conversion of torque to force
conversion of torque to force
(OP)
Can someone tell how much is the force applied by a 1.5 inch dia bolt torqued to 420 N.m (Newton.meter) ?
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conversion of torque to force
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conversion of torque to forceconversion of torque to force(OP)
Can someone tell how much is the force applied by a 1.5 inch dia bolt torqued to 420 N.m (Newton.meter) ?
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RE: conversion of torque to force
RE: conversion of torque to force
T = F/1000 [p/2pi + u(Rm+r)]
where
T = Torque Nm
F = Bolt Load N
p = thread pitch mm
u = coeff friction (0.1 to 0.2 typically)
Rm = mean thread radius mm
r = mean nut bearing radius mm
u will vary considerably depending on type of lubricant, finish and fit of threads.
RE: conversion of torque to force
jt
RE: conversion of torque to force
I used some on-line calculators and arrived at 5.6 Tons. Is this right ?
RE: conversion of torque to force
Keep in mind that translating torque on nuts to force on a bolt is a very rough calculation. There are too many details involved (friction/lube, tolerances, temperature, phase of the moon) to pretend that the correlation is extremely accurate. Close enough usually is. If not, use stud tensioners, direct tension indicators, etc.
jt
RE: conversion of torque to force
RE: conversion of torque to force
phase of the moon ???
Yeah, it get the picture ... it is a very rough calculation.
RE: conversion of torque to force
where:
T = in lb
d = nominal size of a UNC bolt (e.g. .75 for a 3/4-10 bolt)
W = lb of induced load