr.
Quality Manager
Bryce
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----- Original Message -----
From: "Kasprzak, Bill (sys) USX" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, February 19, 2003 9:55 AM
Subject: [TN] Attachment of ty-wraps


> Hello all,
>
> I am looking to find what others are doing with respect to tools used to
> install ty-wraps. These tools enable the user to tighten a ty-wrap then
cuts
> off the excess portion of the wrap. The tension of the tightness is a
> function of the operator to adjust the tool so that the wrap cannot slide
> back and forth when tightened but not so tight to cause noticeable
> indentation or distortion of the wire bundle.
>
> In my opinion this is operator controlled and a pre-set controlled
tightness
> value cannot be assigned for this process. If some pre-set value were to
be
> established, then calibrated ty-wrap tools would be needed. I do no think
> that these tools can be "calibrated" per se.
>
> Does anyone have experience with the controlled use of these tools for
> tightening ty-wraps?
>
> Any and all responses are appreciated. Thanks.
>
> Bill Kasprzak
> Moog Inc. Manufacturing Engineering, Electronics
>
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