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

1. Mount into a compatible SNMX square cutter body size 12.7 mm.
2. Tighten with correct torque following body manufacturer guidelines.
3. Begin with moderate cutting parameters – adjust according to material and machine rigidity.
4. Inspect insert and rotate edges before wear becomes critical.
5. 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.