Seco 02960891 VBMT331-F1 TP2501 Turning Insert Diamond 35

Product Description

The SECO 02960891 is a solid carbide turning insert in the VBMT-F1 series, designed for precision metal cutting in CNC and manual lathe operations. It carries the VBMT331-F1 industry standard designation and is manufactured to ANSI and ISO tolerances. The insert features a CVD-applied Duratomic multilayer coating consisting of TiCN, Al2O3, and Cr, which promotes wear resistance and thermal stability during continuous and interrupted cuts. With a 35-degree diamond shape, a 3/8-inch inscribed circle, and a 1/64-inch corner radius, this insert is suited for fine-to-medium finishing and profiling work. It is installed by CNC machinists and tool-and-die professionals working with turning centers and engine lathes.

This insert is optimized for primary use on steel workpieces and is rated for secondary use on stainless steel and cast iron. The F1 chip breaker geometry and sharp cutting edge style make it well suited for back turning, facing, profiling, and general turning operations. Its positive rake geometry reduces cutting forces, which helps when machining difficult-to-hold or thin-walled parts. The TP2501 grade aligns with material grades P10, P20, P30, and P35, covering a range from light finishing to moderate roughing in steel applications.

Key Features

• CVD Duratomic multilayer coating: TiCN, Al2O3, and Cr for extended tool life
• 35-degree diamond insert shape with positive rake for reduced cutting forces
• F1 chip breaker geometry supports finishing and profiling passes
• 2 cutting edges per insert; screw-mounted for secure tool holding
• Neutral hand orientation for use in standard right-hand turning setups
• Compatible with back turning, facing, profiling, and turning operations

Compatibility

Designed as an OEM-style replacement insert for toolholders accepting VBMT-style inserts per ANSI and ISO standards. The ISO designation for this insert is VBMT160404-F1.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the spindle before changing inserts. Seat the insert fully in the pocket and torque the clamping screw according to the toolholder manufacturer specifications. Inspect the insert pocket for chips or debris before seating to ensure accurate positioning and prevent premature edge failure.