11 Maintenance - General Information
11.2 Tightening torques
62
EasyCut F 320 M
Original Operating Instructions 150000808_01_en
X Strength class
5.6 8.8 10.9 12.9
Tightening torque (Nm)
M4 2.5 3.5 4.1
M5 4.7 7 8
M6 8 12 15
M8 20 29 35
M10 23 39 58 67
M12 34 68 100 116
M14 108 160 188
M16 168 248 292
M20 340 488 568
Locking screws on the gearboxes
INFORMATION
The tightening torques only apply to assembly of locking screws, viewing glasses, ventilation
and breather filters and bleed valves in gearboxes with cast housings or aluminium or steel
housings. The term “locking screw” includes the drain plug, the inspection screw as well as
the ventilation and breather filters.
The table only applies to locking screws with external hexagon together with copper seal ring
and for bleed valves made of brass with shaped seal ring.
Thread Locking screw and viewing glass with
copper ring*
)
Ventilation/breather filter made of
steel
Bleed valve made of brass
Ventilation and breather filter made of
brass
Steel and cast Aluminium Steel and cast Aluminium
Maximum tightening torque (Nm) (±10 %)
M10x1 8
M12 x 1.5 14
G1/4“ 14
M14 x 1.5 16
M16 x 1.5 45 40 24 24
M18 x 1.5 50 45 30 30
M20 x 1.5 32
G1/2“ 32
M22X1.5 35
M24x1.5 60
G3/4“ 60
M33x2 80
G1“ 80
M42x1.5 100
G1 1/4“ 100
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