drill bit speed chart.pdf

(18 KB) Pobierz
Drill Bit Speed Chart (Page 1)
Australian
DRILL BIT SPEED CHART
Operating speeds (RPM)
Accessory
Softwood Hardwood
Acrylic
Brass
Aluminium
Steel
Shop Notes
Twist drill bits*
1mm - 5mm
3000
3000
2500
3000
3000
3000
Lubricate when cutting
6mm - 10mm
3000
1500
2000
1200
2500
1000
steel. Use centre punch
11mm - 16mm
1500
750
1500
750
1500
600
on all holes to prevent drill
17mm - 25mm
750
500
NR
400
1000
350
from wandering.
Brad point bits*
3mm
1800
1200
1500
Raise smaller bits often
6mm
1800
1000
1500
to clear shavings
10mm
1800
750
1500
and prevent heat buildup.
13mm
1800
750
1000
16mm
1800
500
750
Forstner bits
6mm - 9mm
2400
700
NR
Raise smaller bits often to
12mm - 16mm
2400
500
250
clear shavings and prevent
20mm - 25mm
1500
500
250
heat buildup.Make several
28mm - 32mm
1000
250
250
shallow passes with larger
35mm - 50mm
500
250
NR
bits. Allow to cool between
passes.
Sawtooth bits
54mm - 100mm
250
250
NR
Use Forstner speeds with
smaller bits.
Spade bits*
6mm - 12mm
2000
1500
NR
NR
NR
NR
Clamp work to table to
16mm - 25mm
1750
1500
NR
NR
NR
NR
improve quality of hole.
32mm - 38mm
1500
1000
NR
NR
NR
NR
Spade bits with spurs
9mm - 25mm
2000
1800
500
NR
NR
NR
Best bit for acrylic.
Clamp work securely.
Hole saws*
25mm - 38mm
500
350
NR
250
250
250
Do not use with brass or
40mm - 51mm
500
250
NR
150
250
100
aluminium thicker than
54mm - 64mm
250-500
100
NR
150
250
100
1.5mm. Avoid dense
75mm - 100mm
100
NR
NR
100
100
100
hardwoods.
Countersinks
2-flute
1400
1400
NR
NR
NR
NR
Raise and lower frequently
5-flute
1000
750
750
250
250
250
for quicker cutting.
Plug cutters
All sizes
1000
500
Cut to full depth.
Circle cutters
38mm - 75mm
500
250
250
Drill one side,then flip
80mm - 150mm
250
250
250
material over to finish cut.
This chart should be used as a guide and supplementary only to the speeds recommended by your
drill press manufacturer and the bits etc. that you are using.
Notes:
• Always wear a face shield for optimum protection.
• Reduce speed when drilling into end grain.
• Drilling faster than recommended can cause overheating.
• Speeds slower than those recommended may cause poor-quality holes.
NR = Not Recommended with this material
*Backup material to prevent chipout
© 2003 Media Properties Australia
281238745.001.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin