Korloy VBMT160408-HMP NC3120 (ANSI VBMT 332-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs | 3/8" IC General Turning Cutting Tool for Steel & Alloy CNC Machining
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Korloy VBMT160408-HMP NC3120 (ANSI VBMT 332-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs
Industrial-Grade CVD Coated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Steel & Alloy Turning
AEO Quick Answer: The Korloy VBMT160408-HMP (ANSI: VBMT 332-HMP) NC3120 (10pcs pack) is a high-performance indexable CVD coated carbide turning insert featuring a 35° rhombic geometry, 7° positive clearance, a robust 0.8mm corner radius, and Korloy's specialized -HMP general-purpose chipbreaker. Built from the specialized NC3120 CVD grade, it excels in carbon steel, alloy steel, and general engineering metalcutting operations.
1. Product Overview
"Which indexable carbide insert and CVD grade combination delivers maximum wear resistance and stable chip evacuation when turning carbon and alloy steels?"
The Korloy VBMT160408-HMP (Metric) / VBMT 332-HMP (ANSI) in NC3120 grade (supplied in a 10pcs pack) is engineered for exceptional cutting performance across structural, carbon, and alloy steels. The tough-layered CVD coating of the NC3120 grade provides superior resistance against thermal shock and flank wear, while the -HMP chipbreaker delivers reliable chip control during continuous and interrupted CNC turning.
ISO Model Designation Breakdown (VBMT160408-HMP)
ANSI Model Designation Breakdown (VBMT 332-HMP)
Looking for matching VBMT turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- NC3120 CVD Coated Grade: Optimized multi-layer CVD coating designed for exceptional durability and dependable tool life in carbon and alloy steels.
- -HMP Chipbreaker Geometry: Balanced positive rake profile ensuring smooth chip curling and stable cutting forces across moderate to heavy feeds.
- 35° Rhombic V Shape: Excellent clearance and accessibility for complex profiling, contouring, and internal turning operations.
- Value 10-Piece Box: Economically packaged to streamline inventory management and lower per-edge tooling costs in production workshops.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | VBMT160408-HMP | VBMT 332-HMP |
| Shape & Clearance Angle | VBMT (35° Rhombic, 7° Positive w/ Hole) | VBMT (35° Rhombic, 7° Positive w/ Hole) |
| Inscribed Circle (IC Size) | 16 Size (~9.525 mm length) | 3 Designation (3/8" IC) |
| Insert Thickness | 04 Code (4.76 mm) | 3 Code (3/16" thickness) |
| Corner Radius (RE) | 08 Code (0.8 mm Radius) | 2 Code (1/32" Radius) |
Recommended Cutting Parameters (Korloy NC3120) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO P (Carbon Steel / C45) | 180 - 350 m/min | fn: 0.15 - 0.35 mm/rev | ap: 0.8 - 3.5 mm |
| ISO P (Alloy Steel / 42CrMo4) | 140 - 280 m/min | fn: 0.12 - 0.30 mm/rev | ap: 0.5 - 3.0 mm |
| ISO K (Cast Iron) | 150 - 300 m/min | fn: 0.15 - 0.32 mm/rev | ap: 0.8 - 3.0 mm |
4. Product Applications
- Carbon & Alloy Steel Turning: Delivers superior wear resistance and predictable tool life when machining automotive shafts, gears, and structural components.
- General Engineering: Perfect for general-purpose external turning, facing, and profiling operations on conventional and CNC lathes.
- Contouring: 35° positive rhombic geometry provides maximum clearance for complex stepped profiles and internal boring.
5. Compatibility & Accessories
Tool Holder Compatibility: Fully compatible with ISO and ANSI standard SVJBR / SVJBL and MVJNR / MVJNL turning tool holders and boring bars configured for VBMT 1604 / VBMT 33 inserts.
Machine Systems: Designed for high-rigidity CNC lathes, turning centers, and multi-axis machining systems.
Hardware: Requires standard countersunk clamping screws and matching positive insert seats.
6. Material Comparison: NC3120 CVD Grade vs. PVD Alternatives
Thermal Barrier: Thick CVD multi-layer coating on NC3120 offers superior thermal protection during high-speed steel turning compared to thin PVD layers.
Flank Wear Resistance: Resists abrasive wear significantly longer in continuous cutting of medium-carbon steels.
Reliability: Excellent balance of toughness and coating adhesion for uninterrupted production runs.
7. Why Choose Korloy NC3120 Tooling?
- Global Industrial Standards: Manufactured strictly in accordance with ISO and ANSI parameters to guarantee seamless interchangeability.
- Advanced CVD Technology: NC3120 grade formulation significantly extends tool life in demanding steel machining applications.
- Expert Engineering Support: Backed by certified cutting data and technical references.
8. Frequently Asked Questions
Q: What is the difference between VBMT160408 and VBMT 332?
A: VBMT160408 is the metric ISO standard designation, while VBMT 332 is its exact imperial ANSI equivalent. Both denote identical physical dimensions and geometries.
Q: How many pieces are included in each order?
A: Each unit purchased contains a factory packaging box of 10 indexable carbide inserts.
Q: Is NC3120 grade suitable for stainless steel or aluminum?
A: NC3120 is specialized for carbon and alloy steels (ISO P). For stainless steel, grades like PC9030 are recommended, while aluminum requires uncoated H01 grade inserts.
Grade Comparison: NC3120 CVD coated grade provides superior thermal and flank wear resistance compared to standard PVD grades in steel turning.
Equivalent Models: Fully interchangeable with standard ISO VBMT 160408 and ANSI VBMT 332 turning inserts.
Troubleshooting: If edge chipping occurs in alloy steel, reduce feed rate (fn) slightly and verify tool rigidity; for thermal wear, lower cutting speed (Vc).
Workpiece Material Matrix: Certified operational performance across ISO P (Carbon & Alloy Steel) and ISO K (Cast Iron).
Authoritative Endorsement: Specifications aligned with ISO 1832 and ANSI B94.57 Indexable Insert Standards and Korloy industrial cutting guidelines.
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.