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You can download a sample rod bolt stretch monitoring chart by clicking here. Using a Torque Wrench There are a number of things to consider when using a torque wrench. The "friction factor" changes from one cycle to the next. That is, friction is at its highest value when the fastener ...
For purposes of bolt design, a “rule of thumb” is to size the bolts and select the material for this application such that each of the 2 rod bolts has a strength of approximately 20,000 lbs. (corresponding to the total reciprocating weight). This essentially builds in a nominal safety ...