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DRILLS
DRILLS
337
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
P
CARBON STEELS
1018, 1040, 1080, 1090,
10L50, 1140, 1212,
12L15, 1525, 1536
≤ 175 Bhn
or
≤ 7 HRc
125
RPM 3820
2547
1910
1273
955
637
478
(100-150)
Fr
0.0010
0.0016
0.0021
0.0031
0.0042
0.0063
0.0084
Feed (ipm)
4.0
4.0
4.0
4.0
4.0
4.0
4.0
≤ 300 Bhn
or
≤ 32 HRc
60
RPM 1834
1222
917
611
458
306
229
(48-72)
Fr
0.0010
0.0015
0.0020
0.0029
0.0039
0.0059
0.0079
Feed (ipm)
1.8
1.8
1.8
1.8
1.8
1.8
1.8
≤ 425 Bhn
or
≤ 45 HRc
45
RPM 1375
917
688
458
344
229
172
(36-54)
Fr
0.0006
0.0009
0.0012
0.0017
0.0023
0.0035
0.0047
Feed (ipm)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
ALLOY STEELS
4140, 4150, 4320, 5120,
5150, 8630, 86L20, 50100
≤ 275 Bhn
or
≤ 28 HRc
95
RPM 2903
1935
1452
968
726
484
363
(76-114)
Fr
0.0009
0.0013
0.0018
0.0027
0.0036
0.0054
0.0072
Feed (ipm)
2.6
2.6
2.6
2.6
2.6
2.6
2.6
≤ 375 Bhn
or
≤ 40 HRc
60
RPM 1834
1222
917
611
458
306
229
(48-72)
Fr
0.0009
0.0014
0.0019
0.0028
0.0037
0.0056
0.0074
Feed (ipm)
1.7
1.7
1.7
1.7
1.7
1.7
1.7
≤ 450 Bhn
or
≤ 48 HRc
35
RPM 1070
713
535
357
267
178
134
(28-42)
Fr
0.0006
0.0008
0.0011
0.0017
0.0022
0.0034
0.0045
Feed (ipm)
0.6
0.6
0.6
0.6
0.6
0.6
0.6
H
TOOL STEELS
A2, D2, H13, L2, M2,
P20, S7, T15, W2
≤ 250 Bhn
or
≤ 24 HRc
35
RPM 1070
713
535
357
267
178
134
(28-42)
Fr
0.0006
0.0008
0.0011
0.0017
0.0022
0.0034
0.0045
Feed (ipm)
0.6
0.6
0.6
0.6
0.6
0.6
0.6
≤ 375 Bhn
or
≤ 40 HRc
25
RPM 764
509
382
255
191
127
96
(20-30)
Fr
0.0003
0.0004
0.0005
0.0008
0.0010
0.0016
0.0021
Feed (ipm)
0.2
0.2
0.2
0.2
0.2
0.2
0.2
≤ 475 Bhn
or
≤ 50 HRc
20
RPM 611
407
306
204
153
102
76
(16-24)
Fr
0.0003
0.0005
0.0007
0.0010
0.0013
0.0020
0.0026
Feed (ipm)
0.2
0.2
0.2
0.2
0.2
0.2
0.2
K
CAST IRONS
Gray, Malleable,
Ductile
≤ 220 Bhn
or
≤ 19 HRc
105
RPM 3209
2139
1604
1070
802
535
401
(84-126)
Fr
0.0012
0.0018
0.0024
0.0036
0.0049
0.0073
0.0097
Feed (ipm)
3.9
3.9
3.9
3.9
3.9
3.9
3.9
≤ 330 Bhn
or
≤ 36 HRc
75
RPM 2292
1528
1146
764
573
382
287
(60-90)
Fr
0.0012
0.0018
0.0024
0.0037
0.0049
0.0073
0.0098
Feed (ipm)
2.8
2.8
2.8
2.8
2.8
2.8
2.8
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