Twist/Brad Point Drill Bits

Soft Wood Hard Wood Plastic Brass Aluminum Mild Steel

1/16" – 3/16"

3000

2500

2500

2500

3000

2500

13/64" – 3/8"

2000

1500

2000

1250

2500

1250

25/64" – 5/8"

1500

750

1500

750

1500

600

11/16" – 1"

750

500

1000

400

1000

350

Spade/Forstner Bits

Soft Wood Hard Wood Plastic Brass Aluminum Mild Steel

1/4" – 1/2"

2000

1500

 

 

 

 

9/16" – 1"

1500

1250

 

 

 

 

1-1/8"1-7/8"

1000

750

 

 

 

 

2–3"

500

350

 

 

 

 

Hole Saws

Soft Wood Hard Wood Plastic Brass Aluminum Mild Steel

1/2" – 7/8"

500

500

600

600

600

500

1" – 1-7/8"

400

400

500

500

500

400

2" – 2-7/8"

300

300

400

400

400

300

3" – 3-7/8"

200

200

300

300

300

200

4" – 5"

100

100

200

200

200

100

Rosette Cutters

Soft Wood Hard Wood Plastic Brass Aluminum Mild Steel

Carbide Insert Type

350

250

 

 

 

 

One-Piece Type

1800

500

 

 

 

 

Tenon/Plug Cutters

Soft Wood Hard Wood Plastic Brass Aluminum Mild Steel

3/8" – 1/2"

1200

1000

 

 

 

 

5/8" – 1"

800

600

 

 

 

 

Figure 17. Drill bit speed chart.

 

 

 

 

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Figure 18. Belt configuration and speed settings.

-22-

G1005Z Mill/Drill

Page 24
Image 24
Grizzly G1005Z owner manual Drill bit speed chart