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.
Start with the pair, not the single gear
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.
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.
Show ratio, shaft angle and hand on one controlled definition
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.
Put geometry and interfaces into one package
| RFQ item | What to send | Why |
|---|---|---|
| Mating pair | Gear + pinion identity, tooth counts/ratio and hand | Prevents a single component from being quoted against an unknown mate. |
| Shaft relationship | Shaft angle and assembly orientation | Defines how the two axes intersect. |
| Mounting position | Mounting distance, housing/bearing datums and target backlash | Connects the tooth geometry to the real assembly. |
| Interfaces | Bore, spline, keyway, shaft, flange and bearing journals | Ensures the part can be located and assembled correctly. |
| Material / finish | Material, heat treatment, tooth finish and controlled hardness/case requirements | Defines the required manufacturing route. |
| Acceptance | Tolerances, quality standard, runout/contact checks and required records | Defines how the buyer will release the finished part. |
Show the assembly datum scheme
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.
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.
Define the process outcome you actually need
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.
When you are comparing possible production routes, an external forged bevel gear manufacturing reference can be useful background for blank and manufacturing terminology. The production drawing and accepted quotation still control the actual spiral bevel gear order.
Add duty and commercial scope before the quote is finalized
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.
Commercial planning for your RFQ
For request a quote planning, MOQ is flexible and depends on product form, processing route and overall order value. Suitable new projects may be reviewed for 1–5 sample pieces at sample pricing. Different models can be combined when the order total reaches about USD 1,500. Orders of 1–2 pieces can also be considered, usually at a higher unit cost because setup and inspection are spread across a very small quantity.
For request a quote delivery planning, typical windows are 10–25 working days for standard parts, 20–45 working days for customized components and 45–120 working days for project-type equipment or assemblies. EXW, FOB, CIF and DAP are commonly supported; FCA, CFR, CPT, CIP and DDP can be discussed for the specific shipment and destination.
Final RFQ checklist
- Current controlled drawing or the clearest available legacy data
- Gear + pinion relationship and quantities
- Ratio/tooth counts, tooth system, hand and shaft angle
- Mounting datums, backlash target and assembly context
- Bore, spline, keyway, shaft or flange interfaces
- Material, heat treatment, finish and quality requirements
- Duty, environment and lubrication context
- Inspection records required with the shipment
- Destination, sample quantity and preferred Incoterm
Send the gear pair, drawing and duty in one RFQ.
The more clearly the mating relationship and assembly datums are defined, the faster the configuration can be reviewed.
Ordering & delivery guidance
MOQ is flexible by product type, manufacturing route and total order value. Suitable new projects may request 1–5 sample pieces at sample pricing. Mixed models can be combined when the order total reaches approximately USD 1,500. Orders of 1–2 pieces can be reviewed, although unit cost is normally higher.
Typical planning windows are 10–25 working days for standard parts, 20–45 working days for customized components and 45–120 working days for project-type equipment or assemblies. EXW, FOB, CIF and DAP are commonly supported; FCA, CFR, CPT, CIP and DDP can be discussed for the shipment.
