This standard provides specific guidance for assessing the severity of radial vibration measured on the shafts of coupled industrial machines with fluid-film bearings in situ. It applies to coupled industrial machines with fluid-film bearings, having maximum continuous rated speeds in the range 1000 r\/min to 30000 r\/min and not being limited by size and power (with certain restrictions), comprising – steam turbines and generators with outputs less than or equal to 40 MW; – steam turbines and generators with outputs greater than 40 MW and speeds other than 1500 r\/min, 1800 r\/min, 3000 r\/min or 3600 r\/min (although generators seldom fall into this category); – rotary compressors; – industrial gas turbines with outputs less than or equal to 3 MW; – turbofans; – electric drives and associated gears, where relevant; – rotodynamic pumps (turbo pumps). Two criteria are provided for assessing the machine vibration when operating under steady state conditions. One criterion considers the magnitude of the observed vibration; the second considers changes in the magnitude. In addition, different criteria are provided for transient operating conditions, such as run-up and coast-down. The evaluation procedures presented in this part of ISO 7919 are based on broad-band measurements. The following are excluded from this part of ISO 7919: – steam turbines and\/or generators with outputs greater than 40 MW and speeds of 1500 r\/min, 1800 r\/min, 3000 r\/min or 3600 r\/min (see ISO 20816-2); – gas turbine sets with outputs greater than 3 MW (see ISO 7919-4 and ISO 20816-2); – machine sets in hydraulic power generating and pump-storage plants (see ISO 20816-5); – rotodynamic pumps including integrated electric motors, i.e. where the impeller is mounted directly on the motor shaft or is rigidly attached to it (see ISO 10816-7); – submerged motor-pumps; – reciprocating pumps; – rotary positive displacement compressors (e. g. screw compressors); – reciprocating compressors; – wind turbines.<\/p>\n","protected":false},"excerpt":{"rendered":"
Mechanical vibration – Evaluation of machine vibration by measurements on rotating shafts – Part 3: Coupled industrial machines<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n DIN<\/b><\/a><\/td>\n 2018-01<\/td>\n 14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":551239,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[272,2635],"product_tag":[],"class_list":{"0":"post-551225","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-160","7":"product_cat-din","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\/551225","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\/551239"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=551225"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=551225"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=551225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}