{"id":1090,"date":"2026-10-09T02:49:46","date_gmt":"2026-10-09T02:49:46","guid":{"rendered":"https:\/\/sun-gears.net\/matched-sun-planet-ring-gear-set\/"},"modified":"2026-10-09T06:54:04","modified_gmt":"2026-10-09T06:54:04","slug":"matched-sun-planet-ring-gear-set","status":"publish","type":"post","link":"https:\/\/sun-gears.net\/fr\/matched-sun-planet-ring-gear-set\/","title":{"rendered":"How to Specify a Matched Sun, Planet and Ring Gear Set"},"content":{"rendered":"<section class=\"sg-hero\">\n<div class=\"sg-container sg-hero-grid\">\n<div>\n<div class=\"sg-eyebrow\">CONNAISSANCE<\/div>\n<h1>How to Specify a Matched Sun, Planet and Ring Gear Set<\/h1>\n<p class=\"sg-lead\">A matched planetary set is defined by the shared tooth system, center-distance geometry, planet count and component interfaces\u2014not by purchasing three unrelated gears together.<\/p>\n<div class=\"sg-pills\"><span>Guide technique<\/span><span>Sun Gear<\/span><span>Engrenage plan\u00e9taire<\/span><\/div>\n<div class=\"sg-actions\"><a class=\"sg-btn\" href=\"#rfq-form\">Demander un devis<\/a><a class=\"sg-btn sg-btn--ghost\" href=\"https:\/\/sun-gears.net\/fr\/knowledge\/\">Knowledge Center<\/a><\/div>\n<\/div>\n<figure><img decoding=\"async\" src=\"https:\/\/sun-gears.net\/wp-content\/uploads\/2026\/10\/planetary-gear-set.webp\" alt=\"How to Specify a Matched Sun, Planet and Ring Gear Set\" fetchpriority=\"high\"><\/figure>\n<\/div>\n<\/section>\n<section class=\"sg-section\">\n<div class=\"sg-container\">\n<div class=\"sg-section-head\">\n<h2>Why this topic changes the sun gear decision<\/h2>\n<\/div>\n<div class=\"sg-prose\">\n<p>The first step is to define matched sun, planet and ring gear sets in the context of the complete planetary stage. Sun, planet and ring gear tooth data share one center-distance relationship, and the number of planets can add assembly constraints.<\/p>\n<p>Changing one sun-gear variable can alter ratio, contact, packaging or the mating gear requirements. Preserve the controlled calculation for replacement work and use a system-level review for new designs.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sg-section sg-section--soft\">\n<div class=\"sg-container\">\n<div class=\"sg-section-head\">\n<h2>Practical design and replacement implications<\/h2>\n<\/div>\n<div class=\"sg-split sg-split--flip\">\n<div class=\"sg-prose\">\n<p>Start with tooth count, module or DP, pressure angle, helix information and any specified profile shift. Then add planet and ring tooth counts and the number of planets.<\/p>\n<p>The center connection\u2014bore, key, spline, hollow center or integrated shaft\u2014should be defined after the mesh is understood, not treated as a separate cosmetic feature.<\/p>\n<\/div>\n<figure class=\"sg-figure\"><img decoding=\"async\" src=\"https:\/\/sun-gears.net\/wp-content\/uploads\/2026\/10\/planetary-gear-set.webp\" alt=\"Practical design and replacement implications\" loading=\"lazy\"><\/figure>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sg-section\">\n<div class=\"sg-container\">\n<div class=\"sg-section-head\">\n<h2>Que faut-il contr\u00f4ler dans la demande de devis ou le dessin\u00a0?<\/h2>\n<\/div>\n<div class=\"sg-table-wrap table-scroll\">\n<table class=\"sg-table\">\n<thead>\n<tr>\n<th>Article<\/th>\n<th>Que d\u00e9finir<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tooth system<\/td>\n<td>Tooth count, module\/DP, pressure angle, helix and profile shift\/modification when applicable.<\/td>\n<\/tr>\n<tr>\n<td>Planetary context<\/td>\n<td>Mating planet\/ring data and planet count when available.<\/td>\n<\/tr>\n<tr>\n<td>Interface centrale<\/td>\n<td>Bore, keyway, spline, hollow center or integrated shaft plus functional datums.<\/td>\n<\/tr>\n<tr>\n<td>Devoir<\/td>\n<td>Rated\/peak torque, speed, reversals\/shock, life, lubrication and environment.<\/td>\n<\/tr>\n<tr>\n<td>Processus<\/td>\n<td>Controlled material, heat treatment, finishing and coating requirements.