272 / 396
DRILLS
DRILLS
272
www.kyocera-sgstool.com
Series 131N
3D & 5D
Fractional
Hardness
Vc
(sfm)
Diameter (D
1
)
(inch)
1/8
3/16
1/4
3/8
1/2
5/8
3/4
N
ALUMINUM ALLOYS
< 12% SI
6061, 2024, 7075
≤ 150 Bhn
or
≤ 7 HRc
800
RPM 24448
16299
12224
8149
6112
4890
4075
(640-960)
Fr
0.0055
0.0083
0.0110
0.0166
0.0221
0.0276
0.0331
Feed (ipm)
135
135
135
135
135
135
135
ALUMINUM ALLOYS
> 12% SI
A356.0, 390.0, 319.0
≤ 125 Bhn
or
≤ 77 HRb
600
RPM 18336
12224
9168
6112
4584
3667
3056
(480-720)
Fr
0.0055
0.0082
0.0109
0.0164
0.0218
0.0273
0.0327
Feed (ipm)
100
100
100
100
100
100
100
COPPER ALLOYS
Alum Bronze, Muntz
Brass, Navel Brass
≤ 175 Bhn
or
≤ 16 HRc
550
RPM 16808
11205
8404
5603
4202
3362
2801
(440-660)
Fr
0.0020
0.0030
0.0040
0.0061
0.0081
0.0101
0.0121
Feed (ipm)
34
34
34
34
34
34
34
PLASTICS
Acrylic, PVC,
Polypropylene
450
RPM 13752
9168
6876
4584
3438
2750
2292
(360-540)
Fr
0.0025
0.0037
0.0049
0.0074
0.0099
0.0124
0.0148
Feed (ipm)
34
34
34
34
34
34
34
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)
FRACTIONAL
Hi-PerCarb