Drilling Speed
Using the Drill Bit Speed Chart
6alVnh [daadl i]Z bVcj[VXijgZgh heZZY gZXdb" bZcYVi^dch ^[ egdk^YZY l^i] ndjg Yg^aa W^ih! Xji" iZgh!dg]daZhVlh#:mXZZY^c\i]ZgZXdbbZcYZY heZZYhbVnWZYVc\Zgdjhidi]ZdeZgVidg#
I]Z X]Vgi h]dlc ^c Figure 24 ^h ^ciZcYZY Vh V \j^YZ dcan# I]Z dei^bjb heZZY l^aa ValVnh YZeZcY dc kVg^djh [VXidgh! ^cXajY^c\ idda Y^Vb" ZiZg!Yg^aa^c\egZhhjgZ!bViZg^Va]VgYcZhh!bViZg^Va fjVa^in!VcYYZh^gZY[^c^h]#
D[iZc! l]Zc Yg^aa^c\ bViZg^Vah di]Zg i]Vc lddY! hdbZineZd[ajWg^XVi^dc^hcZXZhhVgn#
Lubrication Suggestions
LddY###########################################################CdcZ
EaVhi^Xh############################################HdVenLViZg 7gVhh###############################LViZg"7VhZYAjWg^XVci 6ajb^cjb##################### EVgV[[^c"7VhZYAjWg^XVci B^aYHiZZa############################# D^a"7VhZYAjWg^XVci
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.
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 |
|
|
|
|
1000 | 750 |
|
|
|
| |
500 | 350 |
|
|
|
| |
Hole Saws | Soft Wood | Hard Wood | Plastic Brass | Aluminum | Mild Steel | |
1/2" – 7/8" | 500 | 500 | 600 | 600 | 600 | 500 |
1" – | 400 | 400 | 500 | 500 | 500 | 400 |
2" – | 300 | 300 | 400 | 400 | 400 | 300 |
3" – | 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 |
|
|
|
|
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 24. 9g^aaW^iheZZYX]Vgi#
<%*&.B^aa$9g^aa$IVee^c\BVX]^cZ | "'(" |