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
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