CALCS PROC020
SLEW RING BOLTS, COMBINED LOADING

NOTATION

Dmnrminor diameter of bolt
Ftallowable stress of bolt
Nboltsnumber of bolts
PCDpitch circle diameter
Pxaxial force
Mzoverturning moment
Pboltmax bolt force

APPLICATION

Jib & Mast Cranes

OUTPUT

Bolt Tension

SEE ALSO

PROC016

THEORY

LR LAME Code

GUIDANCE

Bolt Grade 8.8, 10.9, 12.9, Ft respectively 256, 360, 432MPa

INPUT FORMAT

LET PCD=:Nb=:Px=:Mz=:PROC020

EXAMPLE

Call Statement

LET Nm=1:Nk=1:PCD=180:Nb=48:Px=-200:Mz=4.8E4:PROC020

Output

PROC020 SLEW RING BOLTS, COMB.LOADING, Rev 220995
Pbolt= Px/Nb+4*FNsgn(Px,Mz)*Mz/(Nb*PCD)= -26.39
END020