{"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\/vi\/how-to-prepare-a-spiral-bevel-gear-rfq\/","title":{"rendered":"How to Prepare a Spiral Bevel Gear RFQ"},"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

\n
\n

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

\n
\n
\n

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
\n
\n

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
C\u1eb7p giao ph\u1ed1i<\/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
Ch\u1ea5p nh\u1eadn<\/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
\n
\n
\n

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
\n
\n

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

\n
\n

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

\n

L\u1eadp k\u1ebf ho\u1ea1ch th\u01b0\u01a1ng m\u1ea1i cho y\u00eau c\u1ea7u b\u00e1o gi\u00e1 c\u1ee7a b\u1ea1n.<\/h3>\n

\u0110\u1ed1i v\u1edbi vi\u1ec7c l\u1eadp k\u1ebf ho\u1ea1ch b\u00e1o gi\u00e1, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1eb7t h\u00e0ng t\u1ed1i thi\u1ec3u (MOQ) linh ho\u1ea1t v\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o h\u00ecnh th\u1ee9c s\u1ea3n ph\u1ea9m, quy tr\u00ecnh gia c\u00f4ng v\u00e0 t\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u01a1n h\u00e0ng. C\u00e1c d\u1ef1 \u00e1n m\u1edbi ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t v\u1edbi 1-5 m\u1eabu s\u1ea3n ph\u1ea9m v\u1edbi gi\u00e1 m\u1eabu. C\u00e1c m\u1eabu kh\u00e1c nhau c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p khi t\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u01a1n h\u00e0ng \u0111\u1ea1t kho\u1ea3ng 1.500 USD. C\u00e1c \u0111\u01a1n h\u00e0ng t\u1eeb 1-2 s\u1ea3n ph\u1ea9m c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t, th\u01b0\u1eddng v\u1edbi chi ph\u00ed \u0111\u01a1n v\u1ecb cao h\u01a1n v\u00ec chi ph\u00ed thi\u1ebft l\u1eadp v\u00e0 ki\u1ec3m tra \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 tr\u00ean m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng r\u1ea5t nh\u1ecf.<\/p>\n

\u0110\u1ed1i v\u1edbi y\u00eau c\u1ea7u b\u00e1o gi\u00e1 v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch giao h\u00e0ng, th\u1eddi gian giao h\u00e0ng th\u00f4ng th\u01b0\u1eddng l\u00e0 10-25 ng\u00e0y l\u00e0m vi\u1ec7c \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn ti\u00eau chu\u1ea9n, 20-45 ng\u00e0y l\u00e0m vi\u1ec7c \u0111\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n t\u00f9y ch\u1ec9nh v\u00e0 45-120 ng\u00e0y l\u00e0m vi\u1ec7c \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb ho\u1eb7c c\u1ee5m l\u1eafp r\u00e1p theo d\u1ef1 \u00e1n. C\u00e1c \u0111i\u1ec1u kho\u1ea3n EXW, FOB, CIF v\u00e0 DAP th\u01b0\u1eddng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3; FCA, CFR, CPT, CIP v\u00e0 DDP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn t\u00f9y thu\u1ed9c v\u00e0o l\u00f4 h\u00e0ng v\u00e0 \u0111i\u1ec3m \u0111\u1ebfn c\u1ee5 th\u1ec3.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\n
\n

Final RFQ checklist<\/h2>\n