Lenze DSD - Manual (Page 96)

7 Applications
7.5 Rack drive
96
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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Consideration of radial forces
Depending on the bearing, radial forces may occur in a rack drive which act on the gear shaft at the
output end of the gearbox. DSD does not check whether the radial forces exceed limit values. This
must be checked manually. The radial forces must be considered in the drive dimensioning.
Consideration of axial forces
In the case of racks and pinions with helical bearings, axial forces occur which act on the shaft bear-
ings at the output end of the gearbox or at the motor. DSD does not check whether the axial forces
exceed limit values. This must be checked manually. The axial forces must be considered in the drive
dimensioning.
Required torque of the application
During the calculation of the required torque of the application additional moments of inertia, like
for example that of the pinion or of additional shafts, are also taken into consideration.
[7-50] Equation 11: Required torque of the application

Tip!
Further equations to complete the calculations required for an application can be found in
the chapter " Basic calculations ". ( 68)
M
App
d
Cog
2000
------------- F
App,η
⋅ J
add
α ⋅ + =