|
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. The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments. |
 |
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 |
 |
 |
Features
|
 |
|
* Correlation between tightening torque and tension force on standardised bolts1 * Breakaway torque of a bolt joint |
 |
 |
Alternative products
|
 |
|
TM 310 -- Thread Efficiency Testing Equipment
|
|
 |
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 position 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) Position dial gauge: 0...10mm, graduations: 0,01mm |
Dimensions and Weight |
l x w x h: 450x400x260mm Weight: approx. 27kg |
Scope of Delivery |
1 bolt tester complete with switchable ratchet, 1 set of bolts in transparent container, 1 set of instructional material |
Order Details |
040.32000 TM 320 Screw Tester
|
|