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GOmill™ PRO • Square End • 4 Flutes • Plain Shank • Metric

Name: GOmill™ PRO • Square End • 4 Flutes • Plain Shank • Metric
SKU: 7231137
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Solid Carbide End Mill for Roughing and Finishing of Multiple Materials

Material Number7231137

ISO Catalog IDGOPR4SE1200R030HAMANSI Catalog IDGOPR4SE1200R030HAM

GOmill™ PRO General Purpose Solid Carbide End Mills 7231137 - Kennametal

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P Steel
M Stainless Steel
K Cast Iron
N Non-Ferrous
S High-Temp Alloys
H Hardened Materials
Helical Milling
Ramping: Blank
Slotting: Square End
Side Milling/Shoulder Milling: Square End
Shank - Cylindrical Plain
Corner Style: Square End

Overview
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Material Number	7231137
ISO Catalog ID	GOPR4SE1200R030HAM
ANSI Catalog ID	GOPR4SE1200R030HAM
Grade	KCU20
Adapter Style Machine Side	Straight-Cylindrical
[D1] Effective Cutting Diameter	12 mm
[D1] Effective Cutting Diameter	0.4724 in
[D] Adapter / Shank / Bore Diameter	12 mm
[D] Adapter / Shank / Bore Diameter	0.4724 in
[AP1MAX] 1st Maximum Cutting Depth	30 mm
[AP1MAX] 1st Maximum Cutting Depth	1.1811 in
[L3] Usable Length	38 mm
[L3] Usable Length	1.4961 in
[L] Overall Length	83 mm
[L] Overall Length	3.2677 in
[Z] Number of Flutes	4

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Workpiece Materials

Steel
Stainless Steel
Cast Iron
Non-Ferrous
High-Temp Alloys
Hardened Materials

Uses and application

Helical Milling
Ramping: Blank
Slotting: Square End
Side Milling/Shoulder Milling: Square End
Shank - Cylindrical Plain
Corner Style: Square End

Features and benefits

Asymmetric divided flute and variable helix angle for better vibration control and tool life.
Multilayer TiN/TiALN coating for high performance at medium-high cutting on steels, stainless steels and cast iron.
Ideal for shops working in the general engineering, transportation, energy and medical industries.
Designed for side and shoulder milling, helical milling, pocketing, slotting and ramping.

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Application Data

Adjustment factors for speed (Vc) and feed (Fz) • Metric
Ae/D1	2%	4%	5%	8%	10%	12%	20%	30%	40%	50%	100%
Kv	2.1 - 3.6	1.6 - 3	1.6 - 2.5	1.6	1.4	1.38	1.3	1.2	1.1	1	1
KFz	3.58	2.56	2.3	1.84	1.67	1.54	1.25	1.09	1.02	1	0.9
Note: Identify the radial engagement per percentage of the tool diameter (Ae/D1). That column will give you the factor to multiply the Base SMF and Base IPT on the Speed and Feed original table Kv = Factor to multiply the Speed by KFz = Factor to multiply the Feed by
To calculate application specific cutting data, please use Kv coefficient, and KFz from tables for adaption of cutting speeds and feeds respectively: Vc new = Vc * Kv IPT new = IPT * KFz				Sample Calculation Material: P5 D1: 14.0 mm Ae: 20% of D1 Recommended Speed Vc : 80 m/min Recommended Feed Fz: 0.063 mm/th Adjustment coefficient Kv : 1.30 Adjustment coefficient KFz : 1.25				Final cutting data recommendation: Vc new = 80 * 1.30 = 104 m/min Fz new = 0.063 * 1.30 = 0.079 mm/th

GOmill™ PRO • Regular • Recommended Starting Speed and Feed [Metric]

