Description
The SECO 02960779 is a multi-tipped solid carbide turning insert in the TNMG666-MR7 series, designed for negative-rake external and internal turning operations. It carries the TP2501 manufacturer grade and features a Duratomic CVD multilayer coating of TiCN, Al2O3, and Cr for extended tool life under demanding cutting conditions. The triangular insert body provides six cutting edges and a 3/4 inch inscribed circle, while the MR7 chip breaker geometry with a T-Land cutting edge style controls chip flow across a broad range of feed and depth conditions. Corner radius measures 0.0945 inches (3/32 inch nominal). This insert is installed by CNC machinists and turning center operators working in production and job-shop environments.
The 02960779 is suited for back turning, boring, facing, and general turning applications. Its primary target workpiece material is steel, with secondary suitability for stainless steel and cast iron. The MR7 chip breaker geometry and Duratomic coating make it effective across roughing to semi-finishing passes in those material families. Material grades P10, P20, P30, and P35 are covered. Maximum depth of cut reaches 1.0669 inches, supporting a wide range of material removal scenarios from light finishing to aggressive roughing on qualifying setups.
Key Features
- Duratomic CVD coating: TiCN, Al2O3, and Cr multilayer for wear and heat resistance
- Six cutting edges on a 60-degree triangle body for cost efficiency per insert
- MR7 chip breaker with T-Land edge style for chip control across steel and stainless applications
- Negative rake, neutral hand geometry compatible with clamp, pin, and lever lock holding systems
- Maximum depth of cut of 1.0669 inches supports roughing and semi-finishing passes
- Compliant with ANSI and ISO standards; ISO code TNMG330924-MR7
Compatibility
Designed for use in TNMG-style toolholders that accept clamp, pin, or lever lock insert retention. Compatible with setups targeting steel (P10-P35), stainless steel (M-grade), and cast iron (K-grade) workpiece materials as defined by ISO material classification.
Installation Notes
Installation is performed by qualified machinists following machine tool manufacturer guidelines for TNMG insert holders. Power down and lock out the machine before seating or replacing inserts. Verify the insert pocket, shim, and clamping hardware are clean and undamaged before torquing the clamp screw. Do not exceed the toolholder manufacturer’s specified clamping torque or maximum depth of cut for the given setup overhang and workpiece material.
Technical Specifications
- Insert Style: TNMG
- Series: TNMG-MR7
- Industry Standard Number: TNMG666-MR7
- ISO Code: TNMG330924-MR7
- Manufacturer Grade: TP2501
- Material Grade: P10, P20, P30, P35
- Insert Material: Solid Carbide
- Coating: TiCN, Al2O3, Cr (Duratomic CVD)
- Insert Shape: Triangle (60 degrees)
- Number of Cutting Edges: 6
- Inscribed Circle: 3/4 inch (0.7500 inches)
- Corner Radius: 3/32 inch (0.0945 inches)
- Insert Thickness: 3/8 inch (0.3748 inches)
- Insert Length: 1.2992 inches
- Hole Diameter: 0.3118 inches
- Maximum Depth of Cut: 1.0669 inches
- Rake: Negative
- Insert Hand: Neutral
- Clearance Code: N
- Tolerance Code: M
- Chip Breaker: MR7
- Cutting Edge Style: T-Land
- Insert Holding Method: Clamp, Pin, Lever Lock
- Primary Workpiece Material: Steel (P)
- Secondary Workpiece Material: Stainless Steel (M), Cast Iron (K)
- Multi-Use Application: Back Turning, Boring, Facing, Turning
- Coating Process: CVD
- Standards: ANSI, ISO
- Package Quantity: 1
- Weight: 0.13 pounds
- Height: 0.7 inches
- Width: 6 inches
- Length: 2.75 inches
Standard Information
- Brand: SECO
- Manufacturer Part Number: 02960779
