Hainbuch T812, Руководство по установке, Страница: 59 / 72

Segmented mandrel T812.
Maintenance
english
8.6 Bolt torque
Metric ISO thread The guide values for bolt tightening torque for achieving
the highest permissible pre-tension for metric ISO thread
are specified in Nm in the table.

Total friction coefficient μ
tot
= 0,12

90% utilization of the apparent limit of elasticity
Diameter
[mm]
[mm]
Torque for
screw quality
10.9
[Nm]
M 4 7 3 4
M 5 8 4 7
M 6 10 5 12
M 8 13 6 25
M 10 17 8 50
M 12 19 10 100
M 16 24 14 220
M 20 30 17 400
M 24 36 19 600
The table shows the maximum permissible values and
does not include any other safety factors. Knowledge of
the applicable guidelines and configuration criteria are
the prerequisites.
Order H49 [0]7144. 907-333 59