Software Owner manual

86 Rockwell Automation Publication MOTION-UM004B-EN-P - October 2012
Chapter 2 Sizing Your System
2.1.2. Rotary Loads
For a rotary application, the load rotates and the system has no translation to
linear motion.
Figure 68 - Rotary Load Type
Table 51 - Rotary Load Parameters
Parameter Description
Primary Inertia
(1)
(1) Use the Inertia Calculator Template on page 105 to calculate the inertia value for your application, if the value is not readily
available.
This is the inertia of any balanced load about the axis of rotation. For example, if the main
mass is a circular table which is driven about its own axis of symmetry, then primary
inertia is equal to the table inertia.
Friction This is the force resisting the relative motion of two surfaces against each other.