{"id":261667,"date":"2024-10-19T17:20:25","date_gmt":"2024-10-19T17:20:25","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-21940-122016-tc\/"},"modified":"2024-10-25T13:07:47","modified_gmt":"2024-10-25T13:07:47","slug":"bs-iso-21940-122016-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-21940-122016-tc\/","title":{"rendered":"BS ISO 21940-12:2016 – TC"},"content":{"rendered":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
63<\/td>\nForeword <\/td>\n<\/tr>\n
65<\/td>\nIntroduction <\/td>\n<\/tr>\n
67<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
68<\/td>\n4 Fundamentals of dynamics and balancing of rotors with flexible behaviour
4.1 General
4.2 Unbalance distribution
4.3 Mode shapes of rotors with flexible behaviour <\/td>\n<\/tr>\n
69<\/td>\n4.4 Response of a rotor with flexible behaviour to unbalance <\/td>\n<\/tr>\n
70<\/td>\n4.5 Aims of balancing rotors with flexible behaviour <\/td>\n<\/tr>\n
71<\/td>\n4.6 Provision for correction planes
4.7 Coupled rotors
5 Rotor configurations <\/td>\n<\/tr>\n
73<\/td>\n6 Procedures for balancing rotors with flexible behaviour at low speed
6.1 General <\/td>\n<\/tr>\n
74<\/td>\n6.2 Selection of correction planes
6.3 Service speed of the rotor
6.4 Initial unbalance
6.5 Low-speed balancing procedures
6.5.1 Procedure A \u2014 Single-plane balancing
6.5.2 Procedure\u00a0B \u2014\u00a0Two-plane balancing <\/td>\n<\/tr>\n
75<\/td>\n6.5.3 Procedure C \u2014 Individual component balancing prior to assembly
6.5.4 Procedure\u00a0D \u2014\u00a0Balancing subsequent to controlling initial unbalance
6.5.5 Procedure\u00a0E \u2014\u00a0Balancing in stages during assembly <\/td>\n<\/tr>\n
76<\/td>\n6.5.6 Procedure F \u2014 Balancing in optimum planes
7 Procedures for balancing rotors with flexible behaviour at high speed
7.1 General
7.2 Installation for balancing <\/td>\n<\/tr>\n
77<\/td>\n7.3 Procedure G \u2014 Multiple speed balancing
7.3.1 General
7.3.2 Initial low-speed balancing
7.3.3 General procedure <\/td>\n<\/tr>\n
79<\/td>\n7.4 Procedure H \u2014 Service speed balancing <\/td>\n<\/tr>\n
80<\/td>\n7.5 Procedure I \u2014 Fixed speed balancing
7.5.1 General
7.5.2 Procedure
8 Evaluation criteria
8.1 Choice of criteria <\/td>\n<\/tr>\n
81<\/td>\n8.2 Vibration limits in the balancing machine
8.2.1 Overview
8.2.2 General
8.2.3 Special cases and exceptions
8.2.4 Factors influencing machine vibration <\/td>\n<\/tr>\n
82<\/td>\n8.2.5 Critical clearances and complex machine systems
8.2.6 Permissible vibrations in the balancing machine <\/td>\n<\/tr>\n
83<\/td>\n8.3 Residual unbalance tolerances
8.3.1 Overview
8.3.2 General
8.3.3 Limits for low-speed balancing <\/td>\n<\/tr>\n
84<\/td>\n8.3.4 Limits for multiple speed balancing
9 Evaluation procedures
9.1 Evaluation procedures based on vibration limits
9.1.1 Vibration assessed in a high-speed balancing machine <\/td>\n<\/tr>\n
85<\/td>\n9.1.2 Vibration assessed on a test facility
9.1.3 Vibration assessed on site <\/td>\n<\/tr>\n
86<\/td>\n9.2 Evaluation based on residual unbalance tolerances
9.2.1 General
9.2.2 Evaluation at low speed
9.2.3 Evaluation at multiple speeds based on modal unbalances <\/td>\n<\/tr>\n
87<\/td>\n9.2.4 Evaluation at service speed in two specified test planes <\/td>\n<\/tr>\n
89<\/td>\nAnnex\u00a0A (informative) Cautionary notes concerning rotors when installed in-situ <\/td>\n<\/tr>\n
90<\/td>\nAnnex\u00a0B (informative) Optimum planes balancing \u2014 Low-speed three-plane balancing <\/td>\n<\/tr>\n
92<\/td>\nAnnex\u00a0C (informative) Conversion factors <\/td>\n<\/tr>\n
93<\/td>\nAnnex\u00a0D (informative) Example calculation of equivalent residual modal unbalances <\/td>\n<\/tr>\n
96<\/td>\nAnnex\u00a0E (informative) Procedures to determine whether a rotor shows rigid or flexible behaviour <\/td>\n<\/tr>\n
98<\/td>\nAnnex\u00a0F (informative) Method of computation of unbalance correction <\/td>\n<\/tr>\n
99<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Tracked Changes. Mechanical vibration. Rotor balancing – Procedures and tolerances for rotors with flexible behaviour<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n102<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":261671,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[321,2641],"product_tag":[],"class_list":{"0":"post-261667","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-21-120-40","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/261667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/261671"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=261667"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=261667"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=261667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}