{"id":486662,"date":"2024-11-05T12:14:20","date_gmt":"2024-11-05T12:14:20","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/agma-iso-14179-1\/"},"modified":"2024-11-05T12:14:20","modified_gmt":"2024-11-05T12:14:20","slug":"agma-iso-14179-1","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/agma\/agma-iso-14179-1\/","title":{"rendered":"AGMA ISO 14179-1"},"content":{"rendered":"<p>\n<u><strong>SCOPE<\/strong><\/u><\/p>\n<p>\tThis information sheet utilizes an analytical heat balance model to provide a means of calculating the thermal transmittable power of a single- or multiple-stage gear drive lubricated with mineral oil.\u00a0 The calculation is based on standard conditions of 25\u00b0 C maximum ambient temperature and 95\u00b0 C maximum oil sump temperature in a large indoor space, but provides modifiers for other conditions.<\/p>\n<p>\n<u><strong>FOREWORD<\/strong><\/u><\/p>\n<p>\t[The foreword, footnotes and annexes, if any, in this document are provided for informational purposes only and are not to be construed as a part of AGMA ISO 14179-1, <em>Gear Reducers &#8211; Thermal Capacity based on ISO\/TR 14179-1<\/em>.]<\/p>\n<p>\tThis thermal rating method was the American proposal to ISO\/TR 14179.\u00a0 It utilizes an analytical heat balance model to calculate the thermal transmittable power for a single or multiple stage gear drive lubricated with mineral oil.\u00a0 Many of the factors in the analytical model can trace their roots to published works of various authors.\u00a0 The procedure is based on the calculation method presented in AGMA Technical Paper 96FTM9 by A.E. Phillips [1].\u00a0 The bearing losses are calculated from catalogue information supplied by bearing manufacturers, which in turn can be traced to the work of Palmgren.\u00a0 The gear windage and churning loss formulations originally appeared in work presented by Dudley, and have been modified to account for the effects of changes in lubricant viscosity and amount of gear submergence.\u00a0 The gear load losses are derived from the early investigators of rolling and sliding friction who approximated gear tooth action by means of disk testers.\u00a0 The coefficients in the load loss equation were then developed from a multiple parameter regression analysis of experimental data from a large population of tests in typical industrial gear drives.\u00a0 These gear drives were subjected to testing which varied operating conditions over a wide range.\u00a0 Operating condition parameters in the test matrix included speed, power, direction of rotation and amount of lubricant.\u00a0 The formulation has been verified by cross checking predicted results to experimental data for various gear drive configurations from several manufacturers.<\/p>\n<p>\tAGMA ISO 14179-1 is not identical to ISO\/TR 14179-1:2001, <em>Gears &#8211; Thermal capacity &#8211; Part 1:\u00a0 Rating gear drives with thermal equilibrium at 95\u00b0 C sump temperature<\/em>.\u00a0 Differences in this information sheet include:<\/p>\n<ul>\n<li>\n<p>\t\tIn table 2, the second equation for P1 for spherical roller bearings was changed to correctly indicate the condition (F<sub>r<\/sub>\/F<sub>a<\/sub>) = Y<sub>2<\/sub>;<\/li>\n<li>\n<p>\t\tText and a figure were added to clause 6 to assist in illustrating Method A testing;<\/li>\n<li>\n<p>\t\tText and a figure were added to 7.1 to assist in illustrating the thermal calculation procedure;<\/li>\n<li>\n<p>\t\tFigures A.1 and A.2 were revised to accurately reflect dimensions shown;<\/li>\n<li>\n<p>\t\tAn annex was added to provide example calculations.<\/li>\n<\/ul>\n<p>\tThe first draft of AGMA ISO 14179-1 was made in December, 2002.\u00a0 It was approved by the AGMA membership in March, 2004<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Gear Reducers &#8211; Thermal Capacity Based on ISO\/TR 14179-1<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/agma\/\"><b>AGMA<\/b><\/a><\/td>\n<td>2004<\/td>\n<td>33<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":486670,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2659],"product_tag":[],"class_list":{"0":"post-486662","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-agma","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/486662","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\/486670"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=486662"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=486662"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=486662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}