2-48
Engineering Guide CDA3000
2 Drive definition
2.6 Selection of gea-
ring
his section presents the key gearing data in table form. For precise
data regarding design, magnetic flux direction, transmission, play etc.
refer to the various manufacturers’ catalogues.
What points need to be considered in designing the gearing?
• Fitting location conditions (room conditions, temperature, position)
• Max. drive speed
• Max. output torque
• Service factor (the standard gears are designed for uniform load)
• Transversal forces, axial forces
• Circumferential backlash
• Torsional rigidity
2.6.1 Transmission
gear
Insertion of a transmission gear stage between the geared motor and the
output shaft results in different gear output speeds and torques.
(1) Transmission gear with chain wheels
Figure 2.26 Transmission gear
Practical tip
➢ In practice the transmission gear is usually implemented by way of
toothed belts
i
max
≈ 4, i
typical
= 2 to 3
➢ i
tot
= i
v
. i
G
i
v
Transmission gear reduction
i
G
Gear reduction
(1)
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