Korloy VCGT160412-AK H01 (ANSI VCGT 333-AK) Polished Aluminum Insert (10pcs)
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The Original Korloy VCGT160412-AK H01 (ANSI Cross Reference: VCGT 333-AK) is the most powerful 7° Relief Polished Carbide Insert in the V-style family. Engineered for Maximum Material Removal Rate (MRR), the 1604 (3/8" IC) substrate provides immense rigidity. The massive 1.2mm (3/64") corner radius ensures unmatched edge toughness, allowing for extreme feed rates and stable performance in interrupted cuts or scaly cast aluminum surfaces.
Ultimate Edge Strength: The R1.2 (VCGT 333) geometry is built to withstand heavy radial forces. It is the go-to choice for large-scale aluminum projects where tool failure is not an option and where you need to move a lot of material quickly while maintaining a polished Ra finish.
Technical Specifications (Metric & ANSI):
| ISO Designation | VCGT 160412-AK |
| ANSI Designation | VCGT 333-AK |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 1.2 mm / (0.047") |
| Relief Angle | 7° (C-Type) |
| Grade | H01 (Micro-Polished Uncoated Carbide) |
Core Performance Benefits:
- Maximum Edge Reliability: The large 1.2mm radius is nearly impervious to chipping, making it perfect for roughing passes on forged or cast aluminum parts.
- High-Feed Capability: Allows for significantly higher feed rates (up to 0.45 mm/rev) than smaller radius inserts, maximizing machine uptime.
- H01 Mirror Surface: Micro-polished finish prevents gummy aluminum from sticking to the rake face, ensuring clean chip flow even at high depths of cut.
- Versatile 35° Profile: Despite its strength, the slim profile still allows for complex contouring and accessibility in tight areas.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Aluminum Alloys (6k/7k) | 300-1000 m/min | 0.15-0.45 mm/rev | 0.5-5.0 mm |
| Cast Aluminum (High Si) | 150-700 m/min | 0.12-0.35 mm/rev | 0.5-4.5 mm |
| Copper & Brass | 150-600 m/min | 0.10-0.30 mm/rev | 0.3-3.5 mm |
Compatible Tool Holders (7° Relief Angle):
Precision-matched for VCGT 1604 (ANSI 33) tool holder systems:
- Heavy-Duty External Tools: SVJCR 2525M16 / SVJCR 3232P16
- Maximum Rigid Boring Bars: S32T-SVUCR16 / S40U-SVUCR16
Machinist Tip: The R1.2 Advantage
When to choose VCGT 333-AK over smaller radii:
If you are turning aluminum parts with cross-holes or irregular surfaces, the 1.2mm radius provides the mechanical strength needed to survive the impacts that would snap an R0.2 or R0.4 tip.
To get the most out of the H01 mirror finish with such a large radius, ensure your machine can maintain high RPM. A large radius creates more tool pressure, so machine rigidity is essential to avoid chatter.
Pro Advice: The R1.2 radius is exceptional for creating smooth fillets and large radii in the corners of large aluminum housings.
Packaging: 10 pieces per box.
VCGT 333-AK Korloy H01, VCGT 160412 for aluminum, large radius 35 degree inserts, heavy duty aluminum roughing inserts, high speed turning copper alloys, SVJCR 2525M16 high-feed tips