{"id":418885,"date":"2024-10-20T06:23:13","date_gmt":"2024-10-20T06:23:13","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-21940-212022-tc\/"},"modified":"2024-10-26T11:55:12","modified_gmt":"2024-10-26T11:55:12","slug":"bs-iso-21940-212022-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-21940-212022-tc\/","title":{"rendered":"BS ISO 21940-21:2022 – 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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\n30468289 <\/td>\n<\/tr>\n
125<\/td>\nA-30423423 <\/td>\n<\/tr>\n
126<\/td>\nundefined <\/td>\n<\/tr>\n
132<\/td>\nForeword <\/td>\n<\/tr>\n
133<\/td>\nIntroduction <\/td>\n<\/tr>\n
135<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Capacity and performance data of the balancing machine
4.1 General
4.2 Data for horizontal balancing machines
4.2.1 Rotor mass and unbalance limitations <\/td>\n<\/tr>\n
136<\/td>\n4.2.2 Production efficiency <\/td>\n<\/tr>\n
137<\/td>\n4.2.3 Rotor dimensions <\/td>\n<\/tr>\n
138<\/td>\n4.2.4 Balancing machine drive data
4.2.5 Torque <\/td>\n<\/tr>\n
139<\/td>\n4.2.6 Type of rotor drive
4.2.7 Brake
4.2.8 Motor and controls
4.2.9 Speed regulation
4.2.10 Couple moment interference ratio, Isc
4.2.11 Air pressure requirements
4.3 Data for vertical balancing machines
4.3.1 Rotor mass and unbalance limitations <\/td>\n<\/tr>\n
140<\/td>\n4.3.2 Production efficiency
4.3.3 Rotor dimensions <\/td>\n<\/tr>\n
142<\/td>\n4.3.4 Balancing machine drive data
4.3.5 Torque
4.3.6 Type of drive to rotor
4.3.7 Brake
4.3.8 Motor and controls
4.3.9 Speed regulation
4.3.10 Couple moment interference ratio
4.3.11 Air pressure requirements
5 Machine features
5.1 Principle of operation
5.2 Machine arrangement <\/td>\n<\/tr>\n
143<\/td>\n5.3 Measuring system
5.3.1 General
5.3.2 Unbalance indicators
5.3.3 Additional features <\/td>\n<\/tr>\n
144<\/td>\n5.3.4 Operation of the indicating system
5.4 Plane separation system
5.4.1 Multi-plane balancing machines
5.4.2 Single-plane horizontal or vertical balancing machines
5.5 Setting and calibration of the measuring system
5.5.1 General <\/td>\n<\/tr>\n
145<\/td>\n5.5.2 Soft-bearing machines
5.5.3 Hard-bearing machines
6 Production efficiency
6.1 General <\/td>\n<\/tr>\n
146<\/td>\n6.2 Time per balance cycle <\/td>\n<\/tr>\n
147<\/td>\n6.3 Unbalance reduction ratio, RUR <\/td>\n<\/tr>\n
148<\/td>\n7 Performance qualifying factors
8 Installation requirements
8.1 General
8.2 Supply requirements <\/td>\n<\/tr>\n
149<\/td>\n8.3 Foundation
9 Proving rotors and test masses
9.1 General
9.2 Standardized proving rotors <\/td>\n<\/tr>\n
151<\/td>\n9.3 User defined proving rotors
9.4 Test masses
9.4.1 General <\/td>\n<\/tr>\n
158<\/td>\n9.4.2 Umar test masses <\/td>\n<\/tr>\n
159<\/td>\n9.4.3 RUR test masses <\/td>\n<\/tr>\n
160<\/td>\n9.4.4 Permissible test mass errors <\/td>\n<\/tr>\n
161<\/td>\n9.4.5 Material
10 Balance machine verification tests
10.1 General <\/td>\n<\/tr>\n
162<\/td>\n10.2 Requirements for evaluating balance machine performance <\/td>\n<\/tr>\n
163<\/td>\n10.3 Test speed
10.4 Test for establishing the minimum achievable residual unbalance, Umar
10.4.1 General
10.4.2 Initial balancing machine setting <\/td>\n<\/tr>\n
165<\/td>\n10.4.3 Unbalance added <\/td>\n<\/tr>\n
166<\/td>\n10.4.4 Readings
10.4.5 Correction
10.4.6 Reference change
10.4.7 Plane setting for Umar test
10.4.8 Test runs
10.4.9 Umar evaluation <\/td>\n<\/tr>\n
167<\/td>\n10.5 Test for unbalance reduction ratio, RUR
10.5.1 RUR tests on single-plane balancing machines
10.5.2 RUR tests on two-plane balancing machines
10.5.3 General <\/td>\n<\/tr>\n
170<\/td>\n10.5.4 Test data sheet completion
10.5.5 Plane setting
10.5.6 RUR test runs <\/td>\n<\/tr>\n
171<\/td>\n10.5.7 Plotting RUR test data <\/td>\n<\/tr>\n
175<\/td>\n10.5.8 Evaluation <\/td>\n<\/tr>\n
176<\/td>\n10.6 Test for couple moment interference on single-plane machines
10.6.1 Starting point
10.6.2 Procedure
10.6.3 Evaluation
10.7 Compensator test
10.7.1 Initial point
10.7.2 Procedure <\/td>\n<\/tr>\n
177<\/td>\n10.7.3 Evaluation
10.8 Simplified tests
10.8.1 General
10.8.2 Simplified Umar test <\/td>\n<\/tr>\n
178<\/td>\n10.8.3 Simplified RUR test <\/td>\n<\/tr>\n
179<\/td>\nAnnex A (informative) Information provided by the user to the balancing machine manufacturer <\/td>\n<\/tr>\n
185<\/td>\nAnnex B (informative) RUR limit diagrams <\/td>\n<\/tr>\n
188<\/td>\nAnnex C (informative) Shafts of outboard Type C proving rotors <\/td>\n<\/tr>\n
190<\/td>\nAnnex D (informative) User defined proving rotors for special cases including using a user production part <\/td>\n<\/tr>\n
191<\/td>\nAnnex E (informative) Modifications to proving rotors prepared in accordance with ISO 2953 to this document <\/td>\n<\/tr>\n
193<\/td>\nAnnex F (informative) Optional repeatability test <\/td>\n<\/tr>\n
195<\/td>\nAnnex G (informative) Optional speed range test <\/td>\n<\/tr>\n
196<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Tracked Changes. Mechanical vibration. Rotor balancing – Description and evaluation of balancing machines<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n198<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":418893,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[321,2641],"product_tag":[],"class_list":{"0":"post-418885","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\/418885","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\/418893"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=418885"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=418885"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=418885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}