FEEDS FOR HIGH SPEED STEEL DRILLS
Drill Diameter-Inches	Feed In Inches Per Revolution
1/16 to 1/8	.001-.003
Over 1/8 to 1/4	.002-.006
1/4 to 1/2	.004-.010
Over 1/2 to 1"	.007-.015
Over 1"	.015-.025

SUGGESTED FEEDS AND SPEEDS FOR SPECIAL MATERIALS
Material	Speed In Feet Per Minute
Aluminum and its Alloys	200-300
Brass and Bronze (Ordinary)	150-300
Bronze (High Tensile)	70-150
Die Castings (Zinc Base)	300-400
Iron-Cast (Soft) Cast (Medium Hard) Hard Chilled Malleable	75-125 50-100 10-20 80-90
Magnesium and its Alloys	250-400
Monel Metal or High-Nickel Steel	30-50
Plastics or Similar Materials(Bakelite)	100-300
Steel-Mild .2 Carbon to .3 Carbon Steel .4 Carbon to .5 Carbon Tool 1.2 Carbon Forgings Alloy-300 to 400 Brinell	80-110 70-80 50-60 40-50 20-30
Steel-High Tensile 35-45 Rockwell C 40-45 Rockwell C 45-50 Rockwell C 50-55 Rockwell C	30-40 25-35 15-25 7-15
Stainless Steel Free Machining Grades Work Hardening Grades	30-80 15-50
Titanium Alloy Sheet	50-60
Titanium Alloy Ti-75A (Commercially Pure) RS-120 Ti-150A Ti-140A RC-130B MST 6A1-4 Va. MST 3A1-5 Cr.	50-60 40-60 40-50 30-40 30-40 20-35 10-20
Wood	300-400

FEEDS FOR CARBIDE DRILLS
Drill Diameter-Inches	Feed In Inches Per Revolution
1/16 to 1/8	.001-.002
Over 1/8 to 1/4	.002-.004
Over 1/4 to 1/2	.003-.007
Over 1/2 to 1"	.005-.012
Over 1" to 1-1/4	.008-.015

SUGGESTED SPEEDS FOR CARBIDE DRILLS
Material	Speed In Feet Per Minute
Aluminum	150-500
Brass	150-300
Bronze	150-300
Cast Iron (Soft) Drill Sizes 1/8 thru 1" Drill Sizes Over 1" Chilled Hard	90-165 125 30-50 100-140
Copper	200-300
Non-Ferrous Alloys	150-200
Plastic Phenolic, etc. Glass Bonded	100-200 50-125
Rubber	200-300
Wood	200
Glass	20
*Steel (Over 450 Brinell)	75-100

Regal Cutting Tools
5330 East Rockton Road - Roscoe, IL - 61073
Phone 1-800-435-2948 | Fax 1-800-992-1674