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FRACTIONAL
Series 33
Series
33CR
Fractional
Hardness
Ap
Ae
Ae
Vc
(sfm)
Diameter (D
1
)
(inch)
Ae x D
1
Ap x D
1
1/8
1/4
3/8
1/2
5/8
3/4
1
P
CARBON STEELS
1018, 1040, 1080,
1090, 10L50, 1140,
1212, 12L15, 1525,
1536
≤ 275 Bhn
or
≤ 28 HRc
Profile
≤ 0.5
≤ 1.5
550
RPM 16808
8404
5603
4202
3362
2801
2101
(440-660)
Fz
0.0005 0.0012 0.0023 0.0031 0.0039 0.0040 0.0043
Feed (ipm)
25.2
30.3
38.7
39.1
39.3
33.6
27.1
Slot
1
≤ 1
440
RPM 13446
6723
4482
3362
2689
2241
1681
(352-528)
Fz
0.0005 0.0012 0.0023 0.0031 0.0039 0.0040 0.0043
Feed (ipm)
20.2
24.2
30.9
31.3
31.5
26.9
21.7
ALLOY STEELS
4140, 4150, 4320,
5120, 5150, 8630,
86L20, 50100
≤ 375 Bhn
or
≤ 40 HRc
Profile
≤ 0.5
≤ 1.5
315
RPM 9626
4813
3209
2407
1925
1604
1203
(252-378)
Fz
0.0004 0.0009 0.0017 0.0023 0.0029 0.0030 0.0032
Feed (ipm)
11.6
13.0
16.4
16.6
16.7
14.4
11.6
Slot
1
≤ 1
250
RPM 7640
3820
2547
1910
1528
1273
955
(200-300)
Fz
0.0004 0.0009 0.0017 0.0023 0.0029 0.0030 0.0032
Feed (ipm)
9.2
10.3
13.0
13.2
13.3
11.5
9.2
H
TOOL STEELS
A2, D2, H13, L2, M2,
P20, S7, T15, W2
≤ 375 Bhn
or
≤ 40 HRc
Profile
≤ 0.5
≤ 1.5
185
RPM 5654
2827
1885
1413
1131
942
707
(148-222)
Fz
0.0003 0.0007 0.0014 0.0018 0.0023 0.0024 0.0025
Feed (ipm)
5.1
5.9
7.9
7.6
7.8
6.8
5.3
Slot
1
≤ 1
145
RPM 4431
2216
1477
1108
886
739
554
(116-174)
Fz
0.0003 0.0007 0.0014 0.0018 0.0023 0.0024 0.0025
Feed (ipm)
4.0
4.7
6.2
6.0
6.1
5.3
4.2
K
CAST IRONS
(LOW & MEDIUM
ALLOY)
Gray, Malleable,
Ductile
≤ 220 Bhn
or
≤ 19 HRc
Profile
≤ 0.5
≤ 1.5
445
RPM 13599
6800
4533
3400
2720
2267
1700
(356-534)
Fz
0.0004 0.0011 0.0021 0.0028 0.0035 0.0036 0.0039
Feed (ipm)
14.3
22.4
28.6
28.6
28.6
24.5
19.9
Slot
1
≤ 1
355
RPM 10849
5424
3616
2712
2170
1808
1356
(284-426)
Fz
0.0004 0.0011 0.0021 0.0028 0.0035 0.0036 0.0039
Feed (ipm)
11.4
17.9
22.8
22.8
22.8
19.5
15.9
CAST IRONS
(HIGH ALLOY)
Gray, Malleable,
Ductile
≤ 260 Bhn
or
≤ 26 HRc
Profile
≤ 0.5
≤ 1.5
340
RPM 10390
5195
3463
2598
2078
1732
1299
(272-408)
Fz
0.0003 0.0008 0.0016 0.0021 0.0026 0.0027 0.0029
Feed (ipm)
9.4
12.5
16.6
16.4
16.2
14.0
11.3
Slot
1
≤ 1
270
RPM 8251
4126
2750
2063
1650
1375
1031
(216-324)
Fz
0.0003 0.0008 0.0016 0.0021 0.0026 0.0027 0.0029
Feed (ipm)
7.4
9.9
13.2
13.0
12.9
11.1
9.0
M
STAINLESS STEELS
(FREE MACHINING)
303, 416, 420F,
430F, 440F
≤ 275 Bhn
or
≤ 28 HRc
Profile
≤ 0.5
≤ 1.5
490
RPM 14974
7487
4991
3744
2995
2496
1872
(392-588)
Fz
0.0004 0.0010 0.0019 0.0025 0.0031 0.0032 0.0035
Feed (ipm)
17.1
22.5
28.5
28.1
27.9
24.0
19.7
Slot
1
≤ 1
390
RPM 11918
5959
3973
2980
2384
1986
1490
(312-468)
Fz
0.0004 0.0010 0.0019 0.0025 0.0031 0.0032 0.0035
Feed (ipm)
13.6
17.9
22.6
22.3
22.2
19.1
15.6
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