Schemata, Tables, Diagrams

Principle of Schemata


As supplier of complete systems, we as SCHAAF regard ourselves obliged to be our customers' consultant in all aspects of bolt tensioning. Therefore, we produce various schemata, tables, diagrams and calculations on your request.

These could be, for example:

  • Tables for the sequence of tightening bolts in several steps
  • Thread calculations -> tolerance considerations
  • Flank clearance calculations
  • Pressure-Force-Diagrams
  • Flow charts
  • Customized documents
If you have any questions in this respect, do not hesitate to contact us.

Example
Example of a sequencing table for tightening a flange
joint with 24 bolts in 3 steps

Bolt Tensioner SSV M36, SCHAAF drawing no. A2834


Operating sequence:

a) number the bolts consecutively
b) tighten the bolts in three steps following the table
c) do a final check patrol

Bolt No. Pressure
1. passage
done Pressure
2. passage
done Pressure
3. passage
done Check patrol
1,13 800   1100   1569    
7,19 800   1100   1569    
4,16 800   1100   1569    
10,22 800   1100   1569    
2,14 800   1100   1569    
8,20 800   1100   1569    
11,23 800   1100   1569    
5,17 800   1100   1569    
12,24 800   1100   1569    
3,15 800   1100   1569    
6,18 800   1100   1569    
9,21 800   1100   1569