4
Use of Extensions and Adapters
:KHQXVLQJDQH[WHQVLRQRUDGDSWHULQFUHDVLQJWKHHIIHFWLYHOHQJWKRIWKHWRUTXHZUHQFKWKHRXWSXWWRUTXHYDOXHZLOOFKDQJH
To calculate the new torque output of the torque wrench, use the following:
NOTE:
A number of variables including the length of the adapter or extension, length of the torque wrench, and variations in
hand position on the torque wrench, will affect the accuracy of the above calculation.
TW = Torque wrench scale reading
TA = Torque exerted at end of adapter
L = Distance betweeen square drive and hand position
A = Length of adapter or extension
TW =
TA x L
L=A
Conversion Table
FROM UNIT
TO UNIT MULTIPLY BY
FROM UNIT
TO UNIT MULTIPLY BY
in.-oz.
in-lb
0.0625
dNm Nm
0.1000
16.0000
Nm
cNm 100.0000
0.0834 Nm
.
gf.cm 10.2000
.
gf.cm 1.1519
Nm
.
gf.m 0.1020
m
N
g 0.0116
Nm
8.8500
dNm 0.1130
Nm
0.7376
Nm 1.1300
.
gf.cm 0.8681
in-lb 12.0000
.
gf.cm Nm
0.0981
.
gf.m 0.1382
.
gf.m 86.8100
Nm 1.3560
.
gf.m 7.2360
dNm in-lb
0.8850
.
gf.m Nm
9.8070
in.-lb.
in.-lb.
in.-lb.
in.-lb.
in.-lb.
in.-lb.
in.-lb.
in.-lb.
in.-lb.
ft.-lb.
ft.-lb.
ft.-lb.
ft.-lb.
ft.-lb.
in.-oz.
ft.-lb.
