Komatsu 930E-4 - Standard Tightening Torques

STANDARDCHARTSANDTABLESSTANDARDTIGHTENINGTORQUES
STANDARDTIGHTENING
TORQUESF .6-0000051233
Class10.9CapscrewsAndClass10Nuts
Thefollowingspecicationsapplytorequired
assemblytorquesforallmetricclass10.9nished
hexagonheadcapscrewsandclass10nuts.
DONOTlubricatecapscrewthreadsandseatsduring
assembly.Thesespecicationsarebasedonthe
followinghardware:
•Allcapscrews
•Allnuts
•Allhardenedwashersbeingphosphateandoil
coated
NOTE:Ifzinc-platedhardwareisused,eachpiece
mustbelubricatedwithsimplelithiumbasechassis
grease(multi-purposeEPNLGI)orarustpreventive
grease(seelist,thispage)toachievethesame
clampingforcesprovidedbelow.
NOTE:Torquesarecalculatedtogiveaclamping
forceofapproximately75%ofproofload.The
maximumtorquetoleranceshallbewithin±10%of
thetorquevalueshown.
Inthefollowingtableunder“CapscrewSize”,therst
numberrepresentstheshankdiameter(mm).The
secondnumberrepresentsthreadpitchinmillimeters.
Example:M20x2.25
M20=shankdiameter(20mm)
2.25=threadpitchinmillimeters
Table2-1
StandardTighteningTorqueforMetric
Class10.9Capscrews&Class10Nuts
Capscrew
Size
Torque
N·m
Torque
ft·lb
Torque
kg·m
M6x11291.22
M8x1.2530223.06
M10x1.5
55
405.61
M12x1.7595709.69
M14x215511415.81
M16x224017724.48
M20x2.2546534347.43
M24x380059081.6
M30x3.516001180163.2
M36x427502028280.5
930E-42-3