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ISO 21940-21:2012
Mechanical vibration — Rotor balancing — Part 21: Description and evaluation of balancing machines- 발행일 : 2012-07-10
- 발행기관 : ISO
상세정보
| 분야 | ISO/TC 108/SC 2 : Measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures |
|---|---|
| 적용범위 | ISO 21940-21:2012 specifies requirements for evaluating the performance of machines for balancing rotating components by the following tests: a) test for minimum achievable residual unbalance, Umar test; b) test for unbalance reduction ratio, URR test; c) test for couple unbalance interference on single-plane machines; d) compensator test. These tests are performed during acceptance of a balancing machine and also later on a periodic basis to ensure that the balancing machine is capable of handling the actual balancing tasks. For periodic tests, simplified procedures are specified. Tests for other machine capacities and performance parameters, however, are not contained in ISO 21940-21:2012. For these tests, three types of especially prepared proving rotors are specified, covering a wide range of applications on horizontal and vertical balancing machines. An annex describes recommended modifications of proving rotors prepared in acccordance with ISO 2953:1985. Moreover, ISO 21940-21:2012 stresses the importance attached to the form in which the balancing machine characteristics are specified by the manufacturer. Adoption of the format specified enables users to compare products from different manufacturers. Additionally, in an annex, guidelines are given on the information by which users provide their data and requirements to a balancing machine manufacturer. ISO 21940-21:2012 is applicable to balancing machines that support and rotate rotors with rigid behaviour at balancing speed and that indicate the amounts and angular locations of a required unbalance correction in one or more planes. Therefore it is applicable to rotors with rigid behaviour as well as to rotors with shaft-elastic behaviour balanced in accordance with low-speed balancing procedures. It covers both soft-bearing balancing machines and hard-bearing balancing machines. Technical requirements for such balancing machines are included; however, special features, such as those associated with automatic correction, are excluded. ISO 21940-21:2012 does not specify balancing criteria; such criteria are specified in ISO 1940-1 and ISO 11342 (only low-speed balancing procedures apply). |
| 국제분류(ICS)코드 | 21.120.40 : 평형 및 균형 시험기 |
| 페이지수 | 53 |
| Edition | 1 |
이력정보
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ISO 21940-21:2022상세보기 | Mechanical vibration — Rotor balancing — Part 21: Description and evaluation of balancing machines | 2022-11-07 | 표준 |
| 2 | ISO 21940-21:2012상세보기 | Mechanical vibration — Rotor balancing — Part 21: Description and evaluation of balancing machines | 2012-07-10 | 구판 |
관련상품
- ISO 21940-13:2012 - Mechanical vibration — Rotor balancing — Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors
- ISO 21940-32:2012 - Mechanical vibration — Rotor balancing — Part 32: Shaft and fitment key convention
- ISO 21940-23:2012 - Mechanical vibration — Rotor balancing — Part 23: Enclosures and other protective measures for the measuring station of balancing machines
- ISO 21940-14:2012 - Mechanical vibration — Rotor balancing — Part 14: Procedures for assessing balance errors
- ISO 21940-31:2013 - Mechanical vibration — Rotor balancing — Part 31: Susceptibility and sensitivity of machines to unbalance
다른 사람이 함께 구입한 상품
- ISO 21940-23:2012 - Mechanical vibration — Rotor balancing — Part 23: Enclosures and other protective measures for the measuring station of balancing machines
- ISO 21940-13:2012 - Mechanical vibration — Rotor balancing — Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors
- ISO 21940-31:2013 - Mechanical vibration — Rotor balancing — Part 31: Susceptibility and sensitivity of machines to unbalance
- ISO 21940-14:2012 - Mechanical vibration — Rotor balancing — Part 14: Procedures for assessing balance errors
- ISO 21940-32:2012 - Mechanical vibration — Rotor balancing — Part 32: Shaft and fitment key convention
추천 상품
- IEC TS 63134:2020 - Active assisted living (AAL) use cases
- IEC 60034-5:2020 RLV - Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification
- KS B ISO TS 25740-1 - 에스컬레이터 및 무빙워크에 대한 안전요건 — 제1부: 세계공통 필수 안전요건(GESRs)
- KS B ISO TS 8100-21 - 승객 및 화물 운송용 엘리베이터 —제21부: 세계공통 필수안전요건(GESRs)을 충족하는 세계공통 안전 파라미터(GSPs)
- KS C IEC TS 62872 - 산업 시설과 스마트 그리드 사이의 산업 공정 측정, 제어 및 자동화 시스템 인터페이스
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