Buyer decision table
Confirm the BK/BF support model before machining the shaft ends. A support-unit model or drawing must be checked before shaft-end machining because fixed-side and support-side dimensions vary by the assembly.
| Assembly point | What to confirm | Risk if skipped |
|---|---|---|
| Fixed side BK | Bearing seat diameter, shoulder, thread, lock nut | Screw may not clamp correctly. |
| Supported side BF | Support diameter and length | End may not fit the support unit. |
| Overall length | End machining plus thread length | Stroke or mounting position may shift. |
| Nut orientation | Flange direction and lubrication access | Assembly may conflict with the machine layout. |
RFQ checklist
- Send the BK/BF model or support unit drawing if already selected.
- Confirm screw diameter, lead, total length, thread length, and nut type.
- Provide both fixed-side and supported-side end machining dimensions.
- Mark bearing seat tolerance, thread specification, keyway, and lock nut requirements.
- Include quantity, application, destination, packing, and inspection report needs.
What buyers should compare before requesting a quote
- Machine accuracy and repeatability requirement.
- Screw diameter, lead, travel, speed, load, and mounting orientation.
- Required grade, preload or backlash requirement, end machining, inspection, quantity, and delivery target.
Send us the support unit plan
Send weimute your BK/BF support unit model and end machining drawing together. Our BK/BF end machining service team will check whether the drawing matches the support units before quoting production.
FAQ
Can I choose BK/BF after ordering the screw? It is safer to confirm support units before machining, because shaft-end dimensions depend on them.
Does weimute need the whole machine drawing? Usually no. The end machining drawing, support unit model, nut orientation, and total length are enough for quotation review.
Next step
Turn this guide into an RFQ
When the specification direction is clear, send the details below together with quantity, lead time, and packing requirements.
Include these details
- Support-unit model, end drawing, or old-part end photos.
- Bearing journal, shoulder, lock thread, keyway, and coupling-end dimensions.
- Overall length, thread length, quantity, inspection, and packing requirements.
Category
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