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FRACTIONAL
Single End Roughers (Coarse Pitch)
Series
61
Fractional
Hardness
Ap
Ae
Ae
Vc
(sfm)
Diameter (D
1
)
(inch)
Ae x D
1
Ap x D
1
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
Profile
≤ 0.5
≤ 1.5
500
RPM 7640
5093
3820
2547
1910
(400-600)
Fz
0.0006
0.0011
0.0014
0.0017
0.0020
Feed (ipm)
13.8
16.8
21.4
17.3
19.1
Slot
1
≤ 1
400
RPM 6112
4075
3056
2037
1528
(320-480)
Fz
0.0006
0.0011
0.0014
0.0017
0.0020
Feed (ipm)
11.0
13.4
17.1
13.9
15.3
ALLOY STEELS
4140, 4150, 4320,
5120, 5150, 8630,
86L20, 50100
≤ 275 Bhn
or
≤ 28 HR
Profile
≤ 0.5
≤ 1.5
365
RPM 5577
3718
2789
1859
1394
(292-438)
Fz
0.0004
0.0008
0.0011
0.0013
0.0015
Feed (ipm)
6.7
8.9
12.3
9.7
10.5
Slot
1
≤ 1
295
RPM 4508
3005
2254
1503
1127
(236-354)
Fz
0.0004
0.0008
0.0011
0.0013
0.0015
Feed (ipm)
5.4
7.2
9.9
7.8
8.5
H
TOOL STEELS
A2, D2, H13, L2, M2,
P20, S7, T15, W2
≤ 250 Bhn
or
≤ 24 HRc
Profile
≤ 0.5
≤ 1.5
345
RPM 5272
3514
2636
1757
1318
(276-414)
Fz
0.0006
0.0009
0.0015
0.0018
0.0021
Feed (ipm)
9.5
9.5
15.8
12.7
13.8
Slot
1
≤ 1
275
RPM 4202
2801
2101
1401
1051
(220-330)
Fz
0.0006
0.0009
0.0015
0.0018
0.0021
Feed (ipm)
7.6
7.6
12.6
10.1
11.0
K
CAST IRONS
Gray, Malleable,
Ductile
≤ 220 Bhn
or
≤ 19 HRc
Profile
≤ 0.5
≤ 1.5
365
RPM 5577
3718
2789
1859
1394
(292-438)
Fz
0.0008
0.0015
0.0020
0.0024
0.0028
Feed (ipm)
13.4
16.7
22.3
17.8
19.5
Slot
1
≤ 1
295
RPM 4508
3005
2254
1503
1127
(236-354)
Fz
0.0008
0.0015
0.0020
0.0024
0.0028
Feed (ipm)
10.8
13.5
18.0
14.4
15.8
Bhn (Brinell) HRc (Rockwell C)
rpm = (Vc x 3.82) / D
1
ipm = Fz x number of flutes 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)