ZCC.CT SNMG190612 YBC351 Carbide Turning Inserts for Heavy Steel Roughing
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ZCC.CT SNMG190612 YBC351 Turning Insert
The Ultimate Solution for Heavy Interrupted Steel Machining
Product Overview
"Which carbide insert is most reliable for heavy-duty roughing and interrupted cuts in steel while preventing edge chipping?"
The ZCC.CT SNMG190612 in YBC351 grade is a heavy-weight industrial performer designed for the toughest steel machining environments. Engineered for ISO P30-P40 applications, it excels in roughing where instability, scale, or interrupted cuts are present. The YBC351 grade features a thick CVD coating combined with a high-strength substrate, providing the highest level of impact resistance in the ZCC.CT steel turning lineup.
Core Engineering Advantages
Optimized for interrupted cuts and unstable machining conditions where other grades fail.
The 1.2mm radius and robust edge design handle high feed rates and massive depths of cut (DOC).
Advanced TiN + thick Al2O3 coating offers superior protection against plastic deformation and heat.
Technical Specifications
Square
0° Relief
Tolerance
Hole/Chip
19.05mm IC
6.35mm Thk
1.2mm Rad
| Feature | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Model Designation | SNMG190612 | SNMG643 |
| Inscribed Circle (IC) | 19.05 mm | 0.75 inch |
| Thickness | 6.35 mm | 0.25 inch |
Recommended Cutting Parameters (ISO P)
| Material Sub-Group | Cutting Speed (Vc m/min) | Feed Rate (fn mm/rev) | Depth of Cut (ap mm) |
|---|---|---|---|
| Low Carbon Steel | 120 - 280 | 0.20 - 0.70 | 1.5 - 6.0 |
| Alloy Steel / Tool Steel | 90 - 220 | 0.20 - 0.60 | 1.5 - 5.0 |
Recommended Tool Holders for SNMG 1906 series:
View PSSNR / MSSNR 3232P19 HoldersHeavy-Duty Applications
- Workpiece: Cast steel, forging steel, and large-diameter carbon steel shafts.
- Operations: Heavy roughing, removing mill scale, and severe interrupted cutting.
- Process: Ideal for low-speed, high-torque CNC lathes and manual machines.
Machine Compatibility
Fully compatible with standard ISO tool holders (PSSNR, MSSNR, PSKNR). Engineered to fit 3232 and 4040 shank holders for maximum stability in large-scale machining.
ZCC.CT Grade Matrix (Steel)
| Grade | Cutting Condition | Primary Strength |
|---|---|---|
| YBC151 | High Speed / Finishing | Extreme wear resistance. |
| YBC251 | Universal / Semi-Roughing | General purpose balance. |
| YBC351 (Target) | Heavy Roughing / Interrupted | Maximum impact toughness. |
Global Industrial Feedback
"Unstoppable on Interrupted Cuts"
We machine large forged shafts with heavy scale. The YBC351 grade is the only one that doesn't shatter on impact. Excellent durability.
— James T., USA 🇺🇸"Beste Wahl für Schruppbearbeitung"
Sehr robuste Schneidkante. Perfekt für instabile Maschinenaufbauten.
— Klaus R., Germany 🇩🇪"Value & Performance"
Il miglior inserto per sgrossatura pesante. Rapporto qualità-prezzo imbattibile.
— Luca B., Italy 🇮🇹Professional FAQ
Q: When should I choose YBC351 over YBC251?
A: Choose YBC351 when your application involves severe interrupted cuts, heavy mill scale, or if you are using an unstable machine setup. YBC251 is better for continuous cutting at higher speeds.
Q: What is the benefit of the 1.2mm radius?
A: The 1.2mm (0.047") corner radius provides a much stronger edge than a 0.8mm radius, allowing for higher feed rates and better heat dissipation during heavy roughing.
Q: Can these inserts be used on stainless steel?
A: While primarily designed for ISO P (Steel), YBC351 can handle some austenitic stainless steels in roughing conditions, though we recommend the YBM series for dedicated stainless work.
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.