Mechanical vibration — Rotor balancing — Part 12: Procedures and tolerances for rotors with flexible behaviour

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Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

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English

Published date

03-29-2016

Publisher

International Organization for Standardization

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
Supersedes	ISO 11342:1998/Cor 1:2000 ISO 11342:1998

Standards	Relationship
DIN ISO 21940-12:2016-09	Identical
SS-ISO 21940-12:2021	Identical
DIN ISO 21940-12 E : 2016	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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ISO 21940-12:2016

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