breakaway torque of a bolt joint
| Code | TM320 |
Description:
- 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.
Technical details:
Specifications:
- 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 dial gauges
- sensitive torque setting by hand wheel
Technical Data:
- Tension force:
- 40kN
- Force/travel constant:
- 20kN/mm (on slotted block)
- tightening torque:
- 40Nm
- Torque/travel constant:
- 10Nm/mm (on torque measuring device)
- Dial gauge:
- 0…10mm
- graduation: 0,01mm
Dimensions & Weight:
- L x W x H: 450x400x260mm
- Weight: approx. 27kg
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
Scope of Delivery:
- 1 experimental unit
- 1 set of bolts in transparent container
- 1 set of instructional material
Features:
- correlation between tightening torque and tension force on standardised bolts
Accessories:
· optional:
– WP 300.09 Laboratory trolley
Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.
