KORLOY SNMG190616-GR NC3030 Indexable Carbide Turning Inserts | SNMG643-GR (ANSI Equivalent) CVD Coated Inserts for General Steel Machining - 10pcs/box
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KORLOY SNMG190616-GR NC3030 Indexable Carbide Turning Inserts | SNMG643-GR (ANSI Equivalent) CVD Coated Inserts for General Steel and Alloy Machining - 10pcs/box
High-Performance ISO-Standard 90° Square Negative Indexable Turning Cutters Featuring NC3030 CVD Coating and GR Chipbreaker for Stable Steel Roughing and General Turning
1. Product Overview
"Which indexable turning insert provides balanced wear resistance and dependable toughness for general-purpose steel roughing and semi-finishing?" CNC machinists and manufacturing engineers consistently select the KORLOY SNMG190616-GR NC3030. This industrial-grade turning insert pairs a versatile NC3030 CVD-coated carbide grade with a specially engineered -GR heavy roughing chipbreaker geometry, ensuring smooth chip evacuation, high thermal stability, and prolonged tool life across continuous and slightly interrupted steel turning operations. Built on a robust 90° square negative outline with 8 indexable cutting edges and a heavy-duty 1.6mm corner radius, it delivers dependable performance in demanding production environments.
2. Product Key Features
- NC3030 CVD Coated Grade: Formulated with a balanced carbide substrate and a wear-resistant multi-layer CVD coating optimized for general steel turning and broad application ranges.
- -GR Chipbreaker & 1.6mm Radius: Features an optimized groove geometry for high feed rates and deep depths of cut, matched with a sturdy 1.6mm corner radius to distribute thermal and mechanical stress.
- Double-Sided Indexable Economy: Square negative configuration offers 8 total cutting edges (4 per side), maximizing cost-effectiveness per insert.
- Standard Industrial Packaging: Supplied in protective factory containers containing 10 pieces for efficient tool inventory management.
3. Technical Specifications & Model Breakdown
Review the comprehensive technical specifications, metric-to-imperial cross-references, and ISO nomenclature breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | SNMG190616-GR | SNMG643-GR |
| Inscribed Circle (IC) | 19.05 mm | 0.750 in (3/4") |
| Insert Thickness (S) | 6.35 mm | 0.250 in (1/4") |
| Corner Radius (r) | 1.6 mm | 0.063 in (~1/16") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel & Low Alloy Steel (e.g., 1045, 4140) | 180 - 320 | 0.30 - 0.65 |
| General Cast Iron & Structural Steel | 150 - 260 | 0.35 - 0.70 |
Need matching MSSNR or PSBNR external turning toolholders for your SNMG 1906 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY SNMG190616-GR NC3030 insert is optimized for diverse industrial turning applications:
- General Machine Shops: Efficient roughing and contour turning of standard carbon and alloy steel machine components.
- Automotive & Industrial Manufacturing: Production turning of shafts, axles, and heavy structural transmission parts.
- Maintenance & Repair: Reliable metal removal for general equipment refurbishment and heavy-duty workshop tasks.
5. Compatibility
Engineered to fit standard ISO negative toolholding configurations:
- Toolholders: Fully compatible with standard MSSNR/L, PSBNR/L, and CSBNR/L pin-and-clamp external turning tool holders designed for SNMG 1906 inserts.
- Machine Equipment: Designed for standard CNC lathes, conventional heavy-duty lathes, and automated turning cells.
6. Material Comparison & Workpiece Matrix
Examine grade application suitability across ISO workpiece material classifications.
| ISO Material Category | Target Materials | NC3030 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, low alloy steel, and free-cutting steel (e.g., C45, 20CrMnTi) | Optimal (Versatile General CVD Grade for P10–P30 Turning) |
| K (Cast Iron) | Gray cast iron and nodular cast iron components | Good (Suitable for Stable Cast Iron Roughing K15–K30) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch authenticity and consistent cutting performance.
Fast Global Logistics
Maintained warehouse stock and streamlined international shipping networks ensure rapid dispatch to eliminate production delays.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting support.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are included in each box?
A: Each standard factory box contains exactly 10 pieces of SNMG190616-GR NC3030 inserts.
Q: What is the primary difference between NC3030 and high-toughness grades?
A: NC3030 is engineered for balanced wear resistance and toughness, making it ideal for general steel turning, whereas specialized heavy grades focus on extreme impact resistance.
Q: Which toolholders are compatible with this SNMG 1906 insert?
A: It fits standard ISO negative turning tool holders designed for SNMG 1906 geometry, such as MSSNR or PSBNR external toolholder bars.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.