Product Description
The SECO 02419639 is a DNMG432-MR3 series indexable turning insert manufactured from solid carbide with a multilayer TiAlN and TiN PVD coating in the CP500 grade. It features a 55-degree diamond shape, neutral hand orientation, a 0.5000-inch inscribed circle, and a 1/32-inch (0.0315-inch) corner radius. The MR3 chip breaker geometry uses a chamfered and honed cutting edge style with a negative rake angle. With four cutting edges per insert, it delivers consistent performance in turning, facing, boring, and back-turning operations. Licensed machinists and CNC turning specialists are the primary installers of this insert in production and job-shop environments.
This insert is engineered primarily for stainless steel (ISO material code M) and is also rated for steel (P), cast iron (K), and super-alloys and titanium (S). It is suited for both roughing and semi-finishing passes across those material groups, covering material grades M10, M20, and M30. The ANSI industry standard number is DNMG432-MR3 and the ISO code is DNMG150408-MR3. Typical applications include external turning, facing, and internal boring on CNC lathes and turning centers where a clamp, pin, or lever-lock toolholder accepts the DNMG insert style.
Key Features
- CP500 grade with multilayer TiAlN and TiN PVD coating for extended tool life on stainless steel and steel
- MR3 chip breaker with chamfered and honed cutting edge for controlled chip formation and edge stability
- Four cutting edges per insert (multi-tipped) maximize cost-per-edge value
- Negative rake, 0-degree relief angle (clearance code N, tolerance code M) for rigid, chatter-resistant cuts
- Compatible with clamp, pin, and lever-lock holding methods for broad toolholder compatibility
- Rated for turning, facing, boring, and back-turning operations on a single insert style
Compatibility
Designed for use in DNMG-style toolholders that accept a clamp, pin, or lever-lock holding method. Compatible with toolholders conforming to ANSI and ISO DNMG insert standards. Verify toolholder pocket dimensions against the 0.5000-inch inscribed circle and 3/16-inch insert thickness before installation.
Installation Notes
Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified clamp screw to seat the insert firmly in the pocket without over-torquing the clamp screw. Inspect the insert pocket and seating surface for chips or debris before installing a fresh edge.
Technical Specifications
- Manufacturer Grade: CP500
- Insert Style: DNMG
- Insert Shape: Diamond 55
- Included Angle: 55 degrees
- Insert Hand: Neutral
- Rake: Negative
- Clearance Code: N
- Tolerance Code: M
- Inscribed Circle: 0.5000 inches
- Corner Radius: 0.0315 inches (1/32 inch)
- Insert Thickness: 0.1874 inches (3/16 inch)
- Insert Length: 1.2204 inches
- Hole Diameter: 0.2028 inches
- Maximum Depth of Cut: 0.5787 inches
- Number of Cutting Edges: 4
- Chip Breaker: MR3
- Cutting Edge Style: Chamfered and Honed
- Coating: TiAlN and TiN
- Coating Process: PVD
- Coating Classification: Multilayer PVD
- Insert Material: Carbide
- Insert Holding Method: Clamp, Pin, Lever Lock
- Primary Workpiece Material: Stainless Steel (M)
- Secondary Workpiece Materials: Steel (P), Cast Iron (K), Super-alloys and Titanium (S)
- Material Grade: M10, M20, M30
- Multi-Use Application: Back Turning, Boring, Facing, Turning
- ANSI Industry Standard Number: DNMG432-MR3
- ISO Code: DNMG150408-MR3
- Standards: ANSI, ISO
- UNSPSC Code: 23242105
- Weight: 0.02 pounds
- Package Quantity: 1
- Minimum Order Quantity: 10
Standard Information
- Brand: SECO
- Manufacturer Part Number: 02419639
