LATHELAND® torus end mill with recess, 4 flutes, AlCrN coated

LATHELAND® torus end mill with recess – dimension drawing (D, R, l1, l2, L, d2)

LATHELAND

LATHELAND® Torus End Mill with Recess, 4 Flutes

In stock

SKU: LL-CR4-3R0.3x50

£24.39 GBP

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4-flute torus (corner radius) end mill for general engineering.

Specifications

Material	Solid carbide
Coating	AlCrN (hardness 3,200 HV, oxidation resistance up to 1,100 °C)
Flutes	4
Helix angle	40°
Shank tolerance	h6
Workpiece hardness	up to 45 HRC
Sizes available	33

Features

Differential pitch to reduce chatter
40° helix
Recessed neck for clearance in deeper cuts
For workpieces up to 45 HRC

Size table (all dimensions in mm)

SKU	Ø D	R	l1 cutting	l2 recess	L overall	d2 shank
LL-CR4-3R0.3x50	3	0.3	9	15	50	3
LL-CR4-3R0.3x57	3	0.3	9	15	57	6
LL-CR4-3R0.5x50	3	0.5	9	15	50	3
LL-CR4-3R0.5x57	3	0.5	9	15	57	6
LL-CR4-4R0.3x50	4	0.3	12	20	50	4
LL-CR4-4R0.3x57	4	0.3	12	20	57	6
LL-CR4-4R0.5x50	4	0.5	12	20	50	4
LL-CR4-4R0.5x57	4	0.5	12	20	57	6
LL-CR4-5R0.3x50	5	0.3	15	22	50	5
LL-CR4-5R0.3x57	5	0.3	15	22	57	6
LL-CR4-5R0.5x50	5	0.5	15	22	50	5
LL-CR4-5R0.5x57	5	0.5	15	22	57	6
LL-CR4-6R0.3x57	6	0.3	16	22	57	6
LL-CR4-6R0.5x57	6	0.5	16	22	57	6
LL-CR4-6R1x57	6	1	16	22	57	6
LL-CR4-8R0.3x64	8	0.3	20	26	64	8
LL-CR4-8R0.5x64	8	0.5	20	26	64	8
LL-CR4-8R1x64	8	1	20	26	64	8
LL-CR4-8R2x64	8	2	20	26	64	8
LL-CR4-10R0.5x70	10	0.5	22	30	70	10
LL-CR4-10R1x70	10	1	22	30	70	10
LL-CR4-10R2x70	10	2	22	30	70	10
LL-CR4-12R0.5x83	12	0.5	25	35	83	12
LL-CR4-12R1x83	12	1	25	35	83	12
LL-CR4-12R2x83	12	2	25	35	83	12
LL-CR4-16R0.5x90	16	0.5	32	42	90	16
LL-CR4-16R1x90	16	1	32	42	90	16
LL-CR4-16R2x90	16	2	32	42	90	16
LL-CR4-16R3x90	16	3	32	42	90	16
LL-CR4-20R0.5x100	20	0.5	38	50	100	20
LL-CR4-20R1x100	20	1	38	50	100	20
LL-CR4-20R2x100	20	2	38	50	100	20
LL-CR4-20R3x100	20	3	38	50	100	20

Recommended cutting data

Starting values for stable conditions with good coolant supply. Adjust for your machine, set-up and workholding. For diameters between the listed values, interpolate between the neighbouring rows.
Spindle speed n = Vc × 1000 / (π × D) · Feed rate vf = n × fz × z (drills: vf = n × fn).

Ramping / helical

Workpiece material	Carbon steel	Alloy steel 520–1200 N/mm²	Prehardened steel 35–45 HRC	Stainless steel high machinability	Stainless steel low machinability	Grey cast iron	Ductile cast iron	Wrought aluminium Si < 9%	Cast aluminium Si ≥ 9%	Copper alloy	Titanium alloy	Nickel alloy
ISO group	P01	P02	P03	M01	M02	K01	K02	N01	N02	N03	S01	S02
Ramping depth	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D
Ramping angle	5°	5°	3°	3°	2°	5°	3°	10°	10°	8°	2°	1°
Vc (m/min)	150	120	110	90	60	130	80	250	220	210	45	20
Ø D (mm)	fz (mm/tooth)
1	0.002	0.002	0.002	0.002	0.002	0.002	0.002	0.004	0.003	0.003	0.003	0.003
2	0.005	0.005	0.005	0.005	0.006	0.005	0.005	0.005	0.005	0.005	0.007	0.007
3	0.007	0.007	0.007	0.008	0.009	0.007	0.007	0.010	0.008	0.008	0.011	0.011
4	0.010	0.010	0.010	0.011	0.013	0.010	0.010	0.013	0.012	0.012	0.015	0.015
5	0.013	0.013	0.013	0.014	0.016	0.013	0.014	0.017	0.016	0.016	0.019	0.019
6	0.015	0.015	0.015	0.018	0.020	0.015	0.017	0.021	0.021	0.021	0.024	0.024
8	0.021	0.021	0.021	0.024	0.027	0.021	0.022	0.030	0.029	0.030	0.032	0.032
10	0.026	0.027	0.026	0.030	0.035	0.026	0.028	0.038	0.038	0.040	0.041	0.041
12	0.033	0.033	0.033	0.038	0.043	0.033	0.034	0.048	0.049	0.050	0.050	0.050
14	0.038	0.038	0.038	0.043	0.050	0.038	0.039	0.054	0.056	0.057	0.058	0.058
16	0.043	0.042	0.043	0.049	0.055	0.043	0.044	0.060	0.062	0.064	0.064	0.064
18	0.048	0.046	0.048	0.054	0.061	0.048	0.049	0.066	0.064	0.070	0.070	0.070
20	0.053	0.051	0.053	0.058	0.066	0.053	0.054	0.072	0.069	0.077	0.077	0.077

