ZCC.CT SNMM250724 YBD151 Carbide Turning Inserts for Cast Iron Machining
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ZCC.CT SNMM250724 YBD151 Turning Insert
Engineered for Maximum Material Removal in Heavy Cast Iron Machining
Product Overview
"Which CNC insert is best for high-speed roughing of ductile and grey cast iron on heavy-duty lathes?"
The ZCC.CT SNMM250724 in YBD151 grade is a specialized industrial tool built for ISO K (Cast Iron) applications. While standard inserts fail under the abrasive nature of cast iron, the YBD151 grade features a thick, highly textured CVD coating that resists flank wear even at extreme cutting speeds. The SNMM geometry is a heavy-duty roughing chipbreaker designed for high feed rates and large depths of cut, making it the primary choice for large-scale industrial manufacturing.
Key Features & Performance
Optimized CVD coating specifically prevents the rapid edge degradation typical when machining grey and ductile iron.
Designed for heavy roughing with an ultra-strong cutting edge that handles high mechanical loads without chipping.
The 2.4mm corner radius facilitates massive metal removal rates and high feed capability while maintaining edge integrity.
Technical Specifications
Square
0° Relief
Tolerance
Heavy Chip
25.4mm IC
7.94mm Thick
2.4mm Rad
| Standard | Metric Model | Imperial Model |
|---|---|---|
| ISO/ANSI | SNMM250724 | SNMM856 |
| Inscribed Circle | 25.4 mm | 1.00 inch |
| Thickness | 7.94 mm | 0.313 inch |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc m/min) | Feed Rate (fn mm/rev) | Depth of Cut (ap mm) |
|---|---|---|---|
| Grey Cast Iron (GG) | 200 - 400 | 0.40 - 1.20 | 2.0 - 10.0 |
| Ductile Iron (GGG) | 150 - 300 | 0.35 - 1.00 | 2.0 - 9.0 |
Industrial Applications
- Energy Sector: Machining large turbine housings and wind power components.
- Automotive: Heavy roughing of large engine blocks and brake drums.
- Machine Tool: Construction of heavy industrial bases and columns.
Machine Compatibility
Fits all standard heavy-duty ISO turning holders with a 25.4mm IC pocket. Optimized for massive machines (e.g., vertical borers and large CNC horizontal lathes) with high rigidity and high torque spindle power.
ZCC.CT Cast Iron Grade Matrix
| Grade | Machining Type | Main Feature |
|---|---|---|
| YBD151 (Target) | High Speed / Roughing | Top Flank Wear Resistance |
| YBD152 | General Purpose | Versatile Speed/Feed Balance |
| YBD252 | Interrupted Roughing | High Impact Toughness |
What Pro Machinists Say
"The Beast for Cast Iron"
We run these on 25" vertical lathes for brake housings. The metal removal rate is insane. YBD151 just keeps going where others melt.
— Thomas J., USA 🇺🇸"Unglaubliche Standzeit"
Sehr gute Verschleißfestigkeit bei GGG50. Die beste Wahl für große Bauteile.
— Klaus W., Germany 🇩🇪"Quality for the Price"
Heavy duty milling and turning in Japan requires reliability. ZCC.CT YBD151 delivers consistently.
— Kenji T., Japan 🇯🇵Expert FAQ
Q: Why use SNMM instead of SNMG for roughing?
A: The SNMM chipbreaker is engineered specifically for heavy metal removal. It has a stronger edge prep and a wider chip pocket to prevent chip jams during high-depth cuts (up to 10mm).
Q: Is YBD151 suitable for dry cutting?
A: Yes, in cast iron, dry cutting is common. YBD151's thick Al2O3 coating provides an excellent thermal barrier to keep the heat in the chip and out of the insert.
Q: What is the maximum feed rate for this insert?
A: Depending on the rigidity of your setup, you can push the SNMM250724 up to 1.2 mm/rev in grey cast iron. Always ensure the holder and machine have sufficient torque.
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.