Palfinger PSM400-16, Installation Manual

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CHAPTER 3
11
(µ=0,06 ...... 0.1)
Screw diameter
Hydraulic MD torque
wrench
MD torque wrench Hydraulic MD torque
wrench
MD torque wrench
8.8 8.8 10.9 10.9
M12 -25%...-30% -25%...-30% -25%...-30% -25%...-30%
M14 -25%...-30% -25%...-30% -25%...-30% -25%...-30%
M16 -28%...-32% -28%...-32% -28%...-32% -28%...-32%
M18 -28%...-32% -28%...-32% -28%...-32% -28%...-32%
M20 -30%...-34% -30%...-34% -30%...-34% -30%...-34%
M24 -30%...-34% -30%...-34% -30%...-34% -30%...-34%
M27 -30%...-34% -30%...-34% -30%...-34% -30%...-34%
M30 -30%...-34% -30%...-34% -30%...-34% -30%...-34%
The reduced values depend on lubrication and other influencing factors.
If you intend to avoid exceeding 90% of the screws’ yield point deduct half of the tolerance width of the used
pretension measuring device or torque tool from the specified values.
Maximum permissible initial tensions [kN]:
Screw diameter Initial tension [kN] Initial tension [kN]
8.8 10.9
M12 33.4 47
M14 45.5 64.6
M16 63.2 93.3
M18 76.8 110
M20 100 145
M24 142.3 210
M27 190 273
M30 230 320
Please note: The minimum screw length must be guaranteed.
Furthermore, the contact areas (between screw head and HV disk and between the components) must not be
painted or oiled. Status: Blank!
Regarding possible exceptions, please, contact your PALFINGER MARINE partner.