				KCU20			Recommended feed per tooth (fz = mm/th) for side milling (A). For slotting (B), reduce fz by 20%.
	Side Milling		Slotting	Cutting Speed Vc m/min				D1 Diameter
Material Group	ap	ae	ap	Min	Start	Max	mm	2,0	3,0	4,0	5,0	6,0	8,0	10,0	12,0	14,0	16,0	18,0	20,0	25,0
P0	Ap1 Max	0,4 x D1	1,0 x D1	150	175	200	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.101	0.108	0.114	0.124
P1	Ap1 Max	0,4 x D1	1,0 x D1	150	175	200	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.101	0.108	0.114	0.124
P2	Ap1 Max	0,4 x D1	1,0 x D1	140	165	190	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.101	0.108	0.114	0.124
P3	Ap1 Max	0,4 x D1	1,0 x D1	120	140	160	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.087	0.095	0.101	0.114
P4	Ap1 Max	0,4 x D1	0,75 x D1	90	120	150	fz	0.010	0.016	0.021	0.027	0.033	0.045	0.054	0.062	0.070	0.077	0.083	0.088	0.098
P5	Ap1 Max	0,4 x D1	1,0 x D1	60	80	100	fz	0.009	0.014	0.019	0.024	0.029	0.040	0.048	0.056	0.063	0.070	0.076	0.081	0.091
P6	Ap1 Max	0,4 x D1	0,75 x D1	50	63	75	fz	0.008	0.012	0.016	0.020	0.025	0.034	0.040	0.047	0.052	0.057	0.061	0.065	0.071
M1	Ap1 Max	0,4 x D1	1,0 x D1	90	103	115	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.087	0.095	0.101	0.114
M2	Ap1 Max	0,4 x D1	1,0 x D1	60	70	80	fz	0.009	0.014	0.019	0.024	0.029	0.040	0.048	0.056	0.063	0.070	0.076	0.081	0.091
M3	Ap1 Max	0,4 x D1	1,0 x D1	60	65	70	fz	0.008	0.012	0.016	0.020	0.025	0.034	0.040	0.047	0.052	0.057	0.061	0.065	0.071
K1	Ap1 Max	0,4 x D1	1,0 x D1	120	135	150	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.101	0.108	0.114	0.124
K2	Ap1 Max	0,4 x D1	1,0 x D1	110	125	140	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.087	0.095	0.101	0.114
K3	Ap1 Max	0,4 x D1	1,0 x D1	110	120	130	fz	0.009	0.014	0.019	0.024	0.029	0.040	0.048	0.056	0.063	0.070	0.076	0.081	0.091
S1	Ap1 Max	0,4 x D1	0,3 x D1	50	70	90	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.087	0.095	0.101	0.114
S2	Ap1 Max	0,4 x D1	0,3 x D1	25	38	50	fz	0.006	0.009	0.013	0.016	0.019	0.026	0.032	0.037	0.042	0.046	0.050	0.054	0.061
S3	Ap1 Max	0,4 x D1	1,0 x D1	25	33	40	fz	0.006	0.009	0.013	0.016	0.019	0.026	0.032	0.037	0.042	0.046	0.050	0.054	0.061
S4	Ap1 Max	0,4 x D1	1,0 x D1	50	55	60	fz	0.007	0.011	0.016	0.021	0.026	0.037	0.045	0.052	0.058	0.064	0.069	0.074	0.084
H1	Ap1 Max	0,4 x D1	0,75 x D1	80	110	140	fz	0.010	0.016	0.021	0.027	0.033	0.045	0.054	0.062	0.070	0.077	0.083	0.088	0.098
H2	Ap1 Max	0,4 x D1	0,5 x D1	70	95	120	fz	0.008	0.012	0.016	0.020	0.025	0.034	0.040	0.047	0.052	0.057	0.061	0.065	0.071
Lower value of cuting speed is used for high stock removal applications or for higher hardness (machinability) within group. Higher value of cuting speed is used for finishing applications or for lower hardness (machinability) within group. Above parameters are based on ideal conditions. For smaller taper machining centers, please adjust parameters accordiongly on diameters greater than 12mm. For better surface finish reduce feed per tooth. Side and Slotting milling aplications: for longest reach (L3) tools, reduce Ae by 30%. Sharp corner tools not recommended for sloting aplication.

Adjustment factors for speed (Vc) and feed (Fz) • Metric
Ae/D1	2%	4%	5%	8%	10%	12%	20%	30%	40%	50%	100%
Kv	2.1 - 3.6	1.6 - 3	1.6 - 2.5	1.6	1.4	1.38	1.3	1.2	1.1	1	1
KFz	3.58	2.56	2.3	1.84	1.67	1.54	1.25	1.09	1.02	1	0.9
Note: Identify the radial engagement per percentage of the tool diameter (Ae/D1). That column will give you the factor to multiply the Base SMF and Base IPT on the Speed and Feed original table Kv = Factor to multiply the Speed by KFz = Factor to multiply the Feed by
To calculate application specific cutting data, please use Kv coefficient, and KFz from tables for adaption of cutting speeds and feeds respectively: Vc new = Vc * Kv IPT new = IPT * KFz				Sample Calculation Material: P5 D1: 14.0 mm Ae: 20% of D1 Recommended Speed Vc : 80 m/min Recommended Feed Fz: 0.063 mm/th Adjustment coefficient Kv : 1.30 Adjustment coefficient KFz : 1.25				Final cutting data recommendation: Vc new = 80 * 1.30 = 104 m/min Fz new = 0.063 * 1.30 = 0.079 mm/th

