Screw connections testing Correlation between tightening torque and tension force on standardised bolts Features - correlation between tightening torque and tension force on standardised bolts - breakaway torque of a bolt joint Learning objectives/experiments - axial tension force in a bolt joint dependent on the tightening torque or the elastic deformation of a slotted block - measurement of the breakaway torque, including for different fitting situations of the bolt joint - measurement of thread friction and overall friction Specification [1] experiment on the correlation between the tension force and tightening torque of bolts [2] bolt size M8x100, wrench jaw size 13mm [3] elastic deformation of a slotted block by the bolt [4] determining the tightening and breakaway torque with a mechanical torque measuring device [5] 2 dial gauges [6] sensitive torque setting by hand wheel Technical data Tension force - max. 40kN Force/travel constant - 20kN/mm (on slotted block) Max. tightening torque - 40Nm Torque/travel constant - 10Nm/mm (on torque measuring device) Dial gauge - 0...10mm - graduation: 0,01mm LxWxH: 450x400x260mm Weight: approx. 27kg