RFQ PREPARATION / CNC MACHINING INSIGHTS
A bearing-seat feature is not only a bore diameter. The drawing package should make clear what the bore relates to, how the bearing is retained or located, and which surfaces establish the functional assembly reference. That context helps an RFQ review focus on the actual interface.
Show the bearing interface, not just the bore
A bore may receive a bearing, bushing or another cylindrical component, but the part function often depends on nearby shoulders, faces, housings or shafts. Include enough mating information to show how the component seats and what prevents axial movement or misalignment.
Our assembly-fit guide explains how to provide relevant mating geometry without making an RFQ package unnecessarily complex.
Identify the functional references
| Feature | Functional question | Useful drawing information |
|---|---|---|
| Bore | What component does it receive? | Controlled diameter, depth or through condition, and the relevant assembly reference. |
| Shoulder | Does it establish axial seating? | Location, face relationship and any contact requirement. |
| Mounting face | How does the housing relate to the larger assembly? | Functional reference and critical dimensions relative to the bore. |
| Retention feature | What holds the component in its intended position? | Geometry and relationship to the bearing or mating component. |
Use a section view where it helps make the bore, shoulder and surrounding material easy to interpret. A current model can provide geometry, while the PDF drawing records the released requirements.
Link dimensions to the assembly reference
Dimensions are most helpful when they trace to the faces and features that matter in assembly. If a bore must relate to a mounting face or a locating feature, make that reference visible. Our CNC drawing datums guide gives a practical framework for selecting such references.
Set inspection priorities by function
Not every feature around a bearing seat needs the same level of attention. Identify the bore, seating face or alignment relationship that controls fit or motion, and keep the inspection expectation tied to that purpose. Avoid relying on an unlabeled CAD view to communicate what is critical.
See our CNC inspection requirements guide for information buyers can provide before production release.
Questions for the RFQ package
- What component does the bore receive?
- Which face or shoulder controls seating?
- How does the feature relate to the mounting or locating references?
- Are there relevant mating parts, retention features or assembly views?
- Which released dimensions affect fit, alignment or contact?
Keep the interface explicit
ExactMach coordinates drawing-defined CNC milling, CNC turning, prototypes and custom parts around Shenzhen and Dongguan for international orders. Clear bearing-seat notes help the manufacturing review understand the released assembly interface before production starts.