DRILL PRESS SPEED CHART



Recommended operating speeds (RPM)
Accessory Softwood Hardwood Acrylic Brass Aluminum Steel Shop Notes
(Pine) ()
*
1/16″ – 3/16″ 3000 3000 2500 3000 3000 3000

Lubricate drill with oil when cutting steel 1/8″ or thicker. Use on all holes to prevent drill from wandering.

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 NR 400 1000 350
Black & Decker Bullet pilot-point bits*
1/8″ – 3/16″ 3000 3000 3000 2000 1500 3000

Good all-around bit.
These cut more quickly than brad points
and .

1/4″ – 3/8″ 3000 3000 2400 1500 1000 2000
1/2″ 3000 1500 1600 1500 750 1200
Brad-point bit
1/8″ 1800 1200 1500 NR NR NR

Raise 1/4″ and smaller bits often to clear
shavings and prevent heat build-up.

1/4″ 1800 1000 1500 NR NR NR
3/8″ 1800 750 1500 NR NR NR
1/2″ 1800 750 1000 NR NR NR
5/8″ 1800 500 750 NR NR NR
3/4″ 1400 250 750 NR NR NR
3/8″ 1200 250 500 NR NR NR
1″ 1000 250 250 NR NR NR
1/4″ – 3/8″ 2400 700 NR NR NR NR

Raise 1/4-3/8″ bits often to clear shavings
and prevent heat build-up.
Make several shallow passes with larger
bits; allow bit to cool between passes.

1/2″ – 5/8″ 2400 500 250 NR NR NR
3/4″ – 1″ 1500 500 250 NR NR NR
11/8″ – 11/4″ 1000 250 250 NR NR NR
13/8″ – 2″ 500 250 NR NR NR NR
Glass-and-tile bits (Listed speeds are for glass and tile—not softwood.)
1/8″ 50 N N N N N

Wear . Use drill press
only. Do not apply excessive pressure.
Lubricate with water while drilling.
Reduce quill pressure when bit tip
emerges from back side.

3/16″ 600 R R R R R
1/4″ 500 NR NR NR NR NR
5/16″ 400 NR NR NR NR NR
3/8″ 350 NR NR NR NR NR
1/2″ 200 NR NR NR NR NR
Hole saws*
1″ – 11/2″ 500 350 NR 250 250 NR

Do not use with brass or aluminum
thicker than 1/16″.
Avoid dense hardwoods such as hard
maple.

15/8″ – 2″ 500 250 NR 150 250 NR
21/8″ – 21/2″ 250-500 NR NR 150 250 NR
Multi spur bits*
21/8″ – 4″ 250 250 NR NR NR NR

Smaller sizes also available; use Forstner speeds.

Spade bits*
1/4″ – 1/2″ 2000 1500 NR NR NR NR

Clamp work to table to improve quality
of hole.

5/8″ – 1″ 1750 1500 NR NR NR NR
11/8″ – 11/2″ 1500 1000 NR NR NR NR
Spade bits with spurs
3/8″ – 1″ 2000 1800 500 NR NR NR

Best bit for acrylic. Clamp work securely.

Stanley Powerbore bits*
3/8″ – 1/2″ 1800 500 NR NR NR NR

Ideal for deep holes and end-grain drilling.

3/4″ – 1″ 1800 750 NR NR NR NR
Circle cutters*
11/2 – 3″ 500 250 250 NR NR NR

Drill one side, flip material over, place
center bit in its hole, and resume cut.

31/4″ – 6″ 250 250 250 NR NR NR
Shear-cutting countersinks
1/4″ – 3/8″ 1000 1000 700 700-1000 700-1000 NR

Cuts cleaner than traditional countersinks.

1/4″ – 3/8″ 750 700 700 250-700 250-700 NR
Countersinks
2-flute 1400 1400 NR NR NR NR

Raise and lower frequently for quicker
cutting.

5-flute 1000 750 750 250 250 250
Countersink screw pilot bits
All sizes 1500 1000 500 500 NR NR

Clear twist drill often.

Taper drill bits with countersinks
All sizes 500 250 250 NR NR NR

Clear bit often to prevent heat build-up.

Plug cutters
All sizes 1000 500 NR NR NR NR

Cut to full depth so bit chamfers plug.

Drum sanders
Hard rubber 750 1500 750 NR NR NR

Avoid load-up and overheating.
Decrease air pressure for fine contours.

Soft sleeveless 500 750 750 NR NR NR
3″ pneumatic 1750 1750 1750 NR NR NR
5″ flex discs 750 500 500 500 NR NR

Adhesive-backed discs work best.

Polishing wheels 1500 1500 1500 1500 2000 NR

Use light pressure.

Flap sanders 2000 2000 2000 2000 2000 2400

Hold work firmly.

Grinding wheels NR NR NR NR NR 3000

Use 6″ or smaller wheel.

NR – Not recommended * Back material to prevent chip-out. Always wear a face shield for optimum protection.
Notes
– Recommendations are based on visual and tactile tests under shop conditions.
Drilling faster than recommended can cause overheating. Speeds slower than those recommended may cause poorquality holes.
– All testing done on face grain. Reduce speed when drilling into end grain.
– Speeds based on new bits from the factory.