Elmo Rietschle G-BH7 Operating instructions - Manual (Page 10)

Technical Data
610.44436.40.000 10 / 28 © Gardner Denver Deutschland GmbH
Tightening torques for screw connections
The following values apply if no other information
is available.
With non-electrical connections, property classes
of 8.8 and 8 or higher as per ISO 898-1 are
assumed.
Tightening torques for
non-electrical
connections
Thread [Nm] [ft lbs]
M4 2.7 - 3.3 1.99 - 4.44
M5 3.6 - 4.4 2.65 - 3.25
M6 7.2 - 8.8 5.31 - 6.5
M8 21.6 - 26.4 15.9 - 19.5
M10 37.8 - 46.2 27.9 - 34.1
M12 63.0 - 77.0 46.5 - 56.8
The following information for electrical connection
applies to all terminal board connections with the
exception of terminal strips.
Tightening torques for
electrical
connections
Thread [Nm] [ft lbs]
M4 0.8 - 1.2 0.59 - 0.89
M5 1.8 - 2.5 1.33 - 1.84
Especially for metal and plastic threaded cable
glands and pipe unions, the following values
apply:
Tightening torques for metal
threaded
glands/unions
Thread [Nm] [ft lbs]
M12x1,5 4 - 6 2.95 - 4.43
M16x1,5 5 - 7.5 3.69 - 5.53
M25x1,5 6 - 9 4.43 - 6.64
M32x1,5
M40x1,5
8 - 12 5.9 - 8.85
Tightening torques for plastic
threaded
glands/unions
Thread [Nm] [ft lbs]
M12x1,5 2 - 3.5 1.48 - 2.58
M16x1,5 3 - 4 2.21 - 2.95
M25x1,5 4 - 5 2.95 - 3.69
M32x1,5
M40x1,5
5 - 7 3.69 - 5.16