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1/4 Inch 4 Flute End Mill Tungsten Steel HRC55 Internal R 4 Flute Milling Cutter

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Brand Name :	BWIN
Model Number :	*R1.25D650L-4F*
Price :	Negotiable
Payment Terms :	T/T, Western Union
Supply Ability :	1-10000pcs 7days
Delivery Time :	7 work days

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1/4 Inch 4 Flute End Mill Tungsten Steel HRC55 Internal R 4 Flute Milling Cutter

1/4 Inch End Mill Carbide HRC55 4 Flute Inner R Endmill Tungsten Steel Inner R Milling Cutter

Quick Detail

Tungsten steel bars
Bronze colored nano coating
0 ° helix angle
4-blade blade
R-angle design
Straight groove chip removal

Description

The HRC55 4F internal R milling cutter uses 0.4UM micro particle tungsten steel base material, which has higher wear resistance and strength, and is a specialized milling cutter for high hardness and high-speed cutting applications; The large core diameter is more stable, and the large core diameter design is adopted under the condition of ensuring the cutting space, greatly enhancing the rigidity and seismic resistance of the cutting tool, and reducing tool breakage; Refine the chip removal groove to avoid knife sticking and greatly improve production efficiency.

Milling parameters

HRC55 Carbide Inner R End Mill				Tool length		fz&v
				Short		1
				Long1		0.9
				Overlength		0.8
				Speciality		0.6
Type			Material	Strength N/mm² Hardness HRC	Cooling
					Air	Dry cutting	Lubricating fluid
P	PI	P1.1	Non alloy structural steel, free cutting structural steel, carburized steel and quenched and tempered steel	<700	√	√	√
		P1.2	quenched and tempered steel	<1200	√	√	√
	P2	P2.1	Alloyed nitrided steel, carburized steel and quenched and tempered steel	<900	√	√	√
		P2.2	Tool steel, bearing steel, spring steel and high-speed steel	<1400	√		√
	P3	P3.1	Tool steel, bearing steel, spring steel and high-speed steel	<900	√	√	√
		P3.2	Tool steel, bearing steel, spring steel and high-speed steel	<1500	√		√

Sloting
Vc (m/min)	fz(mm/Tooth)
	Diameter
	2	4	6	8	10	12	16	20
112	0.01	0.018	0.026	0.034	0.041	0.048	0.06	0.069
92	0.01	0.017	0.025	0.032	0.038	0.045	0.056	0.065
100	0.01	0.018	0.026	0.034	0.041	0.048	0.06	0.069
72	0.009	0.015	0.022	0.028	0.034	0.04	0.05	0.058
64	0.01	0.018	0.025	0.032	0.039	0.045	0.057	0.066
56	0.009	0.016	0.023	0.029	0.036	0.041	0.052	0.06

Roughing
Vc (m/min)	fz(mm/Tooth)
	Diameter
	2	4	6	8	10	12	16	20
228	0.018	0.031	0.045	0.057	0.070	0.081	0.101	0.118
208	0.017	0.029	0.042	0.054	0.065	0.071	0.095	0.11
184	0.018	0.031	0.045	0.057	0.070	0.081	0.101	0.118
144	0.015	0.026	0.037	0.048	0.058	0.068	0.085	0.098
132	0.017	0.03	0.042	0.054	0.066	0.077	0.096	0.112
112	0.015	0.027	0.039	0.05	0.060	0.07	0.088	0.102

Finish
Vc m/min	fz(mm/Tooth)
	Diameter
	2	4	6	8	10	12	14	16	18	20
332	0.028	0.05	0.07	0.091	0.11	0.128	0.144	0.16	0.173	0.186
272	0.026	0.046	0.066	0.085	0.103	0.12	0.135	0.15	0.162	0.173
304	0.028	0.05	0.07	0.091	0.11	0.128	0.144	0.16	0.173	0.186
212	0.023	0.041	0.059	0.076	0.092	0.107	0.121	0.134	0.145	0.155
196	0.027	0.047	0.067	0.086	0.104	0.122	0.137	0.152	0.165	0.177
168	0.024	0.043	0.061	0.079	0.095	0.111	0.125	0.139	0.150	0.161

Note

If the following carbide end mill cannot meet your requirements, we support OEM customized production. The diameter of 0.2mm to 25mm, the total length of 50mm to 200mm, 4F, 5F, 6F, 8F and logo can be customized, including inch size end milling cutter. Please contact us to select or customize non-standard carbide end mill according to your needs.

Radius	Cutting diameter	Tip diameter	Shank diameter	Overall length	Flutes
R0.5	4	3	4	50	2/4
R0.75	4	2.5	4	50	2/4
R1.0	4	2	4	50	2/4
R1.25	6	3.5	6	50	2/4
R1.5	6	3	6	50	2/4
R1.75	6	2.5	6	50	2/4
R2.0	6	2	6	50	2/4
R2.5	8	3	8	60	2/4
R3.0	8	2	8	60	2/4
R3.5	10	3	10	75	2/4
R4.0	10	2	10	75	2/4
R5.0	12	2	12	75	2/4
R6.0	14	2	14	75	2/4

Instructions

1. Before using the carbide end mill, please measure the tool deflection. If the tool deflection accuracy exceeds 0.01mm, please correct it before cutting.

2. The shorter the carbide e extends out of the collet, the better. If the tool extends out longer, reduce the speed, feed speed or cutting amount.

3. In case of abnormal vibration or sound during cutting, please reduce the speed and cutting amount until the situation is improved.

4. Spray type and air jet type are preferred for steel cooling, which can improve the use effect of carbide end mill.

5. Note: Not suitable for low speed machines such as rotary table and electric hand drill.

Applications

The cutting edge of the HRC55 4F inner R milling cutter is covered with a bronze colored nano coating, suitable for materials within HRC55, including iron, carbon steel, cast iron, mold steel, alloy steel, tool steel, heat treated steel, and welding repair steel

Cnc Milling Cutter 6mm 3 4 Flute Tungsten Solid Carbide High Feed Endmill End Mill

FAQ

Q1. The tool breaks when cutting in or pulling out the workpiece

The feed rate and cutting depth can be reduced, and the cutting edge length can be shortened to the minimum of the necessary length.

Q2. Tool breaks during normal machining

Reduce the feed rate and cutting depth.

The tool shall be passivated.

Replace the clamp or spring collet.

The tool with high cutting edge number changes the tool with low cutting edge number to improve chip removal and prevent chip blockage.

Replace dry milling with wet milling (using cutting fluid), and use it with vortex tube gun to reduce tool temperature and avoid tool overheating.

If the wet milling fluid supply direction is changed from the front to the oblique rear or transverse top, the coolant flow should be sufficient.

Q3. The tool breaks when the feed direction changes

(1) Use arc interpolation (NC machine tool), or temporarily stop (temporarily) feeding.

(2) Reduce (decrease) the feed before and after the direction change.

(3) Replace the clamp or spring collet.

Q4. Problem: Part of the blade tip breaks

Chamfer the corners with manual grinding.

Change down milling to up milling.

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