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Burs — Carbide

Selection by Cut:

Simple Cut:
- Provides the best surface finish and largest contact patch on the work piece.
- Demands greater operator skill since the single flute direction pulls the bur into the work piece.

Double Cut:
- Most popular geometry as the dual flute direction reduces the contact patch on the work piece and
therefore provides easier operator control while still maintaining a good surface finish.

Aluminum Cut:
- These burs employ a coarser flute which results in improved cutting performance for aluminum and
aluminum alloys.

      CARBIDE BURS - SPEEDS

CUTTING DIA. SUGGESTED RPM MAXIMUM RPM

1/16  55,000 - 85,000        90,000

1/8   35,000 - 65,000        80,000

3/16  30,000 - 55,000        70,000

1/4   25,000 - 50,000        70,000

5/16  20,000 - 40,000        67,000

3/8   18,000 - 40,000        63,000

7/16  16,000 - 38,000        58,000

1/2   14,000 - 36,000        50,000

5/8   12,000 - 25,000        40,000

3/4   10,000 - 20,000        33,000

1     7,500 - 20,000         25,000

When using double cut: Reduce speeds by 25% approximately.
For Stainless steel material: Increase speeds by 50% approximately.
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