Page 2-14
Rev. 0040201000 1617
Operating and installation instructions
ZESA
®
/ GESA
®
/ ZIVA
®
-Z / ZIVA
®
-G
7.2 Tightening torques
Bolt torques acc. to Roloff-obtain to 0,9xR
P0,2
and RT
μ
G
= 0,12 / Flange hole acc. to EN1092-1
The actually allowable locking torque can be less than the values shown in the table.This
can depend on the kind of bolt material or lubricant is used.
Minimum depth for ZIVA
®
-G and GESA
®
:
Thread reach l
e
= 1 x d
bolt
(steel, cast steel, nodular iron)
Thread reach l
e
= 1,25 x d
bolt
(cast iron, copper alloy)
7.2.1 Bolt material A4-70
M10
=
29 Nm,
R
P0,2
=
450 N/mm
2
M12
=
52 Nm,
R
P0,2
=
450 N/mm
2
M16
=
128 Nm,
R
P0,2
=
450 N/mm
2
M20
=
249 Nm,
R
P0,2
=
450 N/mm
2
M24
=
238 Nm,
R
P0,2
=
250 N/mm
2
M27
=
351 Nm,
R
P0,2
=
250 N/mm
2
M30
=
477 Nm,
R
P0,2
=
250 N/mm
2
M33
=
645 Nm,
R
P0,2
=
250 N/mm
2
M36
=
829 Nm,
R
P0,2
=
250 N/mm
2
