{"id":1079,"date":"2026-10-09T02:48:38","date_gmt":"2026-10-09T02:48:38","guid":{"rendered":"https:\/\/sun-gears.net\/planet-count-sun-gear-geometry\/"},"modified":"2026-10-09T06:53:23","modified_gmt":"2026-10-09T06:53:23","slug":"planet-count-sun-gear-geometry","status":"publish","type":"post","link":"https:\/\/sun-gears.net\/fr\/planet-count-sun-gear-geometry\/","title":{"rendered":"How Planet Count Affects Sun Gear and Planetary Geometry"},"content":{"rendered":"
\n
\n
\n
CONNAISSANCE<\/div>\n

How Planet Count Affects Sun Gear and Planetary Geometry<\/h1>\n

Planet count changes load sharing, carrier layout and assembly conditions, so it belongs in a serious planetary gear review.<\/p>\n

Guide technique<\/span>Sun Gear<\/span>Engrenage plan\u00e9taire<\/span><\/div>\n
Demander un devis<\/a>Knowledge Center<\/a><\/div>\n<\/div>\n
\"How<\/figure>\n<\/div>\n<\/section>\n
\n
\n
\n

Why this topic changes the sun gear decision<\/h2>\n<\/div>\n
\n

The first step is to define planet count and assembly conditions 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

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

\n
\n
\n

Practical design and replacement implications<\/h2>\n<\/div>\n
\n
\n

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

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

\"Practical<\/figure>\n<\/div>\n<\/div>\n<\/section>\n
\n
\n
\n

Que faut-il contr\u00f4ler dans la demande de devis ou le dessin\u00a0?<\/h2>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n
Article<\/th>\nQue d\u00e9finir<\/th>\n<\/tr>\n<\/thead>\n
Tooth system<\/td>\nTooth count, module\/DP, pressure angle, helix and profile shift\/modification when applicable.<\/td>\n<\/tr>\n
Planetary context<\/td>\nMating planet\/ring data and planet count when available.<\/td>\n<\/tr>\n
Interface centrale<\/td>\nBore, keyway, spline, hollow center or integrated shaft plus functional datums.<\/td>\n<\/tr>\n
Devoir<\/td>\nRated\/peak torque, speed, reversals\/shock, life, lubrication and environment.<\/td>\n<\/tr>\n
Processus<\/td>\nControlled material, heat treatment, finishing and coating requirements.<\/td>\n<\/tr>\n
Acceptation<\/td>\nTooth\/runout\/dimensional inspection and required documentation.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n
\n
\n
\n

Foire aux questions<\/h2>\n<\/div>\n
\n
\nCan one loose sun gear answer every design question?<\/summary>\n

Usually not. Mating gear data and the center interface provide important cross-checks.<\/p>\n<\/details>\n

\nShould material or tolerance be copied from a similar part?<\/summary>\n

Only when the controlled design allows it. Similar appearance is not proof of the same duty or specification.<\/p>\n<\/details>\n

\nWhat is the fastest way to get a useful quote?<\/summary>\n

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

\n
\n
\n
Demande de devis<\/div>\n

Demande de devis \/ Envoyer une demande de prix<\/h2>\n

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

Envoyer une demande de devis<\/a><\/div>\n

MOQ<\/strong>Flexible selon le type de produit et la valeur totale de la commande.<\/span><\/div>
\u00c9chantillons<\/strong>Les nouveaux clients peuvent commander de 1 \u00e0 5 pi\u00e8ces lorsque la pi\u00e8ce et le processus le permettent.<\/span><\/div>
Commandes mixtes<\/strong>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>
petites commandes<\/strong>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>
Livraison<\/strong>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>
Conditions commerciales<\/strong>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":"

Planet count changes load sharing, carrier layout and assembly conditions, so it belongs in a serious planetary gear review.<\/p>","protected":false},"author":1,"featured_media":1097,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1079","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\/1079","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=1079"}],"version-history":[{"count":1,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts\/1079\/revisions"}],"predecessor-version":[{"id":1125,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts\/1079\/revisions\/1125"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/media\/1097"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/media?parent=1079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/categories?post=1079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/tags?post=1079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}