Required Torque; Calculation Example Axial Sealing - TR-Electronic LMRS_27 Interface-Box SSI Gesamt-Bedienungsanleitung

5.4 Required torque

5.4.1 Calculation example axial sealing

Sensor type with thread M18x1.5,
axial sealing via O-ring 23.47 x 2.62 (No scope of supply!)
LA-42 / LA-65-H / LA-66
A) Required locking force, dependent on the pressure on the flange
15
16
17
B) Required mounting prestressing force, dependent on mounting case
18
19
20
C) Thread geometry and thread friction
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22
23
24
25
26
27
D) Required torque for p = 600 bar
28
(I) see "Maschinenelemente" (Machine elements), Roloff/Matek, table A8-11
(II) see "Maschinenelemente" (Machine elements), Roloff/Matek, table A8-9
(III) see "Maschinenelemente" (Machine elements), Roloff/Matek, table A8-12a
(IV) see "Maschinenelemente" (Machine elements), Roloff/Matek, equation 8.20
1
"oiled easily"
Printed in the Federal Republic of Germany
03/17/2021
p = 600,0 bar
d_Oring = 23,5 mm
F_Kl = 25 957,8 N
ka = 1,6 [-]
kl = 1,2 [-]
F_VM = 49 838,9 N
D = 18,0 mm
P = 1,5 [-]
D2 = 17,03 mm
phi = 0,028 rad
my_k = 0,12 [-]
phi_G= 0,119 rad
ra = 11,7 mm
MA = 133 Nm
TR-ELA-BA-DGB-0004 v16
static hydraulic pressure at the sensor flange

O-ring- , mounting surface
required locking force (related to hydraulic pressure)
Attraction factor for tightening with torque wrench
Loosening factor for static load
Mounting-prestressing force, related to ka and kl
Nominal thread diameter
Thread lead
Pitch diameter
Thread angle
Friction coefficient for thread friction
Angle of friction, see my_k (11)
Friction radius, see O-ring- (2)
Calculated torque (IV)
(I)
(II)
1
(III)
"leicht geölt"
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