A-14
MDrive34Plus Motion Control Hardware Manual Revision R080106
Planetary Gearbox Inertia
In addition to System Inertia, the Planetary Gearbox inertia must also be included when matching system
inertia to motor inertia. The Planetary Gearbox inertia varies with the ratio and the number of stages.
The table below lists the inertia values for the MDrive14, 17, 23 and 34 Planetary Gearbox. The values
are in oz-in-sec
2
(ounce-inches-second squared). To calculate the inertia in kg-cm
2
(kilograms-centimeter
squared) multiply oz-in-sec
2
by 70.6154.
Stages
Rounded
Ratio
1-Stage
4:1
5:1
7:1
2-Stage
14:1
16:1
18:1
19:1
22:1
25:1
27:1
29:1
35:1
46:1
3-Stage
51:1
59:1
68:1
71:1
79:1
93:1
95:1
100:1
107:1
115:1
124:1
130:1
139:1
150:1
169:1
181:1
195:1
236:1
308:1
MDrive 34
Gearbox
0.00233660
0.00154357
0.00128867
0.00219499
0.00179847
0.00182679
0.00141612
0.00148693
0.00177015
0.00148693
0.00124619
0.00126035
0.00126035
0.00218082
0.00178431
0.00179847
0.00147276
0.00179847
0.00124619
0.00147276
0.00148693
0.00124619
0.00148693
0.00124619
0.00124619
0.00144444
0.00124619
0.00126035
0.00124619
0.00126035
0.00126035
0.00126035
Planetary Gearbox Inertia Moments (oz-in-sec
2
)
Table B.2: Planetary Gearbox Inertia Moments
Summary of Contents for MDrive 34 Plus Series
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