<\/td>\n<\/tr>\n<tr>\n<td>Acceptation<\/td>\n<td>Tooth\/runout\/dimensional inspection and required documentation.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sg-section sg-section--soft\">\n<div class=\"sg-container\">\n<div class=\"sg-section-head\">\n<h2>Foire aux questions<\/h2>\n<\/div>\n<div class=\"sg-accordion\">\n<details>\n<summary>Can one loose sun gear answer every design question?<\/summary>\n<p>Usually not. Mating gear data and the center interface provide important cross-checks.<\/p>\n<\/details>\n<details>\n<summary>Should material or tolerance be copied from a similar part?<\/summary>\n<p>Only when the controlled design allows it. Similar appearance is not proof of the same duty or specification.<\/p>\n<\/details>\n<details>\n<summary>What is the fastest way to get a useful quote?<\/summary>\n<p>Send the latest drawing or measured tooth\/interface data, mating component information, duty, acceptance needs and quantity.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"sg-section sg-cta\">\n<div class=\"sg-container sg-cta-grid\">\n<div>\n<div class=\"sg-eyebrow\">Demande de devis<\/div>\n<h2>Demande de devis \/ Envoyer une demande de prix<\/h2>\n<p>Send the drawing, mating gear information, center interface, duty, inspection needs and quantity. The article is selection guidance; the approved drawing controls production.<\/p>\n<p><a class=\"sg-btn\" href=\"#rfq-form\">Envoyer une demande de devis<\/a><\/div>\n<div><div class=\"sg-order-terms\"><div class=\"sg-order-term\"><strong>MOQ<\/strong><span>Flexible selon le type de produit et la valeur totale de la commande.<\/span><\/div><div class=\"sg-order-term\"><strong>\u00c9chantillons<\/strong><span>Les nouveaux clients peuvent commander de 1 \u00e0 5 pi\u00e8ces lorsque la pi\u00e8ce et le processus le permettent.<\/span><\/div><div class=\"sg-order-term\"><strong>Commandes mixtes<\/strong><span>Diff\u00e9rents mod\u00e8les d'\u00e9quipements solaires ou de composants plan\u00e9taires apparent\u00e9s peuvent \u00eatre combin\u00e9s lorsque la valeur totale de la commande est d'environ 1\u00a0500 USD ou plus.<\/span><\/div><div class=\"sg-order-term\"><strong>petites commandes<\/strong><span>Les commandes de 1 \u00e0 2 pi\u00e8ces peuvent \u00eatre discut\u00e9es, g\u00e9n\u00e9ralement avec un co\u00fbt unitaire plus \u00e9lev\u00e9.<\/span><\/div><div class=\"sg-order-term\"><strong>Livraison<\/strong><span>Pi\u00e8ces standard\u00a0: 10 \u00e0 25 jours ouvrables. Composants sur mesure\u00a0: 20 \u00e0 45 jours ouvrables. \u00c9quipements de projet\u00a0: 45 \u00e0 120 jours ouvrables.<\/span><\/div><div class=\"sg-order-term\"><strong>Conditions commerciales<\/strong><span>Les incoterms EXW, FOB, CIF et DAP sont g\u00e9n\u00e9ralement accept\u00e9s. Les incoterms FCA, CFR, CPT, CIP et DDP peuvent \u00eatre discut\u00e9s au cas par cas.<\/span><\/div><\/div><\/div>\n<\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>A matched planetary set is defined by the shared tooth system, center-distance geometry, planet count and component interfaces\u2014not by purchasing three unrelated gears together.<\/p>","protected":false},"author":1,"featured_media":1008,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1090","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sun-gears"],"_links":{"self":[{"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts\/1090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/comments?post=1090"}],"version-history":[{"count":1,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts\/1090\/revisions"}],"predecessor-version":[{"id":1136,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts\/1090\/revisions\/1136"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/media\/1008"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/media?parent=1090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/categories?post=1090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/tags?post=1090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}