4 Flute Unequal Tooth Pitch Circular End Mill Stainless Steel Milling Cutters

Processed Materials	Cast Iron, Carbon Steel, Alloy Steel ~30HRC		Stainless Steel		Pre-Hardened Steel, Quenched and Tempered Steel ~40HRC		Pre-Hardened Steel, Quenched and Tempered Steel ~50HRC		Hardened Steel ~55HRC
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)
3	15900	1460	8500	215	13270	1140	10600	755	7430	430
4	11900	1510	6370	225	9950	1160	8000	770	570	440
5	9500	1620	5060	225	7960	1210	6400	810	4460	465
6	7900	1590	4250	250	6630	1235	5300	825	3710	465
8	5900	1590	3180	250	4970	1220	4000	815	2785	485
10	4700	157	2550	250	3980	1210	3200	810	2230	450
12	4000	1570	2120	250	3310	1210	2650	810	1855	450
14	3400	1460	1820	215	2840	1130	2300	755	1590	430
16	3000	1460	1590	215	2480	1130	2000	755	1390	430
18	2600	1440	1410	190	2210	1115	1800	740	1240	420
20	2400	1440	1270	190	1990	1115	1600	740	1115	420
Maximum Cutting Depth

1. The above table shows the standard values for side milling machining. When cutting grooves with the tool, the speed should be 60% to 80% of the above table, and the feed rate should be based on 50% to 70% as the standard.
2. Please use high-precision machine tools and tool holders.
3. Please use air cooling or cutting fluid that is less likely to produce smoke.
4. It is recommended to use sequential milling for side milling.
5. When the installation of machine tools and workpieces is poor, vibrations and abnormal sounds may occur. In this case, the speed and feed rate in the table above should be reduced year-on-year.
6. Minimize the tool overhang as much as possible without interference.

The 4 Flute Unequal Tooth Pitch Circular End Mill Stainless Steel Milling Cutters feature an unequal tooth pitch design, optimizing the cutting force distribution, effectively reducing cutting vibrations, and improving machining stability. This design is particularly suitable for hard-to-machine materials, ensuring longer tool life while enhancing the quality of the processed surface.

The cutter is manufactured using high-precision grinding technology and selected 0.5μm high toughness, anti-chipping material, paired with the latest stainless steel-specific coating technology to further reduce cutting resistance. The optimized spiral angle of 38°-41° helps reduce cutting heat, improves chip removal efficiency, and ensures smoother machining.

Suitable for machining a wide range of materials, including cast iron (S50C/HT250/Q235), alloy steels (P20/H13/D2), tool steels, quenched and tempered steels (NAK80/718H/FDAC), heat-treated steels (SKD61/1.2343ESR), stainless steels (SUS304/316/316L), and titanium alloys (Ti-6Al-4V), it performs excellently within a hardness range of 22HRC to 55HRC.

A wide range of specifications is available, with cutter diameters ranging from 4mm to 20mm, and optional arc radii from 0.2mm to 3mm, catering to different machining needs. With various options for cutter length, shank diameter, and overall length, the models are diverse and can be flexibly combined to meet various precision machining scenarios.