{"id":690,"date":"2026-10-08T07:37:34","date_gmt":"2026-10-08T07:37:34","guid":{"rendered":"https:\/\/sun-gears.net\/robot-7th-axis-rack-pinion-selection\/"},"modified":"2026-10-09T05:44:06","modified_gmt":"2026-10-09T05:44:06","slug":"sun-gear-backlash-tooth-contact","status":"publish","type":"post","link":"https:\/\/sun-gears.net\/it\/sun-gear-backlash-tooth-contact\/","title":{"rendered":"Sun Gear Backlash and Tooth Contact"},"content":{"rendered":"
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KNOWLEDGE<\/div>\n

Sun Gear Backlash and Tooth Contact<\/h1>\n

Planetary backlash and tooth contact depend on the whole stage, not the sun gear alone.<\/p>\n

Technical Guide<\/span>Planetary Gear<\/span>Richiesta di preventivo<\/span><\/div>\n
Richiedi un preventivo<\/a>Sfoglia i prodotti<\/a><\/div>\n<\/div>\n
\"Sun<\/figure>\n<\/div>\n<\/section>\n
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Tooth thickness<\/h2>\n<\/div>\n

Sun and planet tooth thickness directly affect backlash, but so do ring gear geometry and center distance.<\/p>\n<\/div>\n<\/section>\n

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Support accuracy<\/h2>\n<\/div>\n

Bearing, carrier and housing runout can move the mesh and change tooth contact around the rotation.<\/p>\n<\/div>\n<\/section>\n

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Tooth modifications<\/h2>\n<\/div>\n

Profile or lead modifications may be used in designed systems; they should be reproduced only from controlled data.<\/p>\n<\/div>\n<\/section>\n

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Use the drawing as the controlled record<\/h2>\n<\/div>\n
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A technical guide can explain which variables matter, but the final sun gear must be approved from the actual drawing and operating requirement.<\/p>\n

If a value is missing, identify it for confirmation instead of copying a dimension or material from a different supplier or gear family.<\/p>\n<\/div>\n

\"Sun<\/figure>\n<\/div>\n<\/div>\n<\/section>\n
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Lista di controllo della richiesta di offerta (RFQ)<\/h2>\n<\/div>\n

Send the sun gear drawing or measured tooth data, mating planet\/ring information, interface dimensions, material\/process requirements, duty, quantity and destination.<\/p>\n<\/div>\n<\/section>\n

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Deeper buyer guidance<\/h2>\n<\/div>\n
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Backlash and tooth contact are system-level results influenced by all mating gears, carrier\/bearing alignment and the sun gear datum relationship.<\/p>\n

For new designs, use the complete planetary geometry and functional datums before deciding the process route. For replacement work, use photos and equipment references for context but let measured tooth and interface data control the new part.<\/p>\n<\/div>\n

\"Deeper<\/figure>\n<\/div>\n<\/div>\n<\/section>\n
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What to control on the RFQ or drawing<\/h2>\n<\/div>\n
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Articolo<\/th>\nWhat to define<\/th>\n<\/tr>\n<\/thead>\n
Planetary mesh<\/td>\nSun, planet and ring tooth data plus planet count when known.<\/td>\n<\/tr>\n
Center interface<\/td>\nBore, key, spline or shaft features with functional datums.<\/td>\n<\/tr>\n
Operating duty<\/td>\nRated\/peak torque, speed, reversals\/shock, life and environment.<\/td>\n<\/tr>\n
Material\/process<\/td>\nControlled material, heat treatment, finish and coating requirements.<\/td>\n<\/tr>\n
Acceptance<\/td>\nGear\/runout\/dimensional checks and required documentation.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n
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Domande frequenti<\/h2>\n<\/div>\n
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\nCan a visual match confirm interchangeability?<\/summary>\n

No. Similar outside dimensions can hide different pitch systems, pressure angles, profile shift or interface fits.<\/p>\n<\/details>\n

\nShould mating gear data be included?<\/summary>\n

Yes whenever available, because planetary geometry is easier to verify as a system.<\/p>\n<\/details>\n

\nWhat if a value is unknown?<\/summary>\n

Mark it as open and provide the available sample, mating component or application data rather than guessing.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n

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Richiesta di preventivo<\/div>\n

Richiedi un preventivo \/ Invia una richiesta di offerta<\/h2>\n

Send the drawing, tooth data, mating-component information, duty and quantity. We will review the interface before quotation.<\/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":"

Planetary backlash and tooth contact depend on the whole stage, not the sun gear alone.<\/p>","protected":false},"author":1,"featured_media":1094,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-690","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\/690","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=690"}],"version-history":[{"count":4,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/posts\/690\/revisions"}],"predecessor-version":[{"id":1115,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/posts\/690\/revisions\/1115"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/media\/1094"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/media?parent=690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/categories?post=690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sun-gears.net\/it\/wp-json\/wp\/v2\/tags?post=690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}