{"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\/ko\/planet-count-sun-gear-geometry\/","title":{"rendered":"How Planet Count Affects Sun Gear and Planetary Geometry"},"content":{"rendered":"
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KNOWLEDGE<\/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

Technical Guide<\/span>Sun Gear<\/span>Planetary Gear<\/span><\/div>\n
\uacac\uc801 \uc694\uccad<\/a>Knowledge Center<\/a><\/div>\n<\/div>\n
\"How<\/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 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

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Practical design and replacement implications<\/h2>\n<\/div>\n
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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
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What to control on the RFQ or drawing<\/h2>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n
\ubaa9<\/th>\nWhat to define<\/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
Center interface<\/td>\nBore, keyway, spline, hollow center or integrated shaft plus functional datums.<\/td>\n<\/tr>\n
\uc758\ubb34<\/td>\nRated\/peak torque, speed, reversals\/shock, life, lubrication and environment.<\/td>\n<\/tr>\n
\ud504\ub85c\uc138\uc2a4<\/td>\nControlled material, heat treatment, finishing and coating requirements.<\/td>\n<\/tr>\n
Acceptance<\/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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Frequently asked 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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\uacac\uc801 \uc694\uccad<\/div>\n

\uacac\uc801 \uc694\uccad \/ RFQ \uc81c\ucd9c<\/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

\uacac\uc801 \uc694\uccad\uc11c(RFQ)\ub97c \ubcf4\ub0b4\uc8fc\uc138\uc694<\/a><\/div>\n

\ucd5c\uc18c \uc8fc\ubb38 \uc218\ub7c9<\/strong>\uc81c\ud488 \uc885\ub958 \ubc0f \ucd1d \uc8fc\ubb38 \uae08\uc561\uc5d0 \ub530\ub77c \uc720\uc5f0\ud558\uac8c \uc801\uc6a9\ub429\ub2c8\ub2e4.<\/span><\/div>
\uc0d8\ud50c<\/strong>\uc2e0\uaddc \uace0\uac1d\uc740 \ubd80\ud488 \ubc0f \uacf5\uc815\uc774 \uc801\ud569\ud55c \uacbd\uc6b0 1~5\uac1c\uae4c\uc9c0 \uc8fc\ubb38\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/div>
\ud63c\ud569 \uc8fc\ubb38<\/strong>\ucd1d \uc8fc\ubb38 \uae08\uc561\uc774 \ubbf8\ud654 1,500\ub2ec\ub7ec \uc774\uc0c1\uc77c \uacbd\uc6b0, \uc11c\ub85c \ub2e4\ub978 \ud0dc\uc591 \uad6c\ub3d9 \uc7a5\uce58 \ub610\ub294 \uad00\ub828 \uc720\uc131 \uae30\uc5b4 \ubd80\ud488 \ubaa8\ub378\uc744 \uc870\ud569\ud558\uc5ec \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/div>
\uc18c\ub7c9 \uc8fc\ubb38<\/strong>1~2\uac1c \uc8fc\ubb38\ub3c4 \ud611\uc758 \uac00\ub2a5\ud558\uba70, \uc77c\ubc18\uc801\uc73c\ub85c \ub2e8\uac00\uac00 \ub354 \ub192\uc2b5\ub2c8\ub2e4.<\/span><\/div>
\ubc30\ub2ec<\/strong>\ud45c\uc900 \ubd80\ud488: 10~25 \uc601\uc5c5\uc77c. \ub9de\ucda4\ud615 \ubd80\ud488: 20~45 \uc601\uc5c5\uc77c. \ud504\ub85c\uc81d\ud2b8 \uc7a5\ube44: 45~120 \uc601\uc5c5\uc77c.<\/span><\/div>
\uac70\ub798 \uc870\uac74<\/strong>EXW, FOB, CIF \ubc0f DAP\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc9c0\uc6d0\ub418\ub294 \uc870\uac74\uc785\ub2c8\ub2e4. FCA, CFR, CPT, CIP \ubc0f DDP\ub294 \uc0ac\ub840\ubcc4\ub85c \ud611\uc758 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/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\/ko\/wp-json\/wp\/v2\/posts\/1079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/comments?post=1079"}],"version-history":[{"count":1,"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/posts\/1079\/revisions"}],"predecessor-version":[{"id":1125,"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/posts\/1079\/revisions\/1125"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/media\/1097"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/media?parent=1079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/categories?post=1079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sun-gears.net\/ko\/wp-json\/wp\/v2\/tags?post=1079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}