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DRILLS
DRILLS
310
www.kyocera-sgstool.com
FRACTIONAL
2 Flute Drills
Series
101
Fractional
Hardness
Vc
(sfm)
Diameter (D
1
)
(inch)
1/64
1/32
1/16
1/8
1/4
3/8
1/2
P
CARBON STEELS
1018, 1040, 1080, 1090,
10L50, 1140, 1212,
12L15, 1525, 1536
≤ 175 Bhn
or
≤ 7 HRc
265
RPM 64787
32394
16197
8098
4049
2699
2025
(212-318)
Fr
0.00021
0.0004
0.0008
0.0017
0.0033
0.0050
0.0067
Feed (ipm)
13.5
13.5
13.5
13.5
13.5
13.5
13.5
≤ 300 Bhn
or
≤ 32 HRc
125
RPM 30560
15280
7640
3820
1910
1273
955
(100-150)
Fr
0.00020
0.0004
0.0008
0.0016
0.0031
0.0047
0.0063
Feed (ipm)
6.0
6.0
6.0
6.0
6.0
6.0
6.0
≤ 425 Bhn
or
≤ 45 HRc
85
RPM 20781
10390
5195
2598
1299
866
649
(68-102)
Fr
0.00011
0.0002
0.0004
0.0008
0.0017
0.0025
0.0034
Feed (ipm)
2.2
2.2
2.2
2.2
2.2
2.2
2.2
ALLOY STEELS
4140, 4150, 4320, 5120,
5150, 8630, 86L20, 50100
≤ 275 Bhn
or
≤ 28 HRc
230
RPM 56230
28115
14058
7029
3514
2343
1757
(184-276)
Fr
0.00019
0.0004
0.0007
0.0015
0.0030
0.0045
0.0060
Feed (ipm)
10.5
10.5
10.5
10.5
10.5
10.5
10.5
≤ 375 Bhn
or
≤ 40 HRc
145
RPM 35450
17725
8862
4431
2216
1477
1108
(116-174)
Fr
0.00019
0.0004
0.0007
0.0015
0.0030
0.0045
0.0060
Feed (ipm)
6.6
6.6
6.6
6.6
6.6
6.6
6.6
≤ 450 Bhn
or
≤ 48 HRc
60
RPM 14669
7334
3667
1834
917
611
458
(48-72)
Fr
0.00008
0.0002
0.0003
0.0007
0.0013
0.0020
0.0026
Feed (ipm)
1.2
1.2
1.2
1.2
1.2
1.2
1.2
H
TOOL STEELS
A2, D2, H13, L2, M2,
P20, S7, T15, W2
≤ 250 Bhn
or
≤ 24 HRc
85
RPM 20781
10390
5195
2598
1299
866
649
(68-102)
Fr
0.00011
0.0002
0.0004
0.0009
0.0018
0.0027
0.0035
Feed (ipm)
2.3
2.3
2.3
2.3
2.3
2.3
2.3
≤ 375 Bhn
or
≤ 40 HRc
55
RPM 13446
6723
3362
1681
840
560
420
(44-66)
Fr
0.00005
0.0001
0.0002
0.0004
0.0008
0.0012
0.0017
Feed (ipm)
0.7
0.7
0.7
0.7
0.7
0.7
0.7
≤ 475 Bhn
or
≤ 50 HRc
40
RPM 9779
4890
2445
1222
611
407
306
(32-48)
Fr
0.00005
0.0001
0.0002
0.0004
0.0008
0.0012
0.0016
Feed (ipm)
0.5
0.5
0.5
0.5
0.5
0.5
0.5
K
CAST IRONS
Gray, Malleable,
Ductile
≤ 220 Bhn
or
≤ 19 HRc
280
RPM 68454
34227
17114
8557
4278
2852
2139
(224-336)
Fr
0.00026
0.0005
0.0010
0.0020
0.0041
0.0061
0.0082
Feed (ipm)
17.5
17.5
17.5
17.5
17.5
17.5
17.5
≤ 330 Bhn
or
≤ 36 HRc
250
RPM 61120
30560
15280
7640
3820
2547
1910
(200-300)
Fr
0.00025
0.0005
0.0010
0.0020
0.0041
0.0061
0.0081
Feed (ipm)
15.5
15.5
15.5
15.5
15.5
15.5
15.5
M
STAINLESS STEELS
(FREE MACHINING)
303, 416, 420F, 430F 440F
≤ 250 Bhn
or
≤ 24 HRc
210
RPM 51341
25670
12835
6418
3209
2139
1604
(168-252)
Fr
0.00015
0.0003
0.0006
0.0012
0.0024
0.0036
0.0048
Feed (ipm)
7.7
7.7
7.7
7.7
7.7
7.7
7.7
≤ 330 Bhn
or
≤ 36 HRc
110
RPM 26893
13446
6723
3362
1681
1121
840
(88-132)
Fr
0.00009
0.0002
0.0004
0.0007
0.0015
0.0022
0.0030
Feed (ipm)
2.5
2.5
2.5
2.5
2.5
2.5
2.5
STAINLESS STEELS
(DIFFICULT)
304, 316, 321, 13-8 PH,
15-5PH, 17-4 PH,
Custom 450
≤ 275 Bhn
or
≤ 28 HRc
65
RPM 15891
7946
3973
1986
993
662
497
(52-78)
Fr
0.00010
0.0002
0.0005
0.0009
0.0018
0.0025
0.0035
Feed (ipm)
1.7
1.7
1.7
1.7
1.7
1.7
1.7
≤ 375 Bhn
or
≤ 40 HRc
55
RPM 13446
6723
3362
1681
840
560
420
(44-66)
Fr
0.00010
0.0002
0.0004
0.0008
0.0015
0.0023
0.0031
Feed (ipm)
1.3
1.3
1.3
1.3
1.3
1.3
1.3
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