Ultra Hard 2 Flute Ball Nose End Mills

Processed Materials	Pre-Hardened Steel 40~50HRC				Hardened Steel 50~60HRC				Hardened Steel 60~68HRC
Ball Head Radius (mm)	Rotational Speed (min-1)	Feed Speed (mm/min)	ap (mm)	ae (mm)	Rotational Speed (min-1)	Feed Speed (mm/min)	ap (mm)	ae (mm)	Rotational Speed (min-1)	Feed Speed (mm/min)	ap (mm)	ae (mm)
R0.5	40000	1900	0.01	0.05	36000	1500	0.01	0.05	32000	1400	0.01	0.05
R1.0	33000	3100	0.02	0.075	26000	2100	0.02	0.075	24000	2000	0.02	0.075
R1.5	29000	4100	0.03	0.1	23000	2900	0.03	0.1	21000	2600	0.03	0.1
R2.0	22000	3900	0.04	0.15	17000	2500	0.04	0.15	15500	2100	0.04	0.15
R2.5	17500	3500	0.05	0.15	13500	2200	0.05	0.15	13000	2000	0.05	0.15
R3.0	15000	3100	0.06	0.2	11500	1700	0.06	0.2	10500	1500	0.06	0.2
R4.0	11000	2500	0.08	0.25	8600	1600	0.08	0.25	8000	1400	0.08	0.25
R5.0	9000	2000	0.1	0.3	7000	1400	0.1	0.3	6000	1200	0.1	0.3
R6.0	7500	1800	0.1	0.35	5700	1300	0.1	0.35	5300	1200	0.1	0.35
R8.0	5500	1800	0.1	0.4	4300	1300	0.1	0.4	4000	1200	0.1	0.4
R10.0	4500	1800	0.1	0.5	3500	1300	0.1	0.5	3200	1200	0.1	0.5
Maximum Cutting Depth

1. Please use high-precision and high rigidity equipment and fixtures.
2. When the rigidity of the machine tool and workpiece installation is poor, vibration and abnormal sound may occur. In this case, the speed and feed rate in the table above should be reduced year-on-year.
3. Please use air cooling or MQL (minimum amount of oil mist cooling).
4. It is recommended to use sequential milling for side milling.
5. Minimize the tool suspension length as much as possible without interference.

NNCH-2B ultra hard 2 flute ball nose end mills are available in a variety of sizes, ranging from 1mm to 12mm in diameter, and can be matched with a variety of blade lengths and full lengths according to different needs to meet the flexibility requirements of precision machining. The free choice of different specifications and models makes it suitable for a variety of machining scenarios, ensuring higher adaptability in precision machining tasks.

The ball end shape design optimizes the cutting angle of the tool, making it superior in complex surface machining, especially suitable for mold manufacturing, precision parts machining and other scenes that require high finish and high precision. The 30° helix angle design helps reduce cutting resistance and improve chip removal efficiency, thereby improving machining stability and tool life.

The milling cutter is made of ultra-fine micro-particle carbide material, combined with a high-precision coating process, which greatly improves wear resistance and anti-chipping performance. The overall hardness can reach HRC≤65, ensuring excellent sharpness and stability when machining high-hardness materials.

This product is suitable for a wide range of processing materials, including carbon steel, alloy steel, pre-hardened steel (HRC35-45), hardened steel (HRC45-65), high-hardness heat-treated steel, etc. Whether it is high-precision mold processing or efficient cutting of hard materials, the NNCH-2B two-edge ball end mill can provide excellent performance.