Alfa Tools General Product Catalog

Carbide & High-Speed Steel Burrs

• A full line of burrs for a wide range of applications • A wide selection of fluting styles • Extra-long shanks available • Miniature burrs • State-of-the-art CNC precision made • Made in the U.S.A.

Speed & Applications • Cross-Reference Chart

APPLICATIONS & SPEED REFERENCE CHARTS

APPLICATIONS

GENERAL BURR SPEED RECOMMENDATIONS

SUITABILITY

MATERIAL CUTTING

The following chart is a general and approximate recommendation Variations to achieve desired results may be necessary

Single Cut Double Cut

Alumacut

Aluminum

n

Burr

Brass

n

n

Recommended

Diameter

(RPM)

Bronze

n

n

SOLID CARBIDE

n *

Carbon Fiber

Carbon Steel

n

n

1/16" or 1 5mm 1/8" or 3mm 3/16" or 5mm 1/4" or 6mm

60,000 - 90,000 45,000 - 50,000 35,000 - 40,000 30,000 - 35,000 35,000 - 40,000 25,000 - 30,000 25,000 - 30,000 25,000 - 30,000 20,000 - 25,000 20,000 - 25,000 15,000 - 20,000 15,000 - 20,000 12,000 - 18,000

Cast Iron

n

n

Copper

n

n

n *

Fiberglass

CARBIDE HEAD BRAZED TO STEEL SHANK

Hard Rubber

n

n

3/16" on 1/8" shank 1/4" on 1/8" shank 5/16" on 1/4" shank 3/8" on 1/4" shank 7/16" on 1/4" shank 1/2" on 1/4" shank 5/8" on 1/4" shank 3/4" on 1/4" shank 1" on 1/4" shank

Inconel

n

n

Magnesium

n

Plastics

n

n

n

Stainless Steel

n

n

C

Steel - 45-55Rc

n

n

Steel - 55-60Rc

n

n

Steel - Nickel Chrome

n

n

Steel - Weldments

n

n

Burrs up to 1/4" head diameter are solid carbide. Sizes larger that 1/4" diameter feature solid carbide heads brazed to heat treated shanks.

Titanium

n

n

Zinc

n

* Diamond cut burrs are recommended for carbon fiber and fiberglass  and are available by special order. Double cut burrs may be effective,  but they carry a greater risk of shredding the fiber weave.

GENERAL USE • Adjust speeds as needed for optimum performance. Use slower speeds for harder materials and cutting with long shank burrs. Use higher speeds for cutting with smaller diameter burrs. • Do not run above maximum speeds. This will cause premature wear and damage to burr teeth. • Do not run below minimum speeds. This may cause chipping. • All other tools and collets should be in good condition. Using worn tools will cause chipping.

• Not for use in portable drill motors. • Apply constant pressure while cutting.

C-3