Feed Rate per Revolution for Drills:
The Feed rates shown are for average conditions where coolant can be efficiently applied, where the strength of the drill is not a criticall factor and where the workpiece can be rigidly supported. When one or more of these conditions vary, the feed must be adjusted accordingly.
|
|
Feed per Revolution |
|
|
Drill Dia. Range |
Light |
Medium |
Heavy |
|
1/16" - 1/8 |
.0005-.0010 |
.0010-.0020 |
.0020-.0030 |
|
Over 1/8" thru 1/4" |
.0010-.0030 |
.0030-.0050 |
.0050-.0070 |
|
Over 1/4" thru 1/2" |
.0030-.0050 |
.0050-.0070 |
.0070-.0090 |
|
Over 1/2" thru 3/4" |
.0050-.0080 |
.0080-.0110 |
.0110-.0140 |
|
Over 3/4" thru 1" |
.0080-.0110 |
.0110-.0140 |
.0140-.0170 |
|
Over 1" |
.0120-.0150 |
.0150-.0200 |
.0200-.0250 |