WALTER SNMX120520-F57 WKP25S （10pcs） Square Milling Insert
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WALTER SNMX120520-F57 WKP25S Square Milling Insert
The WALTER SNMX120520-F57 WKP25S is a premium square milling insert designed for high-demand steel (P) and cast-iron (K) applications. Featuring a negative rake design and F57 chip-breaker, this insert delivers consistent performance, long tool life, and high stability.
Key Specifications
- Style: SNMX
- Inscribed Circle: 12.70 mm (½″)
- Thickness: 0.252″ (~6.40 mm)
- Corner Radius: 5/64″ (~2.0 mm)
- Rake: Negative
- Chip-Breaker Code: F57
- Grade: WKP25S
- Coating: TiCN + Al₂O₃ + TiCN
- Shape: Square, 90°
- Hole Diameter: 6.1 mm
Features & Benefits
- Highly wear-resistant multilayer coating for extended tool life.
- Tough grade (WKP25S) for demanding milling in steel and cast iron.
- Stable cutting performance due to negative rake design.
- Cost-efficient: up to 4 cutting edges per insert.
- Versatile for shoulder, face, and rough milling.
Recommended Applications
Perfect for medium to heavy milling operations on steel and cast iron using CNC machining centers or milling machines.
Mounting & Handling Instructions
- Mount into a compatible SNMX square cutter body size 12.7 mm.
- Tighten with correct torque following body manufacturer guidelines.
- Begin with moderate cutting parameters – adjust according to material and machine rigidity.
- Inspect insert and rotate edges before wear becomes critical.
- Use coolant or cutting fluid where appropriate to control heat and chip formation.
Ordering & Packaging
Available in packaging from trusted suppliers.
Quality & Origin
Manufactured by WALTER (Germany), this insert meets strict quality standards and is suitable for industrial applications.
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.