BS ISO 21940-1:2019 – TC:2020 Edition
$217.84
Tracked Changes. Mechanical vibration. Rotor balancing – Introduction
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 104 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 66 | National foreword |
| 71 | Foreword |
| 72 | Introduction |
| 73 | 1 Scope 2 Normative references 3 Terms and definitions 4 Fundamentals of balancing 4.1 General |
| 74 | 4.2 Unbalance of a single disc |
| 76 | 4.3 Unbalance distribution 4.4 Unbalance representation |
| 77 | 5 Factors to consider when balancing 5.1 General 5.2 Rotors with rigid behaviour |
| 78 | 5.3 Rotors with flexible behaviour 5.3.1 General 5.3.2 Shaft-elastic behaviour |
| 79 | 5.3.3 Component-elastic behaviour 5.3.4 Settling behaviour 5.4 Examples of rotor behaviours |
| 80 | 6 Selection of a balancing procedure |
| 81 | 7 Unbalance tolerances 7.1 General 7.2 Permissible residual unbalance 7.2.1 General 7.2.2 Permissible residual unbalance for rotors with rigid behaviour 7.2.3 Permissible residual unbalance for rotors with flexible behaviour |
| 82 | 7.3 Vibration limits 7.4 Influence of modes above service speed |
| 83 | 7.5 Factors influencing balancing procedures 7.5.1 General 7.5.2 Tolerances 7.5.3 Speed and support conditions 7.5.4 Initial unbalance 8 Selection of a balancing machine 8.1 General |
| 84 | 8.2 Special requirements |
| 85 | 9 International Standards on balancing 9.1 General 9.2 Vocabulary 9.2.1 ISO 21940‑2 — Balancing vocabulary 9.2.2 ISO 2041 — Vibration and shock vocabulary 9.3 Balancing procedures and tolerances 9.3.1 General 9.3.2 ISO 21940‑11 — Procedures and tolerances for rotors with rigid behaviour |
| 86 | 9.3.3 ISO 21940‑12 — Procedures and tolerances for rotors with flexible behaviour 9.3.4 ISO 21940‑13 — Criteria and safeguards for the in-situ balancing of medium and large rotors 9.3.5 ISO 21940‑14 — Procedures for addressing balancing errors |
| 87 | 9.4 Balancing machines 9.4.1 ISO 21940‑21 — Description and evaluation of balancing machines 9.4.2 ISO 21940‑23 — Enclosures and other protective measures for the measuring station of balancing machines 9.5 Machine design for balancing 9.5.1 ISO 21940‑31 — Susceptibility and sensitivity of machines to unbalance |
| 88 | 9.5.2 ISO 21940‑32 — Shaft and fitment key convention |
| 89 | Annex A (informative) Mathematical and graphical representation of unbalance |
| 96 | Annex B (informative) Examples of different rotor behaviours as indicated on a typical hard‑bearing balancing machine |
| 102 | Bibliography |
