{"id":687,"date":"2026-10-08T07:37:27","date_gmt":"2026-10-08T07:37:27","guid":{"rendered":"https:\/\/sun-gears.net\/gear-rack-installation-alignment-joining\/"},"modified":"2026-10-09T05:43:50","modified_gmt":"2026-10-09T05:43:50","slug":"splined-sun-gear-interface","status":"publish","type":"post","link":"https:\/\/sun-gears.net\/vi\/splined-sun-gear-interface\/","title":{"rendered":"Splined Sun Gear Interfaces: What to Measure"},"content":{"rendered":"
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KNOWLEDGE<\/div>\n

Splined Sun Gear Interfaces: What to Measure<\/h1>\n

The spline can be as important as the gear teeth. A correct sun gear must both mesh with the planets and fit the drive shaft or hub.<\/p>\n

Technical Guide<\/span>Planetary Gear<\/span>Y\u00eau c\u1ea7u b\u00e1o gi\u00e1 (RFQ)<\/span><\/div>\n
Y\u00eau c\u1ea7u b\u00e1o gi\u00e1<\/a>Xem s\u1ea3n ph\u1ea9m<\/a><\/div>\n<\/div>\n
\"Splined<\/figure>\n<\/div>\n<\/section>\n
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Spline identity<\/h2>\n<\/div>\n

State the governing spline standard or provide a complete tooth definition, not only the major diameter.<\/p>\n<\/div>\n<\/section>\n

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Fit and datum<\/h2>\n<\/div>\n

Spline fit, effective length, runout to the gear teeth and axial shoulder locations influence assembly.<\/p>\n<\/div>\n<\/section>\n

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\u0110i\u1ec1u tra<\/h2>\n<\/div>\n

Define whether spline gauges, over-pin measurements or runout reports are required.<\/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

\"Splined<\/figure>\n<\/div>\n<\/div>\n<\/section>\n
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RFQ checklist<\/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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A spline adds a second tooth system to the part, so fit, effective length and concentricity must be controlled independently from the external gear mesh.<\/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
\n\n\n\n\n\n\n\n\n\n
M\u1ee5c<\/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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Frequently asked questions<\/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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Y\u00eau c\u1ea7u b\u00e1o gi\u00e1 (RFQ)<\/div>\n

Y\u00eau c\u1ea7u b\u00e1o gi\u00e1 \/ G\u1eedi y\u00eau c\u1ea7u b\u00e1o gi\u00e1<\/h2>\n

Vui l\u00f2ng g\u1eedi b\u1ea3n v\u1ebd, d\u1eef li\u1ec7u r\u0103ng, th\u00f4ng tin chi ti\u1ebft v\u1ec1 c\u00e1c b\u1ed9 ph\u1eadn gh\u00e9p n\u1ed1i, thu\u1ebf su\u1ea5t v\u00e0 s\u1ed1 l\u01b0\u1ee3ng. Ch\u00fang t\u00f4i s\u1ebd xem x\u00e9t giao di\u1ec7n tr\u01b0\u1edbc khi b\u00e1o gi\u00e1.<\/p>\n

G\u1eedi y\u00eau c\u1ea7u b\u00e1o gi\u00e1<\/a><\/div>\n

S\u1ed1 l\u01b0\u1ee3ng \u0111\u1eb7t h\u00e0ng t\u1ed1i thi\u1ec3u<\/strong>Gi\u00e1 c\u1ea3 linh ho\u1ea1t t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i s\u1ea3n ph\u1ea9m v\u00e0 t\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u01a1n h\u00e0ng.<\/span><\/div>
M\u1eabu<\/strong>Kh\u00e1ch h\u00e0ng m\u1edbi c\u00f3 th\u1ec3 \u0111\u1eb7t mua t\u1eeb 1 \u0111\u1ebfn 5 s\u1ea3n ph\u1ea9m n\u1ebfu linh ki\u1ec7n v\u00e0 quy tr\u00ecnh ph\u00f9 h\u1ee3p.<\/span><\/div>
\u0110\u01a1n h\u00e0ng h\u1ed7n h\u1ee3p<\/strong>C\u00f3 th\u1ec3 k\u1ebft h\u1ee3p c\u00e1c m\u1eabu b\u00e1nh r\u0103ng m\u1eb7t tr\u1eddi ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn h\u00e0nh tinh li\u00ean quan kh\u00e1c nhau khi t\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u01a1n h\u00e0ng \u0111\u1ea1t kho\u1ea3ng 1.500 USD tr\u1edf l\u00ean.<\/span><\/div>
\u0110\u01a1n h\u00e0ng nh\u1ecf<\/strong>C\u00f3 th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng v\u1ec1 \u0111\u01a1n h\u00e0ng t\u1eeb 1-2 s\u1ea3n ph\u1ea9m, th\u00f4ng th\u01b0\u1eddng v\u1edbi m\u1ee9c gi\u00e1 \u0111\u01a1n v\u1ecb cao h\u01a1n.<\/span><\/div>
V\u1eadn chuy\u1ec3n<\/strong>C\u00e1c b\u1ed9 ph\u1eadn ti\u00eau chu\u1ea9n: 10-25 ng\u00e0y l\u00e0m vi\u1ec7c. C\u00e1c b\u1ed9 ph\u1eadn \u0111\u1eb7t l\u00e0m ri\u00eang: 20-45 ng\u00e0y l\u00e0m vi\u1ec7c. Thi\u1ebft b\u1ecb d\u1ef1 \u00e1n: 45-120 ng\u00e0y l\u00e0m vi\u1ec7c.<\/span><\/div>
\u0110i\u1ec1u kho\u1ea3n th\u01b0\u01a1ng m\u1ea1i<\/strong>C\u00e1c \u0111i\u1ec1u kho\u1ea3n EXW, FOB, CIF v\u00e0 DAP th\u01b0\u1eddng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. C\u00e1c \u0111i\u1ec1u kho\u1ea3n FCA, CFR, CPT, CIP v\u00e0 DDP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn t\u00f9y t\u1eebng tr\u01b0\u1eddng h\u1ee3p.<\/span><\/div><\/div><\/div>\n<\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"

The spline can be as important as the gear teeth. A correct sun gear must both mesh with the planets and fit the drive shaft or hub.<\/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-687","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sun-gears"],"_links":{"self":[{"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/posts\/687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/comments?post=687"}],"version-history":[{"count":4,"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/posts\/687\/revisions"}],"predecessor-version":[{"id":1113,"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/posts\/687\/revisions\/1113"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/media\/1100"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/media?parent=687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/categories?post=687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sun-gears.net\/vi\/wp-json\/wp\/v2\/tags?post=687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}