Screw Tester Apparatus

Screw Tester Apparatus

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Product Description

Screw Tester Apparatus

Technical Description of Screw Tester Apparatus

The main element of the unit is a slotted, elastically deformable steel block. By tightening the bolt joint, the slotted area is deformed, thereby generating an axial tension force in the bolt. The resulting deformation is recorded by a mechanical dial gauge, and is directly related to the bolt tension force generated. The bolt joint is tightened and slackened using a special torque wrench, which can be set sensitively with the aid of a threaded spindle. By using an axial bearing, the head friction of the bolt can be largely excluded, so that only the friction of the threaded joint is measured.

Specification of Screw Tester Apparatus

 

  • Experiment on the correlation between the tension force and tightening torque of bolts
  • Bolt size M8x100, wrench jaw size 13mm
  • Elastic deformation of a slotted block by the bolt
  • Determining the tightening and breakaway torque with a mechanical torque measuring device
  • 2 position dial gauges
  • Sensitive torque setting by hand wheel

 

Technical Data of Screw Tester Apparatus

 

  • 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)
  • Position dial gauge: 0...10mm, graduations: 0,01mm

 

 Dimensions and Weight of Screw Tester Apparatus

 

  • l x w x h: 450x400x260mm
  • Weight: approx. 27kg

 

                


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