Slotting

Workpiece material	Carbon steel	Alloy steel 520–1200 N/mm²	Prehardened steel 35–45 HRC	Stainless steel high machinability	Stainless steel low machinability	Grey cast iron	Ductile cast iron	Wrought aluminium Si < 9%	Cast aluminium Si ≥ 9%	Copper alloy	Titanium alloy	Nickel alloy
ISO group	P01	P02	P03	M01	M02	K01	K02	N01	N02	N03	S01	S02
Ap – depth of cut	1.00 × D	1.00 × D	0.80 × D	0.80 × D	0.40 × D	1.00 × D	0.80 × D	1.00 × D	1.00 × D	1.00 × D	0.40 × D	0.30 × D
Ae – width of cut	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D
Vc (m/min)	200	160	150	120	80	170	110	330	300	280	60	30
Ø D (mm)	fz (mm/tooth)
1	0.003	0.003	0.003	0.003	0.003	0.003	0.003	0.005	0.004	0.004	0.004	0.004
2	0.006	0.006	0.006	0.006	0.007	0.006	0.006	0.007	0.006	0.006	0.009	0.009
3	0.009	0.009	0.009	0.010	0.011	0.009	0.009	0.011	0.010	0.010	0.014	0.014
4	0.012	0.012	0.012	0.014	0.016	0.012	0.013	0.016	0.015	0.015	0.019	0.019
5	0.016	0.016	0.016	0.018	0.020	0.016	0.017	0.021	0.020	0.020	0.024	0.024
6	0.019	0.019	0.019	0.022	0.025	0.019	0.021	0.026	0.026	0.026	0.030	0.030
8	0.026	0.026	0.026	0.030	0.034	0.026	0.028	0.037	0.036	0.038	0.040	0.040
10	0.033	0.034	0.033	0.038	0.044	0.033	0.035	0.048	0.047	0.050	0.051	0.051
12	0.041	0.041	0.041	0.047	0.054	0.041	0.043	0.060	0.061	0.062	0.063	0.063
14	0.047	0.047	0.047	0.054	0.062	0.047	0.049	0.068	0.070	0.071	0.072	0.072
16	0.054	0.053	0.054	0.061	0.069	0.054	0.055	0.075	0.078	0.080	0.080	0.080
18	0.060	0.058	0.060	0.067	0.076	0.060	0.061	0.083	0.080	0.088	0.088	0.088
20	0.066	0.064	0.066	0.073	0.082	0.066	0.067	0.090	0.086	0.096	0.096	0.096

Side milling

Workpiece material	Carbon steel	Alloy steel 520–1200 N/mm²	Prehardened steel 35–45 HRC	Stainless steel high machinability	Stainless steel low machinability	Grey cast iron	Ductile cast iron	Wrought aluminium Si < 9%	Cast aluminium Si ≥ 9%	Copper alloy	Titanium alloy	Nickel alloy
ISO group	P01	P02	P03	M01	M02	K01	K02	N01	N02	N03	S01	S02
Ap – depth of cut	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D
Ae – width of cut	0.25 × D	0.20 × D	0.18 × D	0.18 × D	0.15 × D	0.25 × D	0.18 × D	0.30 × D	0.30 × D	0.30 × D	0.15 × D	0.10 × D
Vc (m/min)	280	230	190	160	100	250	140	400	380	360	70	40
Ø D (mm)	fz (mm/tooth)
1	0.005	0.006	0.005	0.004	0.005	0.007	0.004	0.006	0.005	0.004	0.005	0.004
2	0.009	0.009	0.009	0.009	0.011	0.010	0.009	0.009	0.008	0.009	0.011	0.008
3	0.017	0.014	0.014	0.014	0.017	0.016	0.014	0.014	0.014	0.014	0.018	0.013
4	0.023	0.020	0.019	0.020	0.024	0.022	0.019	0.020	0.019	0.021	0.024	0.018
5	0.030	0.025	0.024	0.025	0.030	0.029	0.025	0.027	0.026	0.027	0.031	0.025
6	0.036	0.031	0.031	0.031	0.037	0.036	0.030	0.034	0.034	0.035	0.039	0.033
8	0.049	0.043	0.042	0.043	0.049	0.049	0.041	0.046	0.046	0.050	0.053	0.046
10	0.062	0.056	0.056	0.056	0.062	0.063	0.052	0.060	0.059	0.062	0.066	0.061
12	0.075	0.070	0.070	0.070	0.076	0.075	0.069	0.076	0.074	0.076	0.080	0.075
14	0.086	0.079	0.080	0.078	0.085	0.085	0.075	0.087	0.085	0.086	0.090	0.081
16	0.094	0.087	0.090	0.086	0.093	0.095	0.082	0.097	0.095	0.091	0.101	0.089
18	0.103	0.092	0.098	0.092	0.102	0.103	0.089	0.106	0.102	0.099	0.111	0.094
20	0.113	0.098	0.104	0.099	0.107	0.112	0.094	0.115	0.110	0.106	0.122	0.102

