9.6.1 Drive selection
Drive selection for gear units
Determine the gear unit size
Determine the actual acceleration
torque M2acc* and the actual
equivalent torque M2eq* at the
gear unit output
Choose a gear ratio and determine the
actual average input speed n1m* and
the actual maximum input speed n1max*
Determine the actual
emergency off torque M2NOT*
Gear unit selection ended
Select a
larger gear unit
Select a smaller gear ratio
and, where appropriate, a
larger motor
No
No
Select a
larger gear unit
No
No
Yes
Yes
Yes
F2ax* ≤ F2axN
F2rad,acc* ≤ F2rad,acc
F2rad,eq* ≤ F2radN
M2k,acc* ≤ M2k,acc
M2k,eq* ≤ M2kN
Yes
Determine the actual
shaft load
Drives must be selected
together with STOBER
for safety reasons.
Safety-related gravity-
loaded axis?
No
Yes
Calculate the forces and tilting torques in the chapter Permitted shaft loads.
Refer to the selection tables for the values for i, n
1maxDB
, n
1maxZB
, M
2acc
(M
2accHT
for reduced backlash), M
2NOT
,
M
2N
and S.
The values for fB
T
, fB
op
, fB
t
and fB
ZB
can be found in the corresponding tables in this chapter.
9.6 Project configuration 9 PHQKright-angle planetary geared motors
290
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