← Back to Tools
Inertia Mismatch
Calculate the inertia ratio between a servo motor and its driven load. Essential for tuning high-response CNC axes.
If direct drive, enter 1.
System Stability
Inertia Ratio
: 1
✅ Stable. A ratio under 5:1 is excellent for high-speed CNC contouring. ⚠️ Marginal. Acceptable for point-to-point positioning, but may struggle with tight 3D tolerances without aggressive filtering. ❌ Unstable. Highly susceptible to resonance. Redesign mechanics, increase gear ratio, or select a larger motor.