Product Description
The SECO 03273982 is a VNMG332-MF4 indexable turning insert designed for precision metal cutting on CNC lathes and turning centers. Manufactured from solid carbide and coated with a CVD-applied TiCN and Al2O3 Duratomic multilayer coating, this insert delivers wear resistance and thermal stability under demanding cutting conditions. It features a 35-degree diamond insert shape, a 3/8-inch inscribed circle, a 1/32-inch corner radius, and four usable cutting edges. The MF4 chip breaker geometry is engineered for controlled chip formation during finishing and medium-duty turning operations. Machinists and CNC operators working in production shops and job shops will find this insert well suited to high-volume turning cycles.
This insert is primarily intended for turning, facing, profiling, and back turning of stainless steel and steel workpieces. The VNMG series negative-rake geometry and chamfered-and-honed cutting edge style make it appropriate for medium to rough finishing passes where edge stability and coating durability are priorities. It holds a neutral hand designation, making it usable in standard right-hand turning applications without a dedicated handedness requirement. The insert seats in VNMG-compatible toolholders using clamp, pin, or lever-lock holding methods.
Key Features
- CVD Duratomic TiCN and Al2O3 multilayer coating for extended tool life on stainless and steel
- MF4 chip breaker geometry optimized for finishing and medium turning operations
- Four cutting edges per insert for cost-effective indexing
- Chamfered and honed cutting edge style for edge strength and reduced built-up edge
- Negative rake, neutral hand compatible with standard VNMG right-hand toolholders
- Rated for back turning, facing, profiling, and turning in a single insert grade
Compatibility
Designed for use in VNMG-style toolholders accepting clamp, pin, or lever-lock insert retention. Primary workpiece materials are stainless steel (ISO material code M) and steel (ISO material code P). ISO designation VNMG160408-MF4. Conforms to ANSI and ISO insert standards.
Installation Notes
Installation is performed by qualified CNC machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench and manufacturer-specified fastener when seating the clamp or lever-lock screw to avoid insert cracking or rocking. Inspect the insert pocket and seating surfaces for chips or debris before installing a new edge.
Technical Specifications
- Insert Style: VNMG
- Industry Standard Number: VNMG332-MF4
- ISO Code: VNMG160408-MF4
- Manufacturer Grade: TM2501
- Insert Material: Carbide
- Insert Shape: Diamond 35
- Insert Shape Code: V
- Included Angle: 35 degrees
- Inscribed Circle: 3/8 inch (0.3750 inches)
- Corner Radius: 1/32 inch (0.0315 inches)
- Insert Thickness: 3/16 inch (0.1874 inches)
- Insert Length: 1.3078 inches
- Hole Diameter: 0.1500 inches
- Maximum Depth of Cut: 0.5760 inches
- Number of Cutting Edges: 4
- Cutting Edge Style: Chamfered and Honed
- Chip Breaker: MF4
- Coating: TiCN, Al2O3, Cr (Duratomic)
- Coating Process: CVD
- Rake: Negative
- Rake Angle: 30 degrees
- Relief Angle: 0 degrees
- Clearance Code: N
- Tolerance Code: M
- Insert Hand: Neutral
- Insert Holding Method: Clamp, Pin, Lever Lock
- Primary Workpiece Material: Stainless Steel (Code M)
- Secondary Workpiece Material: Steel (Code P)
- Material Grade: M25, M30, M35
- Multi-Use Application: Back Turning, Facing, Profiling, Turning
- Wiper Edge: No
- Full Radius: No
- Standards: ANSI, ISO
- Package Quantity: 1
- Minimum Order Quantity: 5
- Weight: 0.02 pounds
- Width: 1.97 inches
- Height: 0.55 inches
- Length: 4.33 inches
Standard Information
- Brand: SECO
- Manufacturer Part Number: 03273982
