Description
CARBIDE TURNING INSERTS SNMA
SNMA carbide turning inserts are double-sided, negative-geometry square inserts featuring a 0° relief (clearance) angle and a 90° included angle. These inserts are designed for medium to heavy roughing and general turning applications, offering high edge strength, excellent stability, and reliable wear resistance. SNMA inserts are ideal for machining cast iron, steel, and other short-chipping materials under demanding cutting conditions.
Made from cemented carbide (WC-Co) and commonly CVD or PVD coated (TiN, TiCN, Al₂O₃, TiAlN), SNMA inserts deliver a strong combination of durability, toughness, and economy, providing consistent performance in heavy-duty operations.
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Key Features
• Shape: Square (S)
• Relief Angle: 0° (negative geometry)
• Cutting Edges: Double-sided – 8 cutting edges per insert
• Included Angle: 90°
• Mounting Type: Clamp or screw-on (compatible with ISO standard toolholders)
• Coatings: CVD or PVD – TiN, TiCN, Al₂O₃, TiAlN (depending on grade)
• Application Type: Heavy roughing, semi-finishing, and general turning
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Materials & Applications
SNMA carbide inserts are used in applications that demand high stability, robustness, and edge strength. The negative geometry provides increased insert thickness and rigidity, making them suitable for interrupted cuts and high-feed operations.
Typical Workpiece Materials:
• Cast Iron (gray and ductile) — excellent for heavy roughing and interrupted cuts
• Steel (carbon and alloy) — suitable for general turning and roughing with high cutting loads
• Stainless Steel — effective with proper grade and coating to resist built-up edge
• Non-Ferrous Metals (limited use) — use uncoated grades if required
Common Operations:
• Heavy roughing and semi-finishing
• General turning and facing
• Interrupted cutting and high-feed operations
• External and internal turning of rigid setups
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Advantages & Performance
• High Edge Strength: Negative geometry and thick insert cross-section provide excellent resistance to chipping and breakage
• Wear Resistance: Advanced CVD or PVD coatings extend tool life in high-temperature, abrasive conditions
• Stable and Reliable: Strong seating and rigid design ensure consistent performance in heavy-duty cuts
• Economical: Double-sided design provides up to 8 cutting edges, reducing cost per edge
• Versatile: Available in multiple chipbreakers and grades for various materials and operations
