{"id":668,"date":"2026-10-08T07:36:46","date_gmt":"2026-10-08T07:36:46","guid":{"rendered":"https:\/\/sun-gears.net\/cnc-machine-tools\/"},"modified":"2026-10-09T05:41:57","modified_gmt":"2026-10-09T05:41:57","slug":"planetary-gearboxes","status":"publish","type":"page","link":"https:\/\/sun-gears.net\/th\/planetary-gearboxes\/","title":{"rendered":"Sun Gears for Planetary Gearboxes"},"content":{"rendered":"
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INDUSTRIAL PLANETARY DRIVES<\/div>\n

Sun Gears for Planetary Gearboxes<\/h1>\n

Planetary gearboxes place the sun gear at the center of the mesh. A reliable RFQ must treat the sun gear, planet gears, ring gear and carrier geometry as one system.<\/p>\n

\u0e2b\u0e19\u0e49\u0e32\u0e17\u0e35\u0e48<\/span>\u0e2d\u0e34\u0e19\u0e40\u0e17\u0e2d\u0e23\u0e4c\u0e40\u0e1f\u0e0b<\/span>\u0e01\u0e32\u0e23\u0e15\u0e23\u0e27\u0e08\u0e2a\u0e2d\u0e1a<\/span><\/div>\n
\u0e02\u0e2d\u0e43\u0e1a\u0e40\u0e2a\u0e19\u0e2d\u0e23\u0e32\u0e04\u0e32<\/a>\u0e40\u0e23\u0e35\u0e22\u0e01\u0e14\u0e39\u0e2a\u0e34\u0e19\u0e04\u0e49\u0e32<\/a><\/div>\n<\/div>\n
\"Sun<\/figure>\n<\/div>\n<\/section>\n
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\u0e23\u0e32\u0e22\u0e01\u0e32\u0e23\u0e15\u0e23\u0e27\u0e08\u0e2a\u0e2d\u0e1a RFQ \u0e40\u0e09\u0e1e\u0e32\u0e30\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19<\/h2>\n<\/div>\n
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\u0e1e\u0e32\u0e23\u0e32\u0e21\u0e34\u0e40\u0e15\u0e2d\u0e23\u0e4c<\/th>\n\u0e2a\u0e34\u0e48\u0e07\u0e17\u0e35\u0e48\u0e15\u0e49\u0e2d\u0e07\u0e23\u0e30\u0e1a\u0e38<\/th>\n<\/tr>\n<\/thead>\n
\u0e02\u0e49\u0e2d\u0e21\u0e39\u0e25\u0e2b\u0e19\u0e49\u0e32\u0e17\u0e35\u0e48<\/td>\nRated and peak torque, input\/output speed, starts, reversals and target life.<\/td>\n<\/tr>\n
\u0e40\u0e23\u0e02\u0e32\u0e04\u0e13\u0e34\u0e15<\/td>\nSun\/planet\/ring tooth counts, module or DP, pressure angle and any profile shift.<\/td>\n<\/tr>\n
\u0e2d\u0e34\u0e19\u0e40\u0e17\u0e2d\u0e23\u0e4c\u0e40\u0e1f\u0e0b<\/td>\nSpline, shaft, bore, bearing-seat and retention details.<\/td>\n<\/tr>\n
\u0e08\u0e38\u0e14\u0e40\u0e2a\u0e35\u0e48\u0e22\u0e07<\/td>\nLoad sharing and tooth-contact errors can concentrate load on one planet path.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n
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\u0e22\u0e37\u0e19\u0e22\u0e31\u0e19\u0e2d\u0e34\u0e19\u0e40\u0e17\u0e2d\u0e23\u0e4c\u0e40\u0e1f\u0e0b\u0e02\u0e2d\u0e07\u0e14\u0e32\u0e27\u0e40\u0e04\u0e23\u0e32\u0e30\u0e2b\u0e4c\u0e17\u0e31\u0e49\u0e07\u0e2b\u0e21\u0e14<\/h2>\n<\/div>\n
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Start by identifying which planetary member is input, output or fixed, then verify the sun-to-planet mesh and the ring-gear relationship before manufacturing.<\/p>\n

When the original gearbox drawing is missing, supply tooth counts for the sun, planets and ring, plus carrier\/center-distance information so the stage can be checked as a complete gear train.<\/p>\n<\/div>\n

\"Sun<\/figure>\n<\/div>\n<\/div>\n<\/section>\n
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System-level selection for industrial planetary stages<\/h2>\n

The sun gear may be the fastest member in the stage, so tooth accuracy, runout, lubrication and shaft\/spline alignment all influence service behavior.<\/p>\n<\/div>\n

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For a new design, define the sun\/planet\/ring tooth relationship before finalizing the center interface. For replacement work, inspect the planets, ring, carrier support and lubrication condition so a new sun gear is not installed into an already damaged stage.<\/p>\n

Use the application to decide which measurements deserve the most attention: peak torque and shock for heavy equipment, backlash and runout for motion systems, or life and documentation for long-duration duty.<\/p>\n<\/div>\n

\"System-level<\/figure>\n<\/div>\n<\/div>\n<\/section>\n
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\u0e04\u0e33\u0e02\u0e2d\u0e40\u0e2a\u0e19\u0e2d\u0e23\u0e32\u0e04\u0e32 (RFQ)<\/div>\n

\u0e02\u0e2d\u0e43\u0e1a\u0e40\u0e2a\u0e19\u0e2d\u0e23\u0e32\u0e04\u0e32 \/ \u0e2a\u0e48\u0e07 RFQ<\/h2>\n

Send the gearbox drawing, sun\/planet\/ring tooth counts, input and output duty, interface dimensions and quantity. Include the gearbox nameplate when the request is for a replacement.<\/p>\n

\u0e2a\u0e48\u0e07\u0e04\u0e33\u0e02\u0e2d\u0e40\u0e2a\u0e19\u0e2d\u0e23\u0e32\u0e04\u0e32 (RFQ)<\/a><\/div>\n

