How to Read a Ball Screw Inspection Report

Inspection should match the application

A useful inspection report is not simply a thick document. It should cover the buyer risk. Standard parts, distributor stock, repair replacement, and high-accuracy projects focus on different inspection points.

Common inspection points

Common points include appearance, diameter, lead, overall length, thread length, end dimensions, runout, nut running condition, and packing condition. Demanding projects may need clearer accuracy or preload confirmation.

Photos are also quality records

For export orders, product photos, label photos, packing photos, and key dimension photos before shipment reduce receiving disputes. Distributors especially need these records for local customer confirmation.

State which inspection points are needed.
Confirm whether dimension photos or data are required.
Describe accuracy grade, preload, or backlash requirement.
Ask for product, label, and packing photos before shipment.

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.