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