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Multi-Shape Aluminum Tooth Rotary Burr Set 1/4″ Shank for Die Grinders
Aluminum-cut tree-point carbide burr set on 1/4″ shanks; SG series solid and brazed heads from 3 to 6 mm for die grinders.
Design and Construction — a VPOINT solid tungsten carbide rotary burr for die grinders, sized for steel / stainless welds and similar work. YG8 carbide at HRA 89–91; die-grinder reference speeds are in the performance table below, with the flute-style guidance in the FAQ. ISO 9001 production, batch-verified, custom sizes from drawings.
Design and Construction
This set combines tree-shape-with-end-cut carbide burrs on 6 mm (1/4″) shanks. Heads are offered as solid carbide (3 mm head) or silver-brazed carbide heads (4-6 mm) on steel shanks. The coarse “aluminum tooth” (Aluma cut) flute opens the chip gullets so soft, gummy material such as aluminum and plastics clears instead of loading the flutes.
How It Works
Mounted in a die grinder or rotary tool, the burr is run at 6,000-50,000 RPM. The coarse single-row flutes shear soft material in large chips; the end cut allows plunge and finish work in corners and along edges.
Applications
Aluminum profiling, non-ferrous weld dressing, plastics and FRP trimming, pipe and tube deburring, porting and general die-grinder work.
Suitable Materials
Aluminum and other soft non-ferrous metals, plastics, FRP, rubber, wood. For hardened steel use a double-cut burr instead.
Field Cases
- Truck-bed repair shop: strips a 2 mm weld bead along 6061 sheet with the Aluma head in one pass – a double-cut burr on the same joint loaded twice and needed pick cleaning.
- Radiator shop: opens collapsed tube ends in copper-brass cores; the open gullets keep soft solder chips from packing.
- Pattern shop: roughs PVC and Renshape model blocks where fine flutes clog within seconds.
Performance Data
| Metric | Value / Observation |
|---|---|
| Flute efficiency gain | Optimised tooth geometry improves cutting efficiency by roughly 30-50% vs a mismatched cut (industry grinding data) |
| Starting speed, 6 mm in aluminium | About 40,000 RPM – high speed helps flick chips out of the gullets |
| Lubrication tip | A film of beeswax or cutting wax prevents aluminium welding to the flutes |
| Head hardness | 1,300-1,500 HV carbide vs 240-300 HV HSS |
Material Comparison: Cut Style Showdown for Aluminium Work
How the aluminium-tooth (Aluma) cut earns its keep against the two common alternatives – typical industry data:
| Factor | Aluma Cut (this set) | Standard Double Cut | HSS Burr |
|---|---|---|---|
| Flute pattern | Coarse open gullets (Aluma cut) | Crossed flutes (double cut) | Conventional flutes |
| Chip behaviour in aluminium | Large chips clear before they weld | Fine chips tend to pack the gullets | Chips smear and load fastest |
| Usable speed (6 mm head) | 15,000-25,000 RPM | 20,000-40,000 RPM | 20,000-40,000 RPM |
| Loading risk on 6061 aluminium | Low – designed for non-ferrous | High without lubricant | Highest |
| Finish left behind | Slightly rough, fast | Smooth | Smooth but only until it loads |
| Best role | Aluminium and soft non-ferrous removal | Steel, stainless, cast iron | Light finishing only |
Delivery Scope
Set of burrs supplied in a plastic case. Custom head shapes, shank lengths and laser marking available on request.
Why Choose VPOINT
VPOINT TOOLS has manufactured precision cutting tools since 2008 in two production bases (Sichuan and Dongguan, China) under ISO 9001 quality management. Every carbide burr is supported by a one-year warranty, custom and non-standard engraving service, and regrinding service. Aluminum-cut flute geometry is ground in-house and can be tailored to your workpiece.
Precision & Quality Control
Each burr is checked for flute geometry, cutting-edge sharpness, shank runout and concentricity at micrometre level before packing; production batches are traceable and packed per ISO 9001 procedures.
Specifications
G shape (tree with end cut), coarse aluminum-tooth cut, 6 mm shank:
| Tool No. | Cut dia. (d1) | Cut length (l2) | Shank (d2) | Over length (l1) | Head |
|---|---|---|---|---|---|
| SG30314 | 3 mm | 14 mm | 3 mm | 38 mm | Solid carbide |
| SG30413 | 4 mm | 13 mm | 3 mm | 51 mm | Brazed head |
| SG30513 | 5 mm | 13 mm | 3 mm | 51 mm | Brazed head |
| SG30613 | 6 mm | 13 mm | 3 mm | 51 mm | Brazed head |
Frequently Asked Questions
Which cut direction — R or L?
＋Right-cut suits standard forward feeding on right-handed grinders; left-cut is for reverse feeding or left-handed work. Match the direction to your grinding posture.
Coated or uncoated heads?
＋TiAlN adds heat resistance for stainless; DLC lubricity suits aluminium; uncoated YG8 is the all-round steel choice. The coating pays for itself on hard, gummy stock.
How do I extend edge life?
＋Keep rpm inside the table band, use light pressure, and clean the flutes — packed chips are the main killer of burr edges.
Is the burr made of solid tungsten carbide?
Yes. The cutting head is solid tungsten carbide for the 3 mm head, or a silver-brazed tungsten carbide head on a steel shank for the 4-6 mm sizes.
Which shank sizes are available?
All burrs in this set use a 6 mm (1/4″) cylindrical shank for standard die grinders and collets.
What speed should I run the burr at?
Run between 6,000 and 50,000 RPM depending on the cutter diameter; use the lower end for larger diameters and the higher end for fine detail work.
Which materials can I machine with it?
Designed for aluminum and soft non-ferrous metals; also suitable for plastics, FRP and wood. Use double-cut burrs for hardened steel.
Do you accept custom or non-standard sizes?
Yes. VPOINT supports custom shapes, sizes, shank lengths and laser marking on non-standard orders (minimum order quantity applies).
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＋Key words: carbide rotary burr, rotary burr set, double cut carbide burr, aluminium cut burr, tire reamer bit, burr blanks, carbide burr 6mm shank, TiAlN coated burr, rotary file, carbide burr for steel, carbide burr for aluminum, reversible knives, rota-tip bit, constant cutting diameter, rotate insert 90 degrees, double the cutting life, on-machine knife change, ER collet, 1/2-inch shank insert bit, die grinder, metal deburring, weld seam removal, weld cleanup, weld bead blending, weld bevel prep, porting cylinder heads, engine port work, casting cleanup, mould and die work, mold polishing, fabrication cleanup, plasma-cut edge smoothing, mill scale removal, rust removal, tube notching, exhaust weld grinding, frame repair, tool and die, art metalwork, knife making, steel deburring, stainless steel finishing, cast iron repair, aluminum porting, non-ferrous shaping
Sources & standards: ISO 9001 quality management · UNSPSC commodity codes · eClass product classification
