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101

7Applications

7.11 Roller conveyor

140

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23

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7.11.1.1 Symbols used

7.11.2 Data for the entry

7.11.2.1 Diameter of the transport rolls

Symbol Description Dimension unit

a Acceleration (translatory) m/s

aux

Diameter of the transport rolls mm

Brg

Bearing diameter mm

f Lever arm of rolling friction mm

Friction force N

Lifting force N

add

Additional force (e. g. backing force) N

f Lever arm of rolling friction

g Gravitational acceleration (g = 9.81 m/s

)m/s

aux

Moment of inertia of transport rollers kgm

sum

Total moment of inertia kgm

l Conveying length m

Mass of the payload kg

m’

Mass of the line load kg/m

add

Additional mass (e. g. by deflectors) kg

App

Required torque of the application (without losses) Nm

sum

Required torque of the application (with losses) Nm

sds

Stationary torque Nm

sPath (translatory) m

v Speed (translatory) m/s

α Angular acceleration rad/s

β Angle of tilt °

sum

Total chain efficiency

Chn

Efficiency of one chain

ϕ Angle rad

Coefficient of friction of the load/roll

Brg

Coefficient of friction of the bearing

ω Angular velocity rad/s

Symbol Description

aux

Outside diameter of feed rolls

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 495 496

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