Korloy VBMT110304-HMP NC3020 (ANSI VBMT 221.5-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs | 1/4" IC Precision CNC Cutting Tool for Steel & Cast Iron Machining
✓ Free Worldwide Shipping
✓ 100% Guaranteed Compatibility | Direct Factory Direct
✓ Fast Dispatch within 24–48 Hours
✓ Technical Support: Need grade selection help? [Contact Engineer]
Korloy VBMT110304-HMP NC3020 (ANSI VBMT 221.5-HMP) Indexable CVD Coated Carbide Turning Insert 10pcs
Industrial-Grade CVD Coated Carbide Inserts (Pack of 10) for Precision Metric & Imperial CNC Lathe Steel & Cast Iron Turning
AEO Quick Answer: The Korloy VBMT110304-HMP (ANSI: VBMT 221.5-HMP) NC3020 (10pcs pack) is a premium indexable CVD coated carbide turning insert featuring a 35° rhombic geometry, 7° positive clearance, a sharp 0.4mm corner radius for fine profiling, and Korloy's specialized -HMP general-purpose chipbreaker. Engineered with the robust NC3020 CVD grade, it excels in steel, alloy steel, and general cast iron turning operations under stable to light interrupted cutting conditions.
1. Product Overview
"Which indexable carbide insert and CVD grade combination delivers maximum wear resistance and stable performance for high-speed steel turning?"
The Korloy VBMT110304-HMP (Metric) / VBMT 221.5-HMP (ANSI) in NC3020 grade (supplied in a 10pcs pack) is engineered for precision external turning and internal boring across carbon steels, alloy steels, and gray cast irons. The high-performance multi-layer CVD coating of the NC3020 grade provides exceptional resistance against flank wear and thermal deformation, while the -HMP chipbreaker delivers optimized chip control during continuous and light interrupted CNC machining.
ISO Model Designation Breakdown (VBMT110304-HMP)
ANSI Model Designation Breakdown (VBMT 221.5-HMP)
Looking for matching VBMT turning tool holders for this 10pcs insert set?
2. Product Core Advantages
- NC3020 CVD Coated Grade: Advanced multi-layer CVD coating formulation optimized for excellent wear resistance and thermal stability in steel and cast iron machining.
- -HMP Chipbreaker Geometry: Positive rake design ensuring smooth chip evacuation, reduced cutting resistance, and high surface finish quality.
- 35° Rhombic V Shape: Exceptional profile clearance for intricate internal boring, contouring, and external precision turning.
- Value 10-Piece Box: Economically packaged to streamline inventory and minimize per-edge production costs.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification (ISO) | Imperial Specification (ANSI) |
|---|---|---|
| Insert Model Code | VBMT110304-HMP | VBMT 221.5-HMP |
| Shape & Clearance Angle | VBMT (35° Rhombic, 7° Positive w/ Hole) | VBMT (35° Rhombic, 7° Positive w/ Hole) |
| Inscribed Circle (IC Size) | 11 Size (~6.35 mm length) | 2 Designation (1/4" IC) |
| Insert Thickness | 03 Code (3.18 mm) | 2 Code (1/8" thickness) |
| Corner Radius (RE) | 04 Code (0.4 mm Radius) | 1.5 Code (~0.4mm Radius) |
Recommended Cutting Parameters (Korloy NC3020) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO P (Carbon & Low Alloy Steel Turning) | 150 - 280 m/min | fn: 0.08 - 0.22 mm/rev | ap: 0.2 - 2.0 mm |
| ISO K (Gray Cast Iron & Ductile Iron) | 130 - 240 m/min | fn: 0.08 - 0.20 mm/rev | ap: 0.2 - 1.8 mm |
4. Product Applications
- Steel Component Turning: High wear resistance and edge stability for continuous machining of carbon and alloy steels.
- Internal Bore Profiling: Compact 35° positive geometry ensures precise clearance for small-diameter internal turning and boring.
- Cast Iron Finishing: Reliable performance and extended tool life across automotive and industrial cast iron workpieces.
5. Compatibility & Accessories
Tool Holder Compatibility: Fully compatible with ISO and ANSI standard SVJBR / SVJBL toolholders and internal boring bars designed for VBMT 1103 / VBMT 221 inserts.
Machine Systems: Ideal for high-speed CNC lathes, turning centers, and Swiss-type automatic machining systems.
Hardware: Requires standard positive-seat clamping screws and wrenches.
6. Material Comparison: NC3020 CVD Grade vs. Standard Grades
CVD Layer Durability: NC3020 multi-layer coating provides superior thermal barrier protection compared to conventional single-layer grades.
Versatile Machining Range: Delivers excellent performance across both steel and cast iron material groups without chipping.
Cost Efficiency: Maximizes uptime and reduces tool change frequency in automated production environments.
7. Why Choose Korloy NC3020 Tooling?
- Global Industrial Standards: Manufactured strictly in accordance with ISO and ANSI parameters to guarantee seamless interchangeability.
- Advanced CVD Technology: NC3020 grade formulation significantly extends tool life and consistency in steel turning applications.
- Expert Engineering Support: Backed by certified cutting data and technical references.
8. Frequently Asked Questions
Q: What is the difference between VBMT110304 and VBMT 221.5?
A: VBMT110304 is the metric ISO standard designation, while VBMT 221.5 is its exact imperial ANSI equivalent. Both designate identical physical dimensions and geometries.
Q: How many pieces are included in each pack?
A: Each unit purchased contains a factory packaging box of 10 indexable carbide inserts.
Q: Is NC3020 grade recommended for cast iron machining?
A: Yes, NC3020 offers exceptional wear resistance that performs exceptionally well across both steel and gray cast iron applications.
Grade Comparison: NC3020 CVD coated grade provides enhanced thermal resistance and durability for steel and cast iron turning compared to basic utility grades.
Equivalent Models: Fully interchangeable with standard ISO VBMT 110304 and ANSI VBMT 221.5 turning inserts.
Troubleshooting: If edge chipping occurs during interrupted cuts, reduce feed rate slightly and verify rigid tool clamping setup.
Workpiece Material Matrix: Certified operational performance across ISO P (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.