Selecting Spindle Rpm - Grizzly G0756 Owner's Manual

Selecting Spindle
RPM
use the proper spindle speed and feed rate to
reduce strain on all moving parts and decrease
risk of operator injury.
prior to drilling, determine the rpM needed for
workpiece material then set the spindle speed to
the closest available rpM.
To determine the needed RPM:
1. use the table in figure 22 to determine the
speed required for your workpiece material.
Twist/Brad Point Drill Bits
1/16" – 3/16"
13/64" – 3/8"
25/64" – 5/8"
11/16" – 1"
Spade/Forstner Bits
1/4" – 1/2"
9/16" – 1"
1-1/8" – 1-7/8"
2–3"
Hole Saws
1/2" – 7/8"
1" – 1-7/8"
2" – 2-7/8"
3" – 3-7/8"
4" – 5"
Rosette Cutters
Carbide Insert Type
One-Piece Type
Tenon/Plug Cutters
3/8" – 1/2"
5/8" – 1"
Model G0756 (Mfg. Since 2/13)
Soft Wood Hard Wood
3000
2000
1500
750
Soft Wood Hard Wood
2000
1500
1000
500
Soft Wood Hard Wood
500
400
300
200
100
Soft Wood Hard Wood
350
1800
Soft Wood Hard Wood
1200
800
figure 22. Cutting speed table for hss cutting tools.
Note: For carbide cutting tools, double the cut-
ting speed. These values are a guideline only.
Refer to the MACHINERY'S HANDBOOK for
more detailed information.
Larger bits turning at slower speeds tend
to grab the workpiece aggressively. This
can result in the operator's hand being
pulled into the bit or the workpiece being
thrown with great force. Always clamp the
workpiece to the table to prevent injuries.
Plastic Brass
2500 2500 2500
1500 2000 1250
750 1500 750
500 1000 400
Plastic Brass
1500
1250
750
350
Plastic Brass
500 600 600
400 500 500
300 400 400
200 300 300
100 200 200
Plastic Brass
250
500
Plastic Brass
1000
600
Aluminum Mild Steel
3000 2500
2500 1250
1500 600
1000 350
Aluminum Mild Steel
Aluminum Mild Steel
600 500
500 400
400 300
300 200
200 100
Aluminum Mild Steel
Aluminum Mild Steel
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