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DRILLS
DRILLS
339
www.kyocera-sgstool.com
FRACTIONAL
6 Flute Countersink
Series
606
Fractional
Hardness
Vc
(sfm)
Diameter (D
1
)
(inch)
1/8
3/16
1/4
3/8
1/2
3/4
1
N
ALUMINUM ALLOYS
2017, 2024, 356,
6061, 7075
≤ 80 Bhn
or
≤ 47 HRb
225
RPM 6876
4584
3438
2292
1719
1146
860
(180-270)
Fr
0.0015
0.0022
0.0030
0.0045
0.0060
0.0090
0.0120
Feed (ipm)
10.3
10.3
10.3
10.3
10.3
10.3
10.3
≤ 150 Bhn
or
≤ 7 HRc
190
RPM 5806
3871
2903
1935
1452
968
726
(152-228)
Fr
0.0015
0.0022
0.0030
0.0045
0.0060
0.0090
0.0120
Feed (ipm)
8.7
8.7
8.7
8.7
8.7
8.7
8.7
COPPER ALLOYS
Alum Bronze, C110,
Muntz Brass
≤ 140 Bhn
or
≤ 3 HRc
95
RPM 2903
1935
1452
968
726
484
363
(76-114)
Fr
0.0008
0.0011
0.0015
0.0023
0.0030
0.0045
0.0061
Feed (ipm)
2.2
2.2
2.2
2.2
2.2
2.2
2.2
≤ 200 Bhn
or
≤ 23 HRc
80
RPM 2445
1630
1222
815
611
407
306
(64-96)
Fr
0.0008
0.0012
0.0016
0.0023
0.0031
0.0047
0.0062
Feed (ipm)
1.9
1.9
1.9
1.9
1.9
1.9
1.9
Bhn (Brinell) HRc (Rockwell C) HRb (Rockwell B)
rpm = Vc x 3.82 / D
1
ipm = Fr x rpm
reduce speed and feed for materials harder than listed
refer to the KYOCERA SGS Tool Wizard
®
for complete technical information (www.kyocera-sgstool.com)