MOQ<\/strong>\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e1b\u0e23\u0e31\u0e1a\u0e40\u0e1b\u0e25\u0e35\u0e48\u0e22\u0e19\u0e44\u0e14\u0e49\u0e15\u0e32\u0e21\u0e1b\u0e23\u0e30\u0e40\u0e20\u0e17\u0e2a\u0e34\u0e19\u0e04\u0e49\u0e32\u0e41\u0e25\u0e30\u0e21\u0e39\u0e25\u0e04\u0e48\u0e32\u0e01\u0e32\u0e23\u0e2a\u0e31\u0e48\u0e07\u0e0b\u0e37\u0e49\u0e2d\u0e23\u0e27\u0e21<\/span><\/div>
\u0e15\u0e31\u0e27\u0e2d\u0e22\u0e48\u0e32\u0e07<\/strong>\u0e25\u0e39\u0e01\u0e04\u0e49\u0e32\u0e43\u0e2b\u0e21\u0e48\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e2a\u0e31\u0e48\u0e07\u0e0b\u0e37\u0e49\u0e2d\u0e44\u0e14\u0e49 1-5 \u0e0a\u0e34\u0e49\u0e19 \u0e2b\u0e32\u0e01\u0e0a\u0e34\u0e49\u0e19\u0e2a\u0e48\u0e27\u0e19\u0e41\u0e25\u0e30\u0e01\u0e23\u0e30\u0e1a\u0e27\u0e19\u0e01\u0e32\u0e23\u0e40\u0e2b\u0e21\u0e32\u0e30\u0e2a\u0e21<\/span><\/div>
\u0e04\u0e33\u0e2a\u0e31\u0e48\u0e07\u0e0b\u0e37\u0e49\u0e2d\u0e41\u0e1a\u0e1a\u0e1c\u0e2a\u0e21<\/strong>\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e40\u0e25\u0e37\u0e2d\u0e01\u0e0b\u0e37\u0e49\u0e2d\u0e0a\u0e38\u0e14\u0e40\u0e1f\u0e37\u0e2d\u0e07\u0e14\u0e27\u0e07\u0e2d\u0e32\u0e17\u0e34\u0e15\u0e22\u0e4c\u0e2b\u0e23\u0e37\u0e2d\u0e0a\u0e34\u0e49\u0e19\u0e2a\u0e48\u0e27\u0e19\u0e23\u0e30\u0e1a\u0e1a\u0e40\u0e1f\u0e37\u0e2d\u0e07\u0e14\u0e32\u0e27\u0e40\u0e04\u0e23\u0e32\u0e30\u0e2b\u0e4c\u0e23\u0e38\u0e48\u0e19\u0e15\u0e48\u0e32\u0e07\u0e46 \u0e21\u0e32\u0e1c\u0e2a\u0e21\u0e1c\u0e2a\u0e32\u0e19\u0e01\u0e31\u0e19\u0e44\u0e14\u0e49 \u0e40\u0e21\u0e37\u0e48\u0e2d\u0e21\u0e39\u0e25\u0e04\u0e48\u0e32\u0e01\u0e32\u0e23\u0e2a\u0e31\u0e48\u0e07\u0e0b\u0e37\u0e49\u0e2d\u0e23\u0e27\u0e21\u0e2d\u0e22\u0e39\u0e48\u0e17\u0e35\u0e48\u0e1b\u0e23\u0e30\u0e21\u0e32\u0e13 1,500 \u0e14\u0e2d\u0e25\u0e25\u0e32\u0e23\u0e4c\u0e2a\u0e2b\u0e23\u0e31\u0e10\u0e02\u0e36\u0e49\u0e19\u0e44\u0e1b<\/span><\/div>
\u0e04\u0e33\u0e2a\u0e31\u0e48\u0e07\u0e0b\u0e37\u0e49\u0e2d\u0e02\u0e19\u0e32\u0e14\u0e40\u0e25\u0e47\u0e01<\/strong>\u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e1e\u0e34\u0e08\u0e32\u0e23\u0e13\u0e32\u0e2a\u0e31\u0e48\u0e07\u0e0b\u0e37\u0e49\u0e2d\u0e15\u0e31\u0e49\u0e07\u0e41\u0e15\u0e48 1-2 \u0e0a\u0e34\u0e49\u0e19\u0e02\u0e36\u0e49\u0e19\u0e44\u0e1b\u0e44\u0e14\u0e49 \u0e42\u0e14\u0e22\u0e1b\u0e01\u0e15\u0e34\u0e41\u0e25\u0e49\u0e27\u0e23\u0e32\u0e04\u0e32\u0e15\u0e48\u0e2d\u0e2b\u0e19\u0e48\u0e27\u0e22\u0e08\u0e30\u0e2a\u0e39\u0e07\u0e01\u0e27\u0e48\u0e32\u0e1b\u0e01\u0e15\u0e34<\/span><\/div>
\u0e08\u0e31\u0e14\u0e2a\u0e48\u0e07<\/strong>\u0e0a\u0e34\u0e49\u0e19\u0e2a\u0e48\u0e27\u0e19\u0e21\u0e32\u0e15\u0e23\u0e10\u0e32\u0e19: 10-25 \u0e27\u0e31\u0e19\u0e17\u0e33\u0e01\u0e32\u0e23 \u0e0a\u0e34\u0e49\u0e19\u0e2a\u0e48\u0e27\u0e19\u0e2a\u0e31\u0e48\u0e07\u0e17\u0e33\u0e1e\u0e34\u0e40\u0e28\u0e29: 20-45 \u0e27\u0e31\u0e19\u0e17\u0e33\u0e01\u0e32\u0e23 \u0e2d\u0e38\u0e1b\u0e01\u0e23\u0e13\u0e4c\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e42\u0e04\u0e23\u0e07\u0e01\u0e32\u0e23: 45-120 \u0e27\u0e31\u0e19\u0e17\u0e33\u0e01\u0e32\u0e23<\/span><\/div>
\u0e40\u0e07\u0e37\u0e48\u0e2d\u0e19\u0e44\u0e02\u0e01\u0e32\u0e23\u0e04\u0e49\u0e32<\/strong>EXW, FOB, CIF \u0e41\u0e25\u0e30 DAP \u0e40\u0e1b\u0e47\u0e19\u0e23\u0e39\u0e1b\u0e41\u0e1a\u0e1a\u0e2a\u0e31\u0e0d\u0e0d\u0e32\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49\u0e01\u0e31\u0e19\u0e17\u0e31\u0e48\u0e27\u0e44\u0e1b \u0e2a\u0e48\u0e27\u0e19 FCA, CFR, CPT, CIP \u0e41\u0e25\u0e30 DDP \u0e19\u0e31\u0e49\u0e19 \u0e2a\u0e32\u0e21\u0e32\u0e23\u0e16\u0e1e\u0e34\u0e08\u0e32\u0e23\u0e13\u0e32\u0e40\u0e1b\u0e47\u0e19\u0e01\u0e23\u0e13\u0e35\u0e46 \u0e44\u0e1b\u0e44\u0e14\u0e49<\/span><\/div><\/div><\/div>\n<\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"

Planetary gearboxes place the sun gear at the center of the mesh. A reliable RFQ must treat the sun gear, planet gears, ring gear and carrier geometry as one system.<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-668","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/pages\/668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/comments?post=668"}],"version-history":[{"count":3,"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/pages\/668\/revisions"}],"predecessor-version":[{"id":1047,"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/pages\/668\/revisions\/1047"}],"wp:attachment":[{"href":"https:\/\/sun-gears.net\/th\/wp-json\/wp\/v2\/media?parent=668"}],"curies":[{"name":"\u0e14\u0e31\u0e1a\u0e40\u0e1a\u0e34\u0e25\u0e22\u0e39\u0e1e\u0e35","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}