Lenze DSD - Manual (Page 166)

7 Applications
7.15 Synchronous drive of squeegees
166
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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7.15.2.5 Leverage of rolling friction, lower roll
7.15.2.6 Leverage of rolling friction, upper roll
7.15.2.7 Efficiency, roll mechanics
7.15.2.8 Moment of inertia of the rolls
Symbol Description
f
1
Lever arm of rolling friction
• Used for calculating the rolling resistance of the rolls with regard to the web.
• Value can be entered directly or selected from the "Physical coefficients" table.
Lever arm of rolling friction
Symbol Description
f
2
Lever arm of rolling friction
• Used for calculating the rolling resistance of the rolls with regard to the web.
• Value can be entered directly or selected from the "Physical coefficients" table.
Lever arm of rolling friction
Symbol Description
η
Brg
Efficiency
• Takes into account the overall mechanical losses, e.g. those resulting from friction between
the material belt and the roller, serrations on the roller etc.
Symbol Description
J Moment of inertia of the drive roll of the material to be conveyed (if relevant), etc.
• The moment of inertia has an effect on the dynamic torque!
• Value can be entered directly or calculated using the inertial calculator.
Inertial calculator ( 407)