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DRILLS
DRILLS
Series
141K 5D
Metric
Hardness
Vc
(m/min)
Diameter (D
1
)
(mm)
3
6
8
10
12
14
16
K
GRAY CAST IRON
FERRITIC
ASTM A48: CLASS 20
SAE J431C: GRADE 1800
≤ 150 Bhn
or
≤ 80 HRb
137
RPM 14541
7271
5453
4362
3635
3116
2726
(110-165)
Fr
0.119
0.237
0.316
0.395
0.475
0.554
0.633
Feed (mm/min)
1725
1725
1725
1725
1725
1725
1725
GRAY CAST IRON
PEARLITIC
ASTM A48: CLASS 30, 35, 40
SAE J431C: GRADE 3000
≤ 220 Bhn
or
≤ 19 HRc
114
RPM 12118
6059
4544
3635
3029
2597
2272
(91-137)
Fr
0.094
0.189
0.252
0.315
0.378
0.441
0.504
Feed (mm/min)
1145
1145
1145
1145
1145
1145
1145
COMPACTED
GRAPHITE IRON
≤ 250 Bhn
or
≤ 25 HRc
99
RPM 10502
5251
3938
3151
2626
2250
1969
(79-119)
Fr
0.094
0.189
0.251
0.314
0.377
0.440
0.503
Feed (mm/min)
990
990
990
990
990
990
990
MALLEABLE CAST IRON
FERRITIC
ASTM A220: GRADE 40010
SAE J158: GRADE M4504
≤ 160 Bhn
or
≤ 3 HRc
137
RPM 14541
7271
5453
4362
3635
3116
2726
(110-165)
Fr
0.119
0.237
0.316
0.395
0.475
0.554
0.633
Feed (mm/min)
1725
1725
1725
1725
1725
1725
1725
MALLEABLE CAST IRON
MARTENSITE
ASTM A220: GRADE 90001
SAE J158: GRADE M8501
≤ 320 Bhn
or
≤ 34 HRc
76
RPM 8078
4039
3029
2424
2020
1731
1515
(61-91)
Fr
0.076
0.151
0.201
0.252
0.302
0.352
0.403
Feed (mm/min)
610
610
610
610
610
610
610
(Brinell) HRc (Rockwell C) HRb (Rockwell B)
rpm = (Vc x 1000) / (D
1
x 3.14)
mm/min = 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)
279
www.kyocera-sgstool.com
METRIC
Hi-PerCarb