{"id":492,"date":"2026-09-16T05:47:58","date_gmt":"2026-09-16T05:47:58","guid":{"rendered":"https:\/\/spiralgears.top\/how-to-prepare-a-spiral-bevel-gear-rfq\/"},"modified":"2026-09-17T07:58:41","modified_gmt":"2026-09-17T07:58:41","slug":"how-to-prepare-a-spiral-bevel-gear-rfq","status":"publish","type":"post","link":"https:\/\/spiralgears.top\/fr\/how-to-prepare-a-spiral-bevel-gear-rfq\/","title":{"rendered":"Comment pr\u00e9parer une demande de devis pour un engrenage conique \u00e0 denture h\u00e9lico\u00efdale ?"},"content":{"rendered":"

A spiral bevel gear RFQ becomes easier to quote when the buyer sends the information that defines the mating pair instead of only a photo and outside diameter. The strongest enquiries combine a controlled drawing or usable sample with assembly context, duty, quantity and a clear list of what the delivered part must be checked against.<\/p>\n

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Start with the pair, not the single gear<\/h2>\n

Identify the gear and pinion together. Include which member drives, their tooth counts or ratio, right- and left-hand relationship, shaft angle and any known mounting-distance or backlash requirement. If the job is a replacement, the mating part can reveal information that a worn single component no longer shows clearly.<\/p>\n

A photograph is valuable for orientation, damage and packaging context, but it cannot prove the original tooth geometry. The drawing or a controlled reconstruction of the pair must carry that responsibility.<\/p>\n<\/div>\n<\/section>\n

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Show ratio, shaft angle and hand on one controlled definition<\/h2>\n

These variables describe different parts of the mating relationship. Ratio or tooth count tells how the members relate kinematically; shaft angle describes the axis relationship; hand and spiral direction describe the tooth orientation. Put them together in the drawing or assembly note so they cannot be interpreted independently.<\/p>\n<\/div>\n

\"Ratio<\/figure>\n<\/div>\n<\/section>\n
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Put geometry and interfaces into one package<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
RFQ item<\/th>\nWhat to send<\/th>\nWhy<\/th>\n<\/tr>\n<\/thead>\n
Couple reproducteur<\/td>\nGear + pinion identity, tooth counts\/ratio and hand<\/td>\nPrevents a single component from being quoted against an unknown mate.<\/td>\n<\/tr>\n
Shaft relationship<\/td>\nShaft angle and assembly orientation<\/td>\nDefines how the two axes intersect.<\/td>\n<\/tr>\n
Mounting position<\/td>\nMounting distance, housing\/bearing datums and target backlash<\/td>\nConnects the tooth geometry to the real assembly.<\/td>\n<\/tr>\n
Interfaces<\/td>\nBore, spline, keyway, shaft, flange and bearing journals<\/td>\nEnsures the part can be located and assembled correctly.<\/td>\n<\/tr>\n
Material \/ finish<\/td>\nMaterial, heat treatment, tooth finish and controlled hardness\/case requirements<\/td>\nDefines the required manufacturing route.<\/td>\n<\/tr>\n
Acceptation<\/td>\nTolerances, quality standard, runout\/contact checks and required records<\/td>\nDefines how the buyer will release the finished part.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n
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Show the assembly datum scheme<\/h2>\n

A drawing that specifies tooth geometry but omits the housing or shaft references can still leave a manufacturing question: how is the gear located in the actual assembly? Add shoulders, bearing seats, flange faces or housing dimensions that control the mounting position. This is especially important when backlash or contact pattern is sensitive to assembly stack-up.<\/p>\n

For a replacement, record those references before the old pair is removed. Once worn parts are on a bench, some useful installation information may be lost.<\/p>\n<\/div>\n

\"Mounting<\/figure>\n<\/div>\n<\/section>\n
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Define the process outcome you actually need<\/h2>\n

State the required material and heat treatment when they are controlled by the design. State whether the teeth are cut or ground and which quality or inspection standard applies. Avoid copying a hardness or quality grade from another gear unless it belongs to the same design requirement.<\/p>\n

When you are comparing possible production routes, an external forged bevel gear manufacturing reference<\/a> can be useful background for blank and manufacturing terminology. The production drawing and accepted quotation still control the actual spiral bevel gear order.<\/p>\n<\/div>\n<\/section>\n

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Add duty and commercial scope before the quote is finalized<\/h2>\n

Operating speed, torque or load spectrum, reversals, shock, lubrication and environment help the supplier understand why the drawing contains certain material, tooth-finish or inspection requirements. Quantity, destination and sample needs matter to setup, packing and logistics. Putting these items in the first RFQ makes later price comparisons more meaningful because suppliers are quoting the same scope.<\/p>\n

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Planification commerciale pour votre demande de devis<\/h3>\n

Pour toute demande de devis, la quantit\u00e9 minimale de commande (MOQ) est flexible et d\u00e9pend du type de produit, du proc\u00e9d\u00e9 de fabrication et du montant total de la commande. Les nouveaux projets peuvent \u00eatre \u00e9tudi\u00e9s pour 1 \u00e0 5 \u00e9chantillons \u00e0 un prix pr\u00e9f\u00e9rentiel. Diff\u00e9rents mod\u00e8les peuvent \u00eatre combin\u00e9s lorsque le total de la commande atteint environ 1\u00a0500 USD. Les commandes de 1 \u00e0 2 pi\u00e8ces sont \u00e9galement envisageables, g\u00e9n\u00e9ralement \u00e0 un co\u00fbt unitaire plus \u00e9lev\u00e9, car les frais de mise en place et de contr\u00f4le sont concentr\u00e9s sur une tr\u00e8s petite quantit\u00e9.<\/p>\n

Pour toute demande de devis, les d\u00e9lais de livraison sont g\u00e9n\u00e9ralement de 10 \u00e0 25 jours ouvr\u00e9s pour les pi\u00e8ces standard, de 20 \u00e0 45 jours ouvr\u00e9s pour les composants sur mesure et de 45 \u00e0 120 jours ouvr\u00e9s pour les \u00e9quipements ou assemblages sp\u00e9cifiques \u00e0 un projet. Les incoterms EXW, FOB, CIF et DAP sont couramment propos\u00e9s\u00a0; les incoterms FCA, CFR, CPT, CIP et DDP peuvent \u00eatre discut\u00e9s en fonction de l\u2019exp\u00e9dition et de la destination.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Final RFQ checklist<\/h2>\n