What Items Should a Ball Screw Inspection Report Include?

The inspection report should match the actual order

A ball screw inspection report should not only say passed. Buyers can ask the report to show order number, model, quantity, drawing revision, or sample requirement so receiving and after-sales records remain traceable.

List the key dimensions clearly

Common inspection items include overall length, thread length, end dimensions, bearing journals, lock threads, shoulder positions, nut movement, appearance, pre-packing condition, and tolerance range. Custom or end machined orders should pay special attention to end dimensions.

Photo records are easier to review than text only

For repair replacement, distributor stock, or machine assembly orders, request photo records of key dimensions, nut movement photos or short video, appearance photos, and pre-packing photos for review before arrival.

RFQ checklist

Inspection report fields: order number, model, quantity, drawing revision, and inspection date.
Dimension items: overall length, thread length, end dimensions, bearing journals, and key tolerance.
Function items: nut movement, backlash or preload request, appearance, and cleaning condition.
Photo records: key dimensions, nut movement, product appearance, and pre-packing condition.

Typical buyer situations

This topic usually appears in distributor stocking, repair replacement, machine retrofit, automation projects, and drawing-based purchasing. If a buyer sends only one model number, the supplier cannot judge the real use, packing risk, or whether machining upgrades are needed.

Details to confirm before quotation

To reduce repeated questions, the RFQ should cover product specification, use case, and delivery expectations together. The following points can be copied into the RFQ form or email.

Purchase purpose: distributor stock, repair replacement, machine project, or sample testing.
Specification: diameter, lead, overall length, thread length, nut type, and quantity.
Machining: cut-to-length, end machining, and whether BK/BF, FK/FF, EK/EF, or other supports must be matched.
Delivery: target quantity, expected lead time, packing, labels, shipping method, and whether shipment photos are required.

Common mistakes

A common mistake is asking only for unit price without application, quantity, or packing details. Another is sending photos without dimensions. This turns quotation into guesswork and can create errors in end machining, nut matching, or long-part shipping.

Next step

If the specification is clear, submit an RFQ directly. If the model or accuracy grade is still uncertain, describe the machine use and old part details so the supplier can recommend a standard part, bar stock, cut-to-length, or end machining route.