KORLOY SNMM190612-GH NC3120 Indexable Carbide Turning Inserts | SNMM644-GH (ANSI Equivalent) CVD Coated Inserts for Heavy-Duty Steel Roughing - 10pcs/box
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KORLOY SNMM190612-GH NC3120 Indexable Carbide Turning Inserts | SNMM644-GH (ANSI Equivalent) CVD Coated Inserts for Heavy-Duty Steel Roughing - 10pcs/box
High-Performance ISO-Standard 90° Square Negative Indexable Roughing Cutters Featuring NC3120 CVD Coating and GH Positive Chipbreaker for Extreme Steel Machining
1. Product Overview
"Which indexable turning insert offers maximum edge strength and fracture resistance when performing heavy roughing and interrupted cutting on carbon steels and alloy steels?" CNC programmers and manufacturing shop managers routinely specify the KORLOY SNMM190612-GH NC3120. This industrial-grade roughing insert combines a tough NC3120 CVD-coated carbide grade with a robust -GH double-sided roughing chipbreaker geometry, delivering exceptional thermal shock resistance, heavy depth-of-cut capability, and long tool life. Featuring a 90° square negative design with 8 usable cutting edges and a rugged 1.2mm corner radius, it ensures maximum productivity in demanding high-removal-rate machining environments.
2. Product Key Features
- NC3120 CVD Coated Grade: Engineered with a robust multi-layer Chemical Vapor Deposition (CVD) coating designed to withstand extreme thermal loads and abrasive wear during high-volume steel roughing.
- GH Roughing Chipbreaker & 1.2mm Radius: Features an optimized positive-land geometry for high-feed roughing, providing smooth chip breaking and high edge strength supported by a sturdy 1.2mm corner radius.
- Double-Sided Edge Economy: Square negative configuration provides 8 total indexable cutting edges (4 per side), maximizing cost efficiency per edge.
- Standard Industrial Packaging: Delivered in protective factory boxes containing 10 pieces for secure inventory control.
3. Technical Specifications & Model Breakdown
Examine the comprehensive technical parameters, metric-imperial dimensional cross-references, and ISO nomenclature code breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | SNMM190612-GH | SNMM644-GH |
| 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 (e.g., 1045, 4140) | 150 - 280 | 0.30 - 0.65 |
| Cast Steel & Heavy Forgings | 120 - 220 | 0.25 - 0.55 |
Need matching DSSNR or PSBNR heavy-duty external turning toolholders for your SNMM 1906 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY SNMM190612-GH NC3120 insert is engineered for heavy roughing and aggressive stock removal:
- Large Shaft Roughing: Aggressive metal removal on heavy steel forgings, marine shafts, and large industrial rolls.
- Oil & Gas Components: Rough turning thick-walled drill collars, casing heads, and heavy tubular components.
- Interrupted Cut Machining: Handling surface scale, weldments, and forged steel parts with intermittent shock loads.
5. Compatibility
Designed to integrate seamlessly with heavy-duty ISO negative toolholding systems:
- Toolholders: Fully compatible with DSSNR/L, PSBNR/L, and CSBNR/L heavy-duty pin-and-clamp external turning tool holders configured for SNMM 1906 geometry.
- Machine Equipment: Built for high-horsepower heavy CNC lathes, vertical turning lathes (VTLs), and rigid production turning centers.
6. Material Comparison & Workpiece Matrix
Review grade applicability across standard ISO workpiece classifications to ensure correct tool selection.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, and structural steel castings (e.g., 4140, 1045) | Outstanding (Optimized CVD Grade for P20–P40 Heavy Roughing) |
| K (Cast Iron) | Ductile iron and grey cast iron components | Suitable (Good Thermal Wear Resistance for K15–K30 Turning) |
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 packaged in a single box?
A: Each standard factory box contains exactly 10 pieces of SNMM190612-GH NC3120 inserts.
Q: Is this insert suitable for interrupted cuts and forgings with scale?
A: Yes, the combination of the tough NC3120 CVD substrate and the robust -GH roughing chipbreaker provides excellent shock resistance against surface scale and interrupted cuts.
Q: Which tool holders fit this SNMM 1906 insert?
A: It fits heavy-duty ISO negative turning tool holders designed for SNMM 1906 inserts, such as DSSNR or PSBNR systems.
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
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.