Speed & Feed Data for High Speed End Mills
Starting Point Speed & Feed Ranges

Peripheral Machining

Axial Depth (A.D.) = Dia. X 1.5 Max.

Radial Depth (R.D.) Ratio	Surface Feet per Minute (S.F.P.M.)
	Finishing End Mill			Roughing End Mill
	STD.	TiN.	TiCN.	STD.	TiN.	TiCN.
DIA./16	240	276	312	288	346	403
DIA./8	185	213	241	222	266	311
DIA./4	165	190	215	198	238	277
DIA./2	145	167	189	174	209	244

Feed per Tooth (F.P.T.) by Diameter Note: Increase F.P.T. by 25% to 35% for 60 Degree end mills Note: Increase F.P.T. by 25% for TiCN coating.
1/4"	3/8"	1/2"	5/8"	3/4"	7/8"	1." & Up
.0018	.0026	.0035	.0044	.0053	.0061	.0070
.0015	.0023	.0030	.0038	.0045	.0053	.0060
.0013	.0019	.0025	.0031	.0038	.0044	.0050
.0010	.0015	.0020	.0025	.0030	.0035	.0040

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Slot Machining

Radial Depth (R.D.) = Tool Dia.

Axial Depth (A.D.) Ratio	Surface Feet per Minute (S.F.P.M.)
	Finishing End Mill			Roughing End Mill
	STD.	TiN.	TiCN.	STD.	TiN.	TiCN.
DIA./8	145	167	189	174	209	244
DIA./4	135	155	176	162	194	227
DIA./2	125	144	163	150	180	210
DIA./1	100	115	130	120	144	168

Feed per Tooth (F.P.T.) by Diameter Note: Increase F.P.T. by 25% to 35% for 60 Degree end mills Note: Increase F.P.T. by 25% for TiCN coating.
1/4"	3/8"	1/2"	5/8"	3/4"	7/8"	1." & Up
.0015	.0023	.0030	.0038	.0045	.0053	.0060
.0013	.0019	.0025	.0031	.0038	.0044	.0050
.0010	.0015	.0020	.0025	.0030	.0035	.0040
.0008	.0011	.0015	.0019	.0023	.0026	.0030