YG-1 V7plus GMF66 Solid Carbide End Mill 4 Flute Multi Helix for Stainless Steel CNC Milling Cutter
V7plus GMF66 is original YG-1 Korea high-performance solid carbide 4-flute square end mill belonging to premium V7PLUS series, specially optimized for high-efficiency rough & finish milling of stainless steel, carbon steel, alloy steel and cast iron on CNC machining centers. Equipped with exclusive multiple unequal helix angle & uneven flute pitch structure plus proprietary Y-type heat-resistant coating, this cutter effectively suppresses cutting chatter, improves chip evacuation and drastically lowers built-up edge during continuous heavy-feed machining, balancing high material removal rate and long service life for batch precision mold & mechanical component processing.
Optimized deep chip groove design accelerates hot swarf discharge, reducing cutting thermal abrasion and maintaining stable dimensional accuracy in long-cycle slotting, shoulder milling and contour profiling.
- V7PLUS exclusive Y multi-layer heat-resistant coating delivers superior high-temperature oxidation resistance & anti-adhesion, perfect for sticky stainless steel cutting.
- 4-flute unequal spacing + variable multiple helix geometry eliminates resonance chatter, upgrades workpiece surface finish and improves feed speed limit.
- Ultra-fine grain solid tungsten carbide substrate enhances edge toughness and wear resistance, applicable for material up to HRC40 hardness.
- Deep polished flute groove optimizes chip curling & smooth chip removal to avoid chip clogging inside cutter grooves during deep slot machining.
- Precision ground sharp cutting edge supports mixed roughing & finishing one-tool operation to reduce tool change cost.
- 304/316 Stainless Steel
- Carbon structural steel / Alloy steel
- Grey & ductile cast iron
- Pre-hardened steel ≤HRC40
- Nickel-based low-temperature superalloy
- Square shoulder side milling
- Full depth slot rough & finish machining
- Contour profiling & cavity milling
- Automotive & mold batch CNC processing
- General mechanical part high-feed milling
| Item | Parameter |
|---|---|
| Model | GMF66 |
| Grade Series | V7plus |
| Brand | YG-1 (Korea Original) |
| Tool Material | Ultra-fine grain Solid Tungsten Carbide |
| Flute Quantity | 4 Flutes |
| Helix Style | Multiple Unequal Variable Helix |
| Coating | Y-type high temp resistant multi-layer coating |
| Available Standard Sizes | φ3/φ4/φ5/φ6/φ8/φ10/φ12/φ16/φ20mm |
| Shank Type | Straight Plain Shank |
| Processing Type | Rough & Finish Slot / Shoulder / Contour Milling |
Combining V7PLUS advanced coating, anti-vibration unequal flute design and premium fine grain carbide blank, GMF66 realizes universal high-efficiency machining across stainless steel, steel and cast iron. It cuts chatter failure rate obviously, improves machining feed speed by 30% vs common standard end mills and extends average tool life, becoming mainstream universal solid carbide end mill for metalworking workshop mass production.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.