Grizzly G0463 User Manual
G0463 Small Mill/Drill
-21-
Setting RPM
Closely follow the proper cutting speed and prop-
er feed to reduce undue strain on all moving parts
and for operator safety.
er feed to reduce undue strain on all moving parts
and for operator safety.
Prior to machining, you need to determine the
RPM needed to cut your workpiece, and then set
the RPM on the machine.
RPM needed to cut your workpiece, and then set
the RPM on the machine.
To determine the needed RPM:
1. Use the table in Figure 15 to determine the
cutting speed required for the material of your
workpiece.
workpiece.
2. Measure the diameter of your cutting tool in
inches.
3. Use the following formula to determine the
needed RPM for your operation:
(Cutting Speed x 4) /Tool Diameter = RPM
Cutting Speeds for High Speed Steel (HSS)
Cutting Tools
Workpiece Material
Cutting Speed (sfm)
Aluminum & alloys
300
Brass & Bronze
150
Copper
100
Cast Iron, soft
80
Cast Iron, hard
50
Mild Steel
90
Cast Steel
80
Alloy Steel, hard
40
Tool Steel
50
Stainless Steel
60
Titanium
50
Plastics
300-800
Wood
300-500
Note:
For carbide cutting tools, double the cut-
ting speed. These values are a guideline only.
Refer to the
Refer to the
MACHINERY'S HANDBOOK for
more detailed information.
Figure 15
Figure 15
. Cutting speed table for HSS cutting
tools.
Failure to follow RPM and Feed Rate
Guidelines may threaten operator safety
from ejected parts or broken tools
.
Failure to follow RPM and Feed Rate
Guidelines will put undue strain on mov-
ing parts, shorten tool life, and create poor
workpiece results.
NOTICE