{"id":1082,"date":"2026-10-09T02:48:50","date_gmt":"2026-10-09T02:48:50","guid":{"rendered":"https:\/\/sun-gears.net\/lubrication-sun-gears-planetary\/"},"modified":"2026-10-09T06:53:31","modified_gmt":"2026-10-09T06:53:31","slug":"lubrication-sun-gears-planetary","status":"publish","type":"post","link":"https:\/\/sun-gears.net\/it\/lubrication-sun-gears-planetary\/","title":{"rendered":"Lubrication Factors for Sun Gears in Planetary Gearboxes"},"content":{"rendered":"
\n
\n
\n
KNOWLEDGE<\/div>\n

Lubrication Factors for Sun Gears in Planetary Gearboxes<\/h1>\n

Lubrication protects tooth surfaces, removes heat and carries contamination away; sun-gear speed and stage orientation affect how that oil reaches the mesh.<\/p>\n

Technical Guide<\/span>Sun Gear<\/span>Planetary Gear<\/span><\/div>\n
Richiedi un preventivo<\/a>Knowledge Center<\/a><\/div>\n<\/div>\n
\"Lubrication<\/figure>\n<\/div>\n<\/section>\n
\n
\n
\n

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

When the issue is lubrication and oil condition, inspect the entire planetary stage before ordering a single replacement. The sun, planets, ring, bearings, carrier and lubrication system share the same load path.<\/p>\n

Damage pattern, oil condition and circumferential repetition can help distinguish overload, alignment, lubrication and surface-fatigue problems.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n
\n

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

A new gear should preserve the approved tooth and interface geometry unless a controlled redesign is intended. Increasing hardness or changing backlash without diagnosing the root cause can create a different failure.<\/p>\n

Record damaged and unworn regions separately when reverse measuring the part.<\/p>\n<\/div>\n

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

What to control on the RFQ or drawing<\/h2>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n
Articolo<\/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
Dovere<\/td>\nRated\/peak torque, speed, reversals\/shock, life, lubrication and environment.<\/td>\n<\/tr>\n
Processo<\/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
\n
\n
\n

Domande frequenti<\/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
Richiesta di preventivo<\/div>\n

Richiedi un preventivo \/ Invia una richiesta di offerta<\/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

Invia richiesta di preventivo<\/a><\/div>\n

MOQ<\/strong>Flessibilit\u00e0 in base alla tipologia di prodotto e al valore totale dell'ordine.<\/span><\/div>
Campioni<\/strong>I nuovi clienti possono richiedere da 1 a 5 pezzi, a condizione che il componente e il processo siano idonei.<\/span><\/div>
Ordini misti<\/strong>\u00c8 possibile combinare diversi modelli di ingranaggi solari o componenti planetari correlati quando il valore totale dell'ordine \u00e8 pari o superiore a circa 1.500 USD.<\/span><\/div>
Piccoli ordini<\/strong>Ordini da 1 a 2 pezzi sono negoziabili, con un costo unitario generalmente superiore.<\/span><\/div>
Consegna<\/strong>Componenti standard: 10-25 giorni lavorativi. Componenti personalizzati: 20-45 giorni lavorativi. Attrezzature per progetti: 45-120 giorni lavorativi.<\/span><\/div>
termini commerciali<\/strong>I termini EXW, FOB, CIF e DAP sono generalmente supportati. FCA, CFR, CPT, CIP e DDP possono essere discussi caso per caso.<\/span><\/div><\/div><\/div>\n<\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"

Lubrication protects tooth surfaces, removes heat and carries contamination away; sun-gear speed and stage orientation affect how that oil reaches the mesh.<\/p>","protected":false},"author":1,"featured_media":1093,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1082","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sun-gears"],"_links":{"self":[{"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/posts\/1082","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/comments?post=1082"}],"version-history":[{"count":1,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/posts\/1082\/revisions"}],"predecessor-version":[{"id":1128,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/posts\/1082\/revisions\/1128"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/media\/1093"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/media?parent=1082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/categories?post=1082"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/tags?post=1082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}