Plunging

Workpiece material	Carbon steel	Alloy steel 520–1200 N/mm²	Grey cast iron	Wrought aluminium Si < 9%	Cast aluminium Si ≥ 9%	Copper alloy
ISO group	P01	P02	K01	N01	N02	N03
Ap – depth of cut	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D	1.00 × D
Ae – width of cut	-	-	-	-	-	-
Vc (m/min)	120	110	120	150	140	130
Ø D (mm)	fz (mm/tooth)
1	0.007	0.008	0.007	0.009	0.009	0.008
2	0.018	0.016	0.018	0.018	0.018	0.017
3	0.028	0.024	0.028	0.028	0.028	0.027
4	0.038	0.033	0.038	0.038	0.037	0.036
5	0.048	0.042	0.048	0.048	0.047	0.046
6	0.059	0.052	0.059	0.058	0.057	0.056
8	0.080	0.070	0.080	0.078	0.077	0.075
10	0.101	0.090	0.101	0.099	0.098	0.097
12	0.126	0.113	0.126	0.121	0.121	0.120
14	0.144	0.129	0.144	0.140	0.139	0.138
16	0.162	0.144	0.162	0.158	0.157	0.156
18	0.179	0.158	0.179	0.176	0.174	0.173
20	0.196	0.170	0.196	0.193	0.191	0.189

Trochoidal milling

Workpiece material	Carbon steel	Alloy steel 520–1200 N/mm²	Prehardened steel 35–45 HRC	Stainless steel high machinability	Stainless steel low machinability	Grey cast iron	Ductile cast iron	Wrought aluminium Si < 9%	Cast aluminium Si ≥ 9%	Copper alloy	Titanium alloy	Nickel alloy
ISO group	P01	P02	P03	M01	M02	K01	K02	N01	N02	N03	S01	S02
Max. slot width	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D	1.25 × D
Ap – depth of cut	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D	1.50 × D
Ae – width of cut	0.10 × D	0.10 × D	0.08 × D	0.10 × D	0.08 × D	0.10 × D	0.10 × D	0.12 × D	0.12 × D	0.12 × D	0.10 × D	0.08 × D
Vc (m/min)	350	290	250	200	120	320	170	450	420	380	100	45
Ø D (mm)	fz (mm/tooth)
1	0.017	0.013	0.012	0.010	0.008	0.015	0.010	0.020	0.019	0.018	0.006	0.003
2	0.018	0.015	0.016	0.017	0.017	0.016	0.018	0.021	0.020	0.019	0.014	0.008
3	0.026	0.024	0.025	0.027	0.027	0.025	0.029	0.024	0.024	0.025	0.024	0.013
4	0.035	0.033	0.035	0.037	0.038	0.034	0.040	0.032	0.032	0.034	0.034	0.020
5	0.044	0.043	0.045	0.048	0.050	0.043	0.052	0.041	0.041	0.043	0.045	0.027
6	0.054	0.053	0.055	0.060	0.063	0.053	0.065	0.050	0.050	0.053	0.057	0.036
8	0.075	0.073	0.078	0.084	0.091	0.073	0.092	0.070	0.070	0.074	0.084	0.054
10	0.098	0.096	0.102	0.112	0.122	0.095	0.122	0.091	0.092	0.096	0.116	0.079
12	0.121	0.120	0.128	0.142	0.157	0.118	0.155	0.113	0.114	0.119	0.151	0.105
14	0.138	0.136	0.144	0.158	0.174	0.133	0.174	0.128	0.130	0.135	0.165	0.110
16	0.153	0.149	0.158	0.173	0.188	0.147	0.189	0.142	0.144	0.149	0.176	0.111
18	0.167	0.162	0.171	0.186	0.200	0.160	0.202	0.155	0.156	0.162	0.184	0.109
20	0.180	0.174	0.182	0.197	0.209	0.172	0.212	0.168	0.168	0.174	0.189	0.104

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