Page 799 - Master Catalog 2017, Inch

Face Mills • M640 Series
Recommended Starting Speeds

(Recommended Starting Speeds [SFM] — continued)

Material TN6501 THM-U THM
Group
Face Mills
1 – – – – – – – – –
2 – – – – – – – – –
3 – – – – – – – – –
P
4 – – – – – – – – –
5 – – – – – – – – –
6 – – – – – – – – –
1 – – – – – – – – –
M 2 – – – – – – – – –
3 – – – – – – – – –
1 – – – 750 670 590 475 355 295
K 2 – – – – – – 490 395 275
3 – – – – – – 510 370 235
1 7870 4720 3935 7870 4720 3935 3540 2365 1970
N 2 5370 3210 2615 5370 3210 2615 2695 1830 1520
3 3150 1970 1570 3150 1970 1570 1770 1105 785
1 – – – – – – – – –
2 – – – – – – – – –
S
3 – – – – – – – – –
4 – – – – – – – – –
1 – – – – – – – – –
H 2 – – – – – – – – –
3 – – – – – – – – –
NOTE: FIRST choice starting speeds are in bold type.
As the average chip thickness increases, the speed should be decreased.

Recommended Starting Feeds

„ Recommended Starting Feeds [IPT] Light General Heavy

Machining Purpose Machining
Programmed Feed per Tooth (fz)
as a % of Radial Depth of Cut (ae)
Insert Insert
Geometry 5% 10% 20% 30% 40–100% Geometry
.F..LDAL .005 .013 .018 .004 .010 .013 .003 .007 .010 .003 .006 .009 .002 .006 .008 .F..LDAL
.E..LD .005 .013 .018 .004 .010 .013 .003 .007 .010 .003 .006 .009 .002 .006 .008 .E..LD
.E..GD .005 .019 .021 .004 .014 .015 .003 .010 .011 .003 .009 .010 .002 .008 .009 .E..GD
NOTE: Use “Light Machining” value as starting feed rate.

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