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The GFC Difference
About Us
Our Leadership
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Careers
Products & Suppliers
Products
Supply Chain Management
Supplier Information
Production Solutions
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Friction Calculator
Friction Calculator
Trent Creative
2018-07-23T11:52:36+00:00
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
FrictionCalculator_DIN 946rev20Augb.xls
|
Total Friction Calculator
|
Thread Friction Calculator
|
Head Friction Calculator
|
Engineering Center
The following equation is for calculating the
TOTAL
friction
coefficient for a nut/bolt assembly per the DIN 946 spec.:
Where:
M
A
Torque required to generate load Fv
F
V
Resulting Tension
P
Pitch
d
2
Bolt thread Pitch Diameter (Major Dia - 0.64952*P)
D
KM
Mean diameter of bearing face of bolt head or nut
Use the following equation to determine D
Km
:
Where:
d
w
Diameter of bearing surface of nut or bolt.
d
h
Clearance hole diameter
Enter the Following Information,
Select the Proper Units and then Click Update Button Below
Units
Select units:
metric
inch series
M
A
=
F
V
=
P
=
d
2
=
D
w
=
D
h
=
Coefficient of friction (
m
fr
)
=
|
Total Friction Calculator
|
Thread Friction Calculator
|
Head Friction Calculator
|
Engineering Center
The following equation is for calculating the
THREAD
friction
coefficient for a nut/bolt assembly per the DIN 946 spec.:
Where:
M
G
Thread component tighening Torque
F
V
Resulting Tension
P
Pitch
d
2
Bolt thread Pitch Diameter
Enter the Following Information,
Select the Proper Units and then Click Update Button Below
Units
Select units:
metric
inch series
M
G
=
F
V
=
P
=
d
2
=
Coefficient of friction (
m
g
)
=
|
Total Friction Calculator
|
Thread Friction Calculator
|
Head Friction Calculator
|
Engineering Center
The following equation is for calculating the
UNDERHEAD
friction
coefficient for a nut/bolt assembly per the DIN 946 spec.:
Where:
M
K
Frictional tightening Torque acting under head
F
V
Resulting Tension
D
KM
Mean diameter of bearing face of bolt head or nut
Use the following equation to determine D
Km
:
Where:
d
w
Diameter of bearing surface of nut or bolt.
d
h
Clearance hole diameter
Enter the Following Information,
Select the Proper Units and then Click Update Button Below
Units
metric
inch series
M
K
=
F
V
=
d
w
=
d
h
=
Coefficient of friction (
m
k
)
=
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