CKD AX Series Instruction Manual page 16

(3) Anti-vibration Using Dummy Inertia Plate
When sufficient rigidity is not available for a machine, a dummy inertia plate at the
nearest position to the actuator will help reduce resonance with the machine. The
following explains the installation of a dummy inertia plate. The diameter of the extension
shaft should be Ø60mm or over for models with 45N-m or larger maximum output
torques, Ø90mm or over for 70 to 300N-m models, or Ø150mm or over for 500N-m
models.
Before Dummy Inertia Installation
Guideline for the magnitude of a dummy inertia is: Load inertia x (0.2 to 1).
Connections by belts, a gear, a spline, and a key will cause machine rigidity to be
reduced. In such instance, dummy inertia should be assumed to be load inertia x (0.5 to
2). When speed is reduced using belts or gear, load inertia should be the value
converted by the actuator output axis, and dummy inertia plate should be installed at the
actuator side.
Before Dummy Inertia Installation
Gear
Discontinue
Dummy inertia
Fig. 2.3 Dummy Inertia Installation 1
Fig. 2.4 Dummy Inertia Installation 2
— 2-3 —
After Dummy Inertia Installation
After Dummy Inertia Installation
Dummy inertia
2
INSTALLATION
[SMB-14E]