{"id":1073,"date":"2026-10-09T02:48:06","date_gmt":"2026-10-09T02:48:06","guid":{"rendered":"https:\/\/sun-gears.net\/sun-gear-bore-keyway-spline\/"},"modified":"2026-10-09T05:44:50","modified_gmt":"2026-10-09T05:44:50","slug":"sun-gear-bore-keyway-spline","status":"publish","type":"post","link":"https:\/\/sun-gears.net\/fr\/sun-gear-bore-keyway-spline\/","title":{"rendered":"Sun Gear Bore, Keyway or Spline: Interface Choices"},"content":{"rendered":"
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CONNAISSANCE<\/div>\n

Sun Gear Bore, Keyway or Spline: Interface Choices<\/h1>\n

The center interface determines how torque enters the sun gear and how accurately the part stays on the planetary centerline.<\/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
\"Sun<\/figure>\n<\/div>\n<\/section>\n
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Why this topic changes the sun gear decision<\/h2>\n<\/div>\n
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The key engineering question is bore, keyway and spline options. The center interface carries torque and also establishes how the sun gear is located relative to bearings, the carrier and the mating planets.<\/p>\n

A dimensionally correct interface can still produce poor tooth contact if it is eccentric to the external gear teeth. Fits and datums therefore belong in the same review as the gear geometry.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Practical design and replacement implications<\/h2>\n<\/div>\n
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For replacement work, measure the mating shaft or hub when possible. Service wear can change spline tooth thickness, keyway condition or bore size and should not be copied into the new drawing.<\/p>\n

For new designs, define engagement length, lead-in features, retention and service access along with the torque requirement.<\/p>\n<\/div>\n

\"Practical<\/figure>\n<\/div>\n<\/div>\n<\/section>\n
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Que faut-il contr\u00f4ler dans la demande de devis ou le dessin\u00a0?<\/h2>\n<\/div>\n
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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
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Foire aux questions<\/h2>\n<\/div>\n
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\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

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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":"

The center interface determines how torque enters the sun gear and how accurately the part stays on the planetary centerline.<\/p>","protected":false},"author":1,"featured_media":1100,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1073","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\/1073","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=1073"}],"version-history":[{"count":1,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts\/1073\/revisions"}],"predecessor-version":[{"id":1119,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/posts\/1073\/revisions\/1119"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/media\/1100"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/media?parent=1073"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/categories?post=1073"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sun-gears.net\/fr\/wp-json\/wp\/v2\/tags?post=1073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}