GOmill™ PRO • Long • Recommended Starting Speed and Feed [Metric]

			KCU20			Recommended feed per tooth (fz = mm/th) for side milling (A). For slotting (B), reduce fz by 20%.
	Side Milling		Cutting Speed Vc m/min				D1 Diameter
Material Group	ap	ae	Min	Start	Max	mm	2,0	3,0	4,0	5,0	6,0	8,0	10,0	12,0	14,0	18,0	20,0	25,0
P0	Ap1 Max	0.2xD	150	175	200	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.108	0.114	0.124
P1	Ap1 Max	0.2xD	150	175	200	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.108	0.114	0.124
P2	Ap1 Max	0.2xD	140	165	190	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.108	0.114	0.124
P3	Ap1 Max	0.2xD	120	140	160	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.095	0.101	0.114
P4	Ap1 Max	0.2xD	90	120	150	fz	0.010	0.016	0.021	0.027	0.033	0.045	0.054	0.062	0.070	0.083	0.088	0.098
P5	Ap1 Max	0.2xD	60	80	100	fz	0.009	0.014	0.019	0.024	0.029	0.040	0.048	0.056	0.063	0.076	0.081	0.091
P6	Ap1 Max	0.15xD	50	63	75	fz	0.008	0.012	0.016	0.020	0.025	0.034	0.040	0.047	0.052	0.061	0.065	0.071
M1	Ap1 Max	0.2xD	90	103	115	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.095	0.101	0.114
M2	Ap1 Max	0.2xD	60	70	80	fz	0.009	0.014	0.019	0.024	0.029	0.040	0.048	0.056	0.063	0.076	0.081	0.091
M3	Ap1 Max	0.2xD	60	65	70	fz	0.008	0.012	0.016	0.020	0.025	0.034	0.040	0.047	0.052	0.061	0.065	0.071
K1	Ap1 Max	0.2xD	120	135	150	fz	0.014	0.021	0.028	0.036	0.044	0.060	0.072	0.083	0.092	0.108	0.114	0.124
K2	Ap1 Max	0.2xD	110	125	140	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.095	0.101	0.114
K3	Ap1 Max	0.2xD	110	120	130	fz	0.009	0.014	0.019	0.024	0.029	0.040	0.048	0.056	0.063	0.076	0.081	0.091
S1	Ap1 Max	0.1xD	50	70	90	fz	0.011	0.017	0.023	0.030	0.036	0.050	0.061	0.070	0.079	0.095	0.101	0.114
S2	Ap1 Max	0.1xD	25	38	50	fz	0.006	0.009	0.013	0.016	0.019	0.026	0.032	0.037	0.042	0.050	0.054	0.061
S3	Ap1 Max	0.1xD	25	33	40	fz	0.006	0.009	0.013	0.016	0.019	0.026	0.032	0.037	0.042	0.050	0.054	0.061
S4	Ap1 Max	0.15xD	50	55	60	fz	0.007	0.011	0.016	0.021	0.026	0.037	0.045	0.052	0.058	0.069	0.074	0.084
H1	Ap1 Max	0.15xD	80	110	140	fz	0.010	0.016	0.021	0.027	0.033	0.045	0.054	0.062	0.070	0.083	0.088	0.098
H2	Ap1 Max	0.15xD	70	95	120	fz	0.008	0.012	0.016	0.020	0.025	0.034	0.040	0.047	0.052	0.061	0.065	0.071
Lower value of cuting speed is used for high stock removal applications or for higher hardness (machinability) within group. Higher value of cuting speed is used for finishing applications or for lower hardness (machinability) within group. Above parameters are based on ideal conditions. For smaller taper machining centers, please adjust parameters accordiongly on diameters greater than 12mm. For better surface finish reduce feed per tooth. Side milling aplications: for longest reach (L3) tools, reduce Ae by 30%. Sharp corner tools not recommended for sloting aplication.

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TechnicalInfo

Angle of engagement (phi°) relative to cutting width (Ae)
ae	2%	4%	5%	8%	10%	12%	20%	30%	40%	50%	100%
phi - angle of engagement	16.26	23.07	25.84	32.86	36.87	40.54	53.13	66.42	78.46	90.00	180.00

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1014181

100DA125M

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1014601

75TG120M

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1014815

150TG120M

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1025842

20ER120M

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1025843

20ER130M

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1080545

100TGC120M

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1080560

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1086674

75TGCHP120M

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1092182

100DAC120M

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1092290

180DAC120M

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GOmill™ PRO • Square End • 4 Flutes • Plain Shank • Metric