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Torque Testing

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Dobe

Dobe

Mechanical
Joined
Oct 1, 2003
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51
Location
US
We are torquing down bolt at between 48 to 54 ft. lbs. If we are consistly getting 50 - 52 what should the breaking point be when we test them? We are also auditing torque angle. I believe that is set between 10-30 degreees. [ponder]
 
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What kind of bolt, in what kind of application?

Typically, structural engineers shy away from torque calibration of bolts because in our world it tends to not be very consistent.
 
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Bolt is M10 x 1.5 6g thd.
Steel-GMW25 (Class 0.9) zinc plated

There are 20 bolts to bolt together the attached assembly used in a transmission.

Includes 3 flexplates, 1 flexplate asy., hub, wearplate and shim
 
 http://files.engineering.com/getfile.aspx?folder=bcba2281-9c67-409c-bcfc-738e35b02da4&file=29558081_Small_hole.jpg
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