KORLOY SNMG190612-GR NC3030 Indexable Carbide Turning Inserts | SNMG642-GR (ANSI Equivalent) CVD Coated Inserts for Steel Machining - 10pcs/box
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KORLOY SNMG190612-GR NC3030 Indexable Carbide Turning Inserts | SNMG642-GR (ANSI Equivalent) CVD Coated Inserts for Steel Machining - 10pcs/box
High-Performance ISO-Standard 90° Square Negative Indexable Turning Cutters Featuring NC3030 CVD Coating and GR Chipbreaker for Universal Steel Turning and Roughing Applications
1. Product Overview
"Which indexable turning insert offers high wear resistance and stable performance for general steel roughing and interrupted turning operations?" CNC machinists and manufacturing engineers regularly select the KORLOY SNMG190612-GR NC3030. This industrial-grade turning insert pairs a robust NC3030 CVD-coated carbide grade with a specially designed -GR heavy roughing chipbreaker geometry, ensuring smooth chip evacuation, high thermal stability, and reliable tool life across carbon steel, alloy steel, and cast components. Built on a sturdy 90° square negative outline with 8 indexable cutting edges and a dependable 1.2mm corner radius, it delivers maximum productivity and cost-per-edge efficiency under rigorous shop floor conditions.
2. Product Key Features
- NC3030 CVD Coated Grade: Formulated with a tough carbide substrate and an advanced multi-layer CVD coating optimized for general steel machining, providing excellent wear resistance and thermal shock stability.
- -GR Chipbreaker & 1.2mm Radius: Features an optimized wide-groove geometry for high feed rates and deep depths of cut, complemented by a sturdy 1.2mm corner radius to resist edge chipping.
- Double-Sided Indexable Economy: Square negative configuration offers 8 total indexable cutting edges (4 per side), maximizing per-edge cost efficiency.
- Standard Industrial Packaging: Supplied in protective factory containers containing 10 pieces for efficient toolcrib 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 | SNMG190612-GR | SNMG642-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) | 1.2 mm | 0.047 in (~3/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel & Low Alloy Steel (General Machining) | 160 - 300 | 0.35 - 0.70 |
| Alloy Steel & Structural Components | 140 - 260 | 0.40 - 0.75 |
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 SNMG190612-GR NC3030 insert performs exceptionally across diverse industrial turning environments:
- General Mechanical Engineering: Universal turning and roughing of steel shafts, structural plates, and cylindrical components.
- Automotive & Industrial Manufacturing: High-efficiency stock removal for forged or cast automotive and machinery parts.
- Job Shop Production: Versatile application range delivering stable tool life across changing workpiece batches.
5. Compatibility
Engineered to integrate seamlessly with standard ISO negative toolholding systems:
- Toolholders: Fully compatible with standard MSSNR/L, PSBNR/L, and CSBNR/L pin-and-clamp external turning toolholders designed for SNMG 1906 inserts.
- Machine Equipment: Optimized for standard CNC lathes, heavy horizontal turning centers, and automated production lines.
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, alloy steel, and structural steel parts (e.g., C45, 40Cr) | Optimal (Versatile CVD Grade for P15–P35 General Turning) |
| K (Cast Iron) | Gray cast iron and nodular cast iron components | Good (Suitable for Cast Iron Roughing K15–K35) |
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 SNMG190612-GR NC3030 inserts.
Q: What workpiece materials are best suited for the NC3030 grade?
A: NC3030 is engineered primarily for general turning and roughing of carbon steels, alloy steels, and structural steel components.
Q: Which toolholders are compatible with this SNMG 1906 insert?
A: It fits standard ISO negative turning toolholders 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.