KORLOY DNMG110408-HM NC3120 Indexable Carbide Turning Inserts | DNMG332-HM NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for General Steel & Alloy Turning - 10pcs/box
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KORLOY DNMG110408-HM NC3120 Indexable Carbide Turning Inserts | DNMG332-HM NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for General Steel & Alloy Turning - 10pcs/box
High-Performance ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring NC3120 Versatile CVD Coated Substrate and -HM Chipbreaker for Superior Carbon Steel and Alloy Steel Machining
1. Product Overview
"Which indexable turning insert provides the ideal balance of toughness and wear resistance for general to medium turning of carbon and alloy steels across continuous and interrupted cuts?" Manufacturing engineers and CNC machinists consistently rely on the KORLOY DNMG110408-HM NC3120. This industrial-grade cutting insert merges KORLOY's versatile NC3120 multi-layer CVD coated carbide grade with a double-sided positive -HM chipbreaker geometry. Based on a 55° rhombic negative platform featuring a 4.76mm thickness ('04') and a robust 0.8mm corner radius, it delivers outstanding edge strength, predictable wear progression, and reliable chip breaking under diverse machining conditions.
2. Product Key Features
- NC3120 Versatile CVD Grade: Engineered with a balanced multi-layer CVD coating optimized for wide-range steel turning, offering high fracture toughness and thermal shock resistance.
- -HM Chipbreaker & 0.8mm Radius: Features a wide groove design for stable chip control at medium-to-heavy feeds, combined with a 0.8mm corner radius for enhanced edge durability and smooth surface generation.
- Robust 4.76mm Thickness: Standardized '04' thickness provides high mechanical stability and resistance to cutting forces during aggressive roughing passes.
- Factory Sealed Box Packaging: Supplied in authentic KORLOY protective packaging containing 10 precision indexable inserts.
3. Technical Specifications & Model Breakdown
Examine the technical specifications, metric-to-imperial equivalents, and ISO coding designation breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | DNMG110408-HM NC3120 | DNMG332-HM NC3120 |
| Inscribed Circle (IC) | 11.6 mm | 0.375 in (3/8") |
| Insert Thickness (S) | 4.76 mm | 0.1875 in (3/16") |
| Corner Radius (r) | 0.8 mm | 0.0315 in (~1/32") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steels & Low Alloy Steels (P Series) - General Turning | 160 - 280 | 0.15 - 0.40 |
| Alloy Steels & Cast Steel (P Series) - Medium Roughing | 130 - 230 | 0.18 - 0.45 |
Looking for robust external turning toolholders or boring bars designed for secure DNMG 1104 insert clamping?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG110408-HM NC3120 insert excels across a wide variety of industrial turning applications:
- General Mechanical Engineering: Medium roughing and general turning of structural carbon steels and alloy steel shafts.
- Oil & Gas Equipment: Machining heavy-duty drill collars, couplings, and forged alloy steel pipe components.
- Industrial Machinery Maintenance: Reliable stock removal on varied steel workpieces requiring high edge toughness and impact resistance.
5. Compatibility
Engineered to integrate seamlessly with standard ISO negative turning toolholders:
- Toolholders: Fully compatible with ISO standard DDJNR/L, MDJNR/L, and PDJNR/L external turning toolholders and internal boring bars configured for 1104 inserts.
- Machine Equipment: Suited for conventional CNC lathes, heavy-duty turning centers, and production machining lines.
6. Material Comparison & Workpiece Matrix
Evaluate grade appropriateness across ISO workpiece material categories for general steel turning operations.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steels, alloy steels, free-cutting steels (1045, 4140, 8620) | Optimal (General to Medium Turning CVD Grade P20–P40) |
| K (Cast Iron) | Gray cast iron, ductile iron (Secondary application) | Effective (Conditional Light Machining) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch quality and dependable cutting performance.
Fast Global Logistics
Comprehensive inventory prepared for immediate dispatch through established international logistics networks to prevent shop downtime.
Technical Expertise
Supported by experienced tooling specialists ready to assist with feed/speed optimization and process troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are contained in a standard factory box?
A: Each original factory box contains exactly 10 pieces of DNMG110408-HM NC3120 inserts.
Q: What distinguishes the NC3120 grade from high-speed finishing grades?
A: NC3120 is engineered with a tougher substrate and balanced CVD coating tailored for general-purpose turning and medium roughing where edge toughness is critical.
Q: Are these indexable inserts fully compatible with standard ISO and ANSI toolholders?
A: Yes, they are manufactured strictly to ISO and ANSI international standards to ensure secure seating in any standard negative turning holder.
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.