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techtalk:ref:tools123 [2018/07/26 03:37] hippysmack [Torque Wrenches] |
techtalk:ref:tools123 [2020/04/28 21:23] hippysmack [General Torque Specs] |
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| ====== General Torque Specs ====== | ====== General Torque Specs ====== | ||
| - | * Torque specs are usually given in a range (60-70 ft / lbs for example). The fastener should be torqued to the higher figure initially. Then on future torque 'checks', use the lower figure. This allows you to tell if the fastener has maintained needed torque without 'breaking' the bond which keeps it from backing off. ((Wizwill of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&highlight=torque+wrench&page=13)) | + | * Torque specs are usually given in a range (60-70 ft / lbs for example). The fastener should be torqued to the lower figure initially. Then on future torque 'checks', use the lower figure. This allows you to tell if the fastener has maintained needed torque without 'breaking' the bond which keeps it from backing off. ((Wizwill of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&highlight=torque+wrench&page=13)) |
| * In lieu of having torque specs at hand, below are general torque specs for different fasteners. However, nothing takes place of manufacturer torque specs for your specific applications. The torque numbers reflect pressures the bolts can take which doesn't take into account the amount of clamp force for the piece(s) you are clamping (or an aluminum engine). So, it's hard to trust the charts that give a torque values for bolts of a certain size, and then do not specify if the bolt is going into steel or aluminum. With steel bolts going into aluminum (engines), 'ya gotta be careful. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=2048954&highlight=torque+wrench&page=2)) | * In lieu of having torque specs at hand, below are general torque specs for different fasteners. However, nothing takes place of manufacturer torque specs for your specific applications. The torque numbers reflect pressures the bolts can take which doesn't take into account the amount of clamp force for the piece(s) you are clamping (or an aluminum engine). So, it's hard to trust the charts that give a torque values for bolts of a certain size, and then do not specify if the bolt is going into steel or aluminum. With steel bolts going into aluminum (engines), 'ya gotta be careful. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=2048954&highlight=torque+wrench&page=2)) | ||
| * Good engineering books, covering fasteners, will describe the situation in full (bolt diameter, thread pitch, bolt coatings, lubrication used etc.). A lot more information than most of us ever use. Also, in the back of some motorcycle manuals you sometimes will find charts listing common bolts and torque settings. Best to take them with a grain of salt, however. ((Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2048954&highlight=torque+wrench&page=2)) | * Good engineering books, covering fasteners, will describe the situation in full (bolt diameter, thread pitch, bolt coatings, lubrication used etc.). A lot more information than most of us ever use. Also, in the back of some motorcycle manuals you sometimes will find charts listing common bolts and torque settings. Best to take them with a grain of salt, however. ((Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2048954&highlight=torque+wrench&page=2)) | ||
