Tentec offers top tips on bolt tensioning
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Tentec product story
Edited by the Engineeringtalk editorial team
Nov 17, 2008
Tentec, a designer and manufacturer of bolt tightening equipment, is offering a free four-page guide to using hydraulic bolt tension tools.
Tips on Bolt Tensioning is a five-step guide that gives engineers calculation notes on how to use hydraulic bolt tensioning tools.
Step one begins with how to determine the required bolt load from a known bolt stress.
The document includes a list of useful formulae and design checks that alert engineers to good practice techniques.
Highlighted in red are areas that require particular caution and safety notes remind the equipment users not to exceed maximum pressure and stroke.
Engineers are given generic information that can be transferred to any make of bolt tensioner.
This includes important guidelines on how to determine the Load Transfer Factor, an essential calculation to ensure that a load allowance is made when calculating the required operating pressure of the tensioner.
This is due to the fact that the bolt load is transferred from the tensioner to the joint nuts as a direct result of loss of stud elongation.
Further technical information includes a worked example of how to determine the correct tool pressure to determine the required bolt load.
The document has been written by qualified engineers at Tentec, who said it is a useful accompaniment to Tentec's series of technical literature for the Aero range of tools for wind turbines.
The document is available in hard copy or as an electronic copy that can be downloaded.
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