Lenze DSD - Manual (Page 158)

7 Applications
7.14 Synchronous drive - single roll
158
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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Torque of the application
[7-152] Equation 5: Torque of the application

Tip!
Further equations to complete the calculations required for an application can be found in
the chapter " Basic calculations ". ( 68)
7.14.1.1 Symbols used
7.14.2 Data for the entry
7.14.2.1 Roll diameter
M
App
M
sds
M
μ
J
sum
α ⋅ + + =
Symbol Description Dimension unit
d Diameter of the drive roll mm
F
in
Tension on input side (only positive tensile forces possible) N
F
out
Tension on output side (only positive tensile forces possible) N
J Moment of inertia of the drive roll kgm 2
J
L
Moment of inertia of the effective mass of the material to be conveyed kgm 2
J
sum
Total moment of inertia (rolls/material) kgm 2
S Safety coefficient for the static friction %
M
App
Required torque of the application Nm
M
μ
Friction torque Nm
M
sds
Stationary torque Nm
v Speed of the material m/min
α Angle of wrap °
η
Brg
Mechanical efficiency of the roll bearing
μ
0
Coefficient of friction of the roll surface
Symbol Description
d Outside diameter of drive roll