YG-1 PRECIZ GMM88 4-Flute Carbide End Mill with 38° Helix Angle and Ultra-Micrograin Carbide for CNC Milling
The YG-1 PRECIZ GMM88 is a high‑performance solid carbide square end mill from YG‑1 (South Korea), optimized for general‑to‑medium machining of carbon steel, alloy steel, and stainless steel (304/316L). It features a 4‑flute design, 38° helix angle, ultra‑micrograin carbide substrate, and multi‑layer PVD coating, delivering high rigidity, smooth chip evacuation, excellent wear resistance, and long tool life in wet/dry CNC milling. Ideal for side milling, face milling, slotting, and profiling in automotive, mold, and general engineering.
- 4‑Flute Square End (GMM88): Balanced rigidity and chip space, ideal for finishing/medium roughing.
- 38° Helix Angle: Reduces cutting force, improves surface finish, suitable for stainless steel.
- Ultra‑Micrograin Carbide: High hardness and toughness, resists chipping in interrupted cuts.
- Premium PVD Coating: Low friction, high oxidation resistance, anti‑built‑up edge in steel/stainless steel.
- Center‑Cutting Capability: Enables direct plunging and slotting.
- Straight Shank: Compatible with standard ER collets and tool holders.
- PRECIZ Series: YG‑1’s high‑precision line for tight tolerance machining.
- Carbon steels (1045, S355, Q235) – primary
- Alloy steels (4140, 42CrMo4, HRC <48)
- Stainless steels (304, 316L, 420) – optimized
- Cast iron (HT200, HT250)
- Non‑ferrous metals (brass, copper, light cuts)
- Square shoulder milling and step profiling
- Face milling (medium depth of cut)
- Precision slotting and pocketing
- Side milling and peripheral finishing
- Dry/wet machining of stainless steel components
- General‑purpose CNC milling in steel and stainless steel
| Item | Parameter |
|---|---|
| Model | YG-1 PRECIZ GMM88 |
| Product Type | Solid Carbide Square End Mill |
| Series | PRECIZ GMM88 (Steel & Stainless Steel) |
| Flute Count | 4 |
| End Style | Square (Flat) |
| Helix Angle | 38° |
| Substrate | Ultra‑Micrograin Tungsten Carbide |
| Coating | Multi‑Layer PVD (TiAlN/TiN) |
| Cutting Diameter Range | 2.0 mm – 20.0 mm |
| Shank Type | Straight (Plain) |
| Lengths | Standard (STD), Long (XL) |
| Tolerance | h6 (Precision Grade) |
| Country of Origin | South Korea |
As a versatile 4‑flute end mill for steel and stainless steel, it combines micrograin toughness, 38° helix geometry, and premium PVD coating for stable performance and extended tool life. YG‑1’s world‑class manufacturing ensures consistent quality for mass production and precision machining
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