Korloy VBGT160404-AK H01 (ANSI VBGT 331-AK) Polished Aluminum Insert (10pcs)
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The Original Korloy VBGT160404-AK H01 (ANSI Cross Reference: VBGT 331-AK) is a heavy-duty Polished Uncoated Carbide Insert designed for Superior Surface Finishing on large and medium-sized non-ferrous components. The 1604 (ANSI 33) footprint is 50% thicker than the 11-size, providing the stability needed for higher material removal rates. Combined with the AK (Aluminum Knight) chipbreaker and the H01 Grade, this insert offers an unmatched combination of edge sharpness and thermal stability for Aluminum, Copper, and Brass.
High-Efficiency Finishing: The 0.4mm (0.016") corner radius is specifically designed to handle increased feed rates while maintaining a high-gloss finish. The mirror-polished rake face prevents "Built-Up Edge" (BUE) — the leading cause of surface defects in aluminum alloys like 6061 or 7075.
Technical Specifications (Metric & ANSI):
| ISO Designation | VBGT 160404-AK |
| ANSI Designation | VBGT 331-AK |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.4 mm / (0.016") |
| Relief Angle | 5° (B-Type) |
| Grade | H01 (Micro-Polished Uncoated Carbide) |
Core Performance Benefits:
- Enhanced Edge Security: The 0.4mm radius offers a more robust cutting edge compared to the 0.2mm version, significantly reducing the risk of micro-chipping.
- Consistent Mirror Finish: H01 polished surface provides ultra-low friction, ensuring chips flow away smoothly without sticking to the rake face.
- Increased Productivity: Stable 16-size body allows for higher feed rates and depths of cut in semi-finishing operations.
- 35° Versatility: Ideal for complex profiling, undercuts, and detail work on medium-to-large CNC lathes.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Aluminum Alloys (Wrought) | 300-1100 m/min | 0.08-0.25 mm/rev | 0.1-3.5 mm |
| Copper / Brass | 200-650 m/min | 0.05-0.20 mm/rev | 0.1-2.5 mm |
| Plastics (Delrin/PEEK) | 150-500 m/min | 0.10-0.30 mm/rev | 0.2-4.5 mm |
Compatible Tooling Systems (5° Relief):
Precision-matched for VBGT 1604 (ANSI 33) positive tool holders:
- External Profile Tool: SVJBR 2020K16 / SVJBR 2525M16
- Precision Boring Bars: S25S-SVUBR16 / S32T-SVUBR16
Machinist Tip: Optimization Guide
How to maximize your VBGT 331 results:
Because of the R0.4 radius, you can push the feed rate (fn) higher. This not only increases production but also helps the AK chipbreaker "snap" the chips more effectively in softer alloys.
When machining high-silicon aluminum or copper, high-pressure flood coolant is highly recommended. It keeps the H01 edge cool and washes away abrasive chips that can scratch your mirror finish.
Pro Advice: For large external profiling, ensure your SVJBR tool holder is in good condition. Any vibration will show up instantly on a mirror-polished aluminum surface.
Packaging: 10 pieces per box.
VBGT 331-AK Korloy H01, VBGT 160404 aluminum turning, mirror finish inserts for 6061 aluminum, high feed aluminum profiling inserts, SVJBR 2525 tool holder inserts, polished carbide for brass machining
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.