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Professional Grade SF-5 1/4 inch Carbide Burr Rotary File
The SF-5 tree-radius burr in professional grade – one proven geometry, tube-packed, dimension-verified.
Design and Construction
SF-5: tree shape with radius end, 6 mm head class, on a 1/4 inch shank – the professional standard for radius blending. Ground to the published dimension table and tube-packed with the code printed.
How It Works
The radius-end tree rolls along transitions without stepping; at about 40,000 RPM it blends radii and dresses welds in controlled passes.
Applications
Radius blending, weld dressing, mould and die finishing, fabrication rework.
Field Cases
- Mould shop: SF-5 blends EDM transitions where a cylinder stepped.
- Fabricator: crown blending on 6 mm plate welds – the standard code every hand knows.
- Maintenance: tube codes ended shape mix-ups between shifts.
Performance Data
| Metric | Value / Observation |
|---|---|
| Geometry | SF tree with radius end, 6 mm class |
| Speed reference | About 40,000 RPM starting in steel |
| Dimension control | Published-table verified |
| Hardness | 1,300-1,500 HV |
Suitable Materials
Steel, cast iron, stainless steel and non-ferrous metals.
Material Comparison: SF-5 vs a Generic Tree Burr
What professional grade means against an unbranded tree head:
| Factor | SF-5 Professional (this burr) | Generic Tree Head |
|---|---|---|
| Radius profile | Template-verified to the SF drawing | Approximate curve |
| Dimension | Published table values | No published geometry |
| Balance | Runout-checked | Unchecked |
| Reorder | By code – identical replacement | Descriptive reorder |
| Regrind service | Available | Rarely offered |
Delivery Scope
Burr in printed tube; other SF sizes stocked for the ladder.
Why Choose VPOINT
A single proven code, dimension-verified – the professional default.
Precision & Quality Control
Radius profile template-checked per batch.
Specifications
Code information:
| Item | Specification |
|---|---|
| Code | SF-5 |
| Head | Tree with radius end, 6 mm class |
| Shank | 6 mm (1/4″) |
| Cut type | Double cut |
Frequently Asked Questions
What does SF-5 mean?
Tree shape with radius end, 6 mm size class.
Why professional grade?
Template-verified profile, runout check, published dimensions.
Other sizes?
The SF ladder runs from 3 to 16 mm.
Tube or case?
Printed tube; sets available.
Regrind?
Yes – VPOINT offers it.
Related Search Terms
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