ISO 21940-12:2016
Current
The latest, up-to-date edition.
Mechanical vibration — Rotor balancing — Part 12: Procedures and tolerances for rotors with flexible behaviour
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English
03-29-2016
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ISO 21940-12:2016 presents typical configurations of rotors with flexible behaviour in accordance with their characteristics and balancing requirements, describes balancing procedures, specifies methods of assessment of the final state of balance, and establishes guidelines for balance quality criteria.
ISO 21940-12:2016 can also serve as a basis for more involved investigations, e.g. when a more exact determination of the required balance quality is necessary. If due regard is paid to the specified methods of manufacture and balance tolerances, satisfactory running conditions can be expected.
ISO 21940-12:2016 is not intended to serve as an acceptance specification for any rotor, but rather to give indications of how to avoid gross deficiencies and unnecessarily restrictive requirements.
Structural resonances and modifications thereof lie outside the scope of this part of ISO 21940.
The methods and criteria given are the result of experience with general industrial machinery. It is possible that they are not directly applicable to specialized equipment or to special circumstances. Therefore, in some cases, deviations from this part of ISO 21940 are possible.
| DevelopmentNote |
Supersedes ISO/FDIS 21940-12 & ISO 11342. (03/2016)
|
| DocumentType |
Standard
|
| Pages |
33
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
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| Supersedes |
| Standards | Relationship |
| DIN ISO 21940-12:2016-09 | Identical |
| SS-ISO 21940-12:2021 | Identical |
| BS ISO 21940-12:2016 | Identical |
| 17/30368249 DC : 0 | BS ISO 20816-4 - MECHANICAL VIBRATION - MEASUREMENT AND EVALUATION OF MACHINE VIBRATION - PART 4: GAS TURBINES IN EXCESS OF 3 MW, WITH FLUID-FILM BEARINGS |
| BS ISO 7919-3 : 2009 | MECHANICAL VIBRATION - EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON ROTATING SHAFTS - PART 3: COUPLED INDUSTRIAL MACHINES |
| BS ISO 10816-4 : 2009 | MECHANICAL VIBRATION - EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON NON-ROTATING PARTS - PART 4: GAS TURBINE SETS WITH FLUID-FILM BEARINGS |
| 16/30341593 DC : 0 | BS ISO 10816-3 - MECHANICAL VIBRATION - EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON NON-ROTATING PARTS - PART 3: INDUSTRIAL MACHINES WITH NOMINAL POWER ABOVE 15 KW AND NOMINAL SPEEDS BETWEEN 120 R/MIN AND 15000 R/MIN WHEN MEASURED IN SITU |
| BS ISO 20816-2:2017 | Mechanical vibration. Measurement and evaluation of machine vibration Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min and 3 600 r/min |
| BS ISO 21940-11:2016 | Mechanical vibration. Rotor balancing Procedures and tolerances for rotors with rigid behaviour |
| BS ISO 10816-3 : 2009 | MECHANICAL VIBRATION - EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON NON-ROTATING PARTS - PART 3: INDUSTRIAL MACHINES WITH NOMINAL POWER ABOVE 15 KW AND NOMINAL SPEEDS BETWEEN 120 R/MIN AND 15000 R/MIN WHEN MEASURED IN SITU |
| 16/30341590 DC : 0 | BS ISO 7919-4 - MECHANICAL VIBRATION - EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON ROTATING SHAFTS - PART 4: GAS TURBINE SETS WITH FLUID-FILM BEARINGS |
| DIN ISO 21940-11:2016-01 (Draft) | MECHANICAL VIBRATION - ROTOR BALANCING - PART 11: PROCEDURES AND TOLERANCES FOR ROTORS WITH RIGID BEHAVIOUR (ISO 21940-11:2016) |
| ISO 7919-3:2009 | Mechanical vibration — Evaluation of machine vibration by measurements on rotating shafts — Part 3: Coupled industrial machines |
| 16/30341596 DC : 0 | BS ISO 10816-4 - MECHANICAL VIBRATION - EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON NON-ROTATING PARTS - PART 4: GAS TURBINE SETS WITH FLUID-FILM BEARINGS |
| ISO 20816-2:2017 | Mechanical vibration — Measurement and evaluation of machine vibration — Part 2: Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min and 3 600 r/min |
| ISO 7919-4:2009 | Mechanical vibration Evaluation of machine vibration by measurements on rotating shafts Part 4: Gas turbine sets with fluid-film bearings |
| ISO 21940-11:2016 | Mechanical vibration Rotor balancing Part 11: Procedures and tolerances for rotors with rigid behaviour |
| BS ISO 7919-4 : 2009 | MECHANICAL VIBRATION - EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON ROTATING SHAFTS - PART 4: GAS TURBINE SETS WITH FLUID-FILM BEARINGS |
| ISO 10816-4:2009 | Mechanical vibration Evaluation of machine vibration by measurements on non-rotating parts Part 4: Gas turbine sets with fluid-film bearings |
| ISO 21940-14:2012 | Mechanical vibration — Rotor balancing — Part 14: Procedures for assessing balance errors |
| ISO 2041:2009 | Mechanical vibration, shock and condition monitoring Vocabulary |
| ISO 1925:2001 | Mechanical vibration Balancing Vocabulary |
| ISO 21940-32:2012 | Mechanical vibration — Rotor balancing — Part 32: Shaft and fitment key convention |
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