Description

The SECO 03272991 is a solid carbide milling insert carrying the ANSI/ISO designation OFMR070405TR-