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FEEDS FOR CARBIDE DRILLS
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Drill Diameter-Inches
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Feed In Inches Per Revolution
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1/16 to 1/8
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.001-.002
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| Over 1/8 to 1/4 |
.002-.004
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| Over 1/4 to 1/2 |
.003-.007
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| Over 1/2 to 1" |
.005-.012
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| Over 1" to 1-1/4 |
.008-.015
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SUGGESTED SPEEDS FOR CARBIDE DRILLS
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Material
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Speed In Feet Per Minute
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Aluminum
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150-500
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Brass
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150-300
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Bronze
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150-300
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Cast Iron (Soft)
Drill Sizes 1/8 thru 1"
Drill Sizes Over 1"
Chilled
Hard
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90-165
125
30-50
100-140
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Copper
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200-300
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Non-Ferrous Alloys
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150-200
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Plastic
Phenolic, etc.
Glass Bonded
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100-200
50-125
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Rubber
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200-300
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Wood
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200
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Glass
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20
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*Steel (Over 450 Brinell)
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75-100
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