4-Run Method Rotor Balancing — No Phase, No Tachometer | Worked Example

What do you do when you need to balance a rotor but don't have a tachometer — or the phase reading won't settle? You use the 4-Run Method. Four amplitude readings. No phase. No tachometer. Same accuracy as the standard method. In this video we go through the complete procedure including a worked example with real numbers — graphical circle method AND calculator shortcut. ✅ What you'll learn: When to use the 4-Run Method (and why it works without phase) The complete 4-run procedure step by step How to use Graphical circle method with real values How to calculate correction weight and angle The calculator shortcut — using your analyser's No-Phase mode ⏱️ Timestamps: 0:00 — Introduction 1:06 — When to Use the 4-Run Method 2:12 — The Concept 3:11 — Setup & Run 1 — Initial Reading 4:12 — Run 2 — Trial weight at 0° 5:10 — Run 3 — Trial weight at 120° 5:30 — Run 4 — Trial weight at 240° 6:45 — Graphical Circle Method — Step by Step 10:17 — Calculate Correction Weight 11:17 — Calculator Shortcut 12:00 — Quiz (3 Questions) 13:10 — Outro 🔔 Subscribe to Skill Torque: 👉 www.skilltorque.com 📚 Balancing Series (Part of VA Series): ▶ Part 15 — Rotor Balancing Explained — Types of Unbalance & Vibration Signatures | Part 1 - Theory: • Rotor Balancing Explained — Types of Unbal... ▶ Part 16 — Single Plane Balancing — Trial Weight, Correction Weight & Trim Explained—Onsite-Practical | Part 2:    • Single Plane Balancing — Trial Weight, Cor...   ▶ Part 17 — 4-Run Method Rotor Balancing — No Phase, No Tachometer | Worked Example: YOU ARE HERE --- Skill Torque — Condition Monitoring & Vibration Analysis explained clearly for working professionals and certification students. #BalancingWithoutPhase #4RunMethod #RotorBalancing #VibrationAnalysis #ConditionMonitoring #SkillTorque #PredictiveMaintenance #ISO18436 #SinglePlaneBalancing #NoTachometer #FieldBalancing