Skip to main content

Drill Bit Speeds

DRILL BIT SPEEDS

Sizes are in inches and speeds are in RPM's

Twist Drill Speed Softwood Hardword Acrylic Brass Aluminium Steel
Size (inches) Speed (RPM)
1/4 - 3/16" 3000 3000 2500 3000 3000 3000
1/4 - 3/8" 3000 1500 2000 1200 2500 1000
7/16 - 5/8" 1500 750 1500 750 1500 600
11/16 - 1" 750 500 * 400 1000 350