What Information Is Needed for a Custom Ball Screw RFQ
Before requesting a custom ball screw quote, list the drawing, dimensions, accuracy, quantity, and packing requirements.
Open custom RFQ formGuide categories
List the specifications, drawings, quantity, application, packing, and timing details needed in a first RFQ email.
Start with the purchasing type: a complete standard assembly, full bar stock, cut-to-length parts, end machining, replacement of an old part, or distributor stock. Each route follows a different quoting path. Standard parts are checked against model, nut fit and stock; bar stock is priced on material and cutting; machined parts are priced from the drawing and the operations it needs. Leave the type out and the supplier can only quote the broadest case, or send a question back. That spends the first round on nothing.
Then close each line item. One row per model should carry diameter and lead, overall length, thread length, nut style and nut quantity, quantity, the accuracy requirement or the machine it goes on, packing, destination and target date. A mixed order cannot be reduced to a single total quantity, because a total hides the batch structure and forces a cautious estimate. Fields you genuinely do not know yet can be marked as pending, as long as you say who will decide them and when. That is far more useful than an empty field.
A quotation is tied to the material price, exchange rate, stock position and production slot at the time it was written. Validity is therefore a working condition, not a formality. Payment terms carry the same weight: the deposit share, the balance trigger, who absorbs bank charges, and the exact point the delivery period starts. State whether it starts when the deposit lands, when the drawing is approved, or only when both are done. One extra line at quotation stage saves a round of emails on payment day and keeps the production slot stable.
Drawing changes and quantity changes both need re-confirmation, and one question decides whether a full re-quote is required: does the change alter how the part is machined or how it is inspected? If it does, ask for a new quotation and state whether the earlier one is withdrawn. If it does not, a written note on the existing quotation is enough. Quantity moves more than unit price: more models in the mix changes batch planning, more long parts changes the packing and freight structure. Send the old drawing, the revised drawing, the version number, the change list and the new quantity list in one message, so cost, timing and re-sampling can be judged together.
Before requesting a custom ball screw quote, list the drawing, dimensions, accuracy, quantity, and packing requirements.
Open custom RFQ form
In the first RFQ email, state the purchase type, model, length, nut, quantity, packing, and required lead time.
Open standard parts RFQ
With a drawing, confirm revision and tolerances; without one, provide old-part photos, measurements, and application information.
Send drawing or old-part details
List each model, length, quantity, nut, and packing requirement on a separate RFQ table row.
Send multi-model RFQ list
The same model can carry different prices because the quotation scope differs. Align material, grade, nut, machining, quantity, packing, and freight before comparing unit price.
Send cost details
Keep problem photos, order records, installation direction, lubrication, runtime, and inspection data for the next RFQ.
Send after-sales feedback record
Drawing changes after quotation must reconfirm revision, end dimensions, nut style, and tolerance, and may require a requote.
Send drawing change confirmation
Quotation validity is not a formality; quantity, exchange rate, material price, freight, and lead time changes can affect the final order.
Send quotation validity confirmation
Sample and batch orders are quoted differently, so the RFQ should state testing plan, first order, and later replenishment rhythm early.
Send sample-to-batch plan
After receiving a ball screw quotation, buyers should compare more than unit price and confirm specification, machining, packing, and lead time boundaries.
Send quotation confirmation details
Ball screw supplier comparison should look beyond unit price because accuracy, machining, packing, inspection, and response affect real purchasing cost.
Send supplier comparison checklist
Before production, buyers should lock drawing revision, end machining, nut direction, labels, packing, and inspection requirements.
Send pre-production confirmation
Repeat orders still need previous order number, model list, quantity, drawing revision, labels, packing, and a new lead time plan.
Send repeat order list
Urgent repair RFQs need clear lead time, old part information, and acceptable alternatives so the supplier can judge the fastest feasible route.
Send urgent repair RFQGuide categories
Send the model, length, quantity, application, or old-part photos. We will review the specification against the actual machine and use case.
Put the items below into the same message. In most cases the reply is a price you can execute on, rather than a request for missing information.
FAQ
These three come up at quotation stage more than any others, and each one decides how many emails follow.
Yes, but the quotation will carry conditions. Without diameter and lead, length, nut style and quantity, the supplier can only price a general configuration, and any later difference has to be reconfirmed. Marking the unknowns is more useful than leaving them out.
Check the scope it covers first: models, quantity, accuracy, machining, packing, destination, and when the delivery period starts. If nothing changed, the quotation can be used as issued. If any single item moved, ask for an updated quotation instead of releasing production on the old scope.
Quantity changes more than the unit price. Batch planning for mixed models, packing for long parts and the freight structure all follow it. Send the new quantity list with the models grouped, and reconfirm once rather than correcting it during production.
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