Description
The SECO 00041376 is an uncoated solid carbide turning insert in the CNMG series, designed for high-performance material removal on superalloys and titanium. It carries an 80-degree diamond insert shape with a 0.5-inch inscribed circle and a 1/16-inch corner radius. The MR4 chip breaker geometry pairs with a T-Land cutting edge style to manage chip flow and edge integrity when cutting demanding workpiece materials. This is a neutral-hand insert with four cutting edges and a negative rake, making it a versatile choice for licensed machinists and toolroom technicians working with difficult-to-machine alloys.
This insert is intended for use in boring, facing, and turning operations, primarily on superalloys and titanium (ISO material code S), with secondary suitability for ISO material codes M, K, N, and H. It follows the ANSI and ISO CNMG standard, with the ISO code designation CNMG120416-MR4. Typical applications include production turning and finishing passes on aerospace and high-temperature alloy components where edge wear resistance and thermal stability are critical. The insert mounts via clamp, pin, or lever lock toolholders compatible with the CNMG form factor.
Key Features
- Uncoated solid carbide substrate in material grades S10, S20, and S30 for superalloy and titanium cutting
- MR4 chip breaker with T-Land cutting edge style for controlled chip formation on tough materials
- Four usable cutting edges with neutral hand orientation for flexible setup
- 80-degree diamond insert shape (shape code C) with negative rake geometry
- Maximum depth of cut of 0.4449 inches with a 0.5-inch inscribed circle diameter
- Compatible with clamp, pin, and lever lock holding methods
- Multi-use design supports boring, facing, and turning in a single insert style
Compatibility
Conforms to ANSI and ISO CNMG standards; ISO designation CNMG120416-MR4, industry standard number CNMG434-MR4. Fits CNMG-compatible toolholders that accept clamp, pin, or lever lock insert holding. Suitable for toolholders designed for the CNMG434 insert size code.
Installation Notes
Installation is performed by qualified machinists or toolroom technicians familiar with indexable insert toolholder systems. Ensure the machine spindle is fully stopped and all power is locked out before indexing or replacing inserts. Seat the insert firmly against the toolholder pocket locating surfaces and verify clamp or lever lock engagement before resuming cutting. Follow the toolholder manufacturer specifications for clamping torque and insert seating procedure.
Technical Specifications
- Insert Style: CNMG
- Series: CNMG-MR4
- ISO Code: CNMG120416-MR4
- Industry Standard Number: CNMG434-MR4
- Insert Shape: Diamond 80 (Shape Code C)
- Included Angle: 80 degrees
- Insert Material: Carbide
- Manufacturer Grade: 883
- Material Grade: S10, S20, S30
- Coating: Uncoated (Bright)
- Chip Breaker: MR4
- Cutting Edge Style: T-Land
- Rake: Negative
- Insert Hand: Neutral
- Number of Cutting Edges: 4
- Inscribed Circle: 0.5000 inches (12.70 mm)
- Corner Radius: 0.0630 inches (1/16 inch)
- Insert Thickness: 0.1874 inches (3/16 inch)
- Insert Length: 0.5079 inches
- Width: 0.5000 inches
- Hole Diameter: 0.2028 inches
- Maximum Depth of Cut: 0.4449 inches
- Relief Angle: 0 degrees
- Clearance Code: N
- Tolerance Code: M
- Insert Holding Method: Clamp, Pin, Lever Lock
- Primary Workpiece Material: Superalloys and Titanium (Code S)
- Secondary Workpiece Material Codes: M, K, N, H
- Applications: Boring, Facing, Turning
- Standards: ANSI, ISO
- Insert Size Code: 434
- Wiper Edge: No
- Full Radius: No
- UNSPSC Code: 23242105
- Package Quantity: 1
- Minimum Order Quantity: 10
Standard Information
- Brand: SECO
- Manufacturer Part Number: 00041376
