2 Flute Ball Nose End Mills

Processed Materials	Cast Iron Nodular Cast Iron		Carbon Steel, Alloy Steel ~750N/mm²		Carbon Steel, Alloy Steel ~30HRC		Pre-Hardened Steel, Quenched and Tempered Steel ~40HRC		Stainless Steel		Pre-Hardened Steel, Quenched and Tempered Steel ~50HRC
Diameter (mm)	Rotational Speed (min-1)	Feed Speed (mm/min)	Rotational Speed (min-1)	Feed Speed (mm/min)	Rotational Speed (min-1)	Feed Speed (mm/min)	Rotational Speed (min-1)	Feed Speed (mm/min)	Rotational Speed (min-1)	Feed Speed (mm/min)	Rotational Speed (min-1)	Feed Speed (mm/min)
R0.5	40000	800	40000	800	38000	700	32000	320	22300	200	25000	275
R1.0	24000	900	24000	900	19000	760	16000	400	11150	230	13000	275
R1.5	15500	950	15500	950	12750	760	10600	450	7400	290	8500	280
R2.0	11500	950	11500	950	9550	760	8000	550	5550	370	6500	370
R2.5	9500	1050	9500	1050	7650	800	6400	550	4450	370	5000	375
R3.0	8000	1050	8000	1050	6400	800	5300	580	3700	390	4200	390
R4.0	6000	1300	6000	1300	4800	950	4000	700	2750	455	3200	440
R5.0	4800	1200	4800	1200	3800	900	3200	650	2200	430	2500	440
R6.0	4000	1100	4000	1100	3200	840	2650	610	1850	430	2100	420
R8.0	3000	1050	3000	1050	2400	800	2000	600	1350	380	1600	375
R10.0	2400	950	2400	950	1900	680	1600	560	1100	370	1250	330
Maximum Cutting Depth

1. Please use high-precision machine tools and tool holders.
2. Please use air cooling or cutting fluid that is less likely to produce smoke.
3. It is recommended to use sequential milling for side milling.
4. 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.
5. Minimize the tool suspension length as much as possible without interference.

NNC-2B 2-flute ball nose end mills offer great flexibility in size selection, with diameters ranging from 1mm to 10mm, common flute lengths from 2mm to 25mm, and total lengths including 50mm, 75mm and 100mm. These different combinations can meet a variety of processing requirements, such as shallow grooves, bevel cutting and complex contour processing, while maintaining stable tool rigidity even at smaller diameters.

The tool adopts a ball nose geometry, and its curved cutting edge helps reduce cutting resistance and improve surface finish. The balanced distribution of cutting edges along the arc transition ensures more uniform force during operation, effectively reducing tool vibration and further improving surface quality and dimensional accuracy.

The 2-flute ball nose end mills is manufactured using high-precision CNC grinding technology with a high-toughness, non-fragmentable (0.6μm) fine-grained matrix, which can maintain sharpness and durability even under high-speed cutting conditions. The latest chromium-aluminum composite coating has excellent heat and wear resistance, allowing the end mill to maintain stable performance at high temperatures and significantly extend tool life.

These end mills are suitable for a wide range of materials with hardness up to HRC45, including carbon steel, alloy steel, pre-hardened steel and cast iron, as well as non-ferrous metals such as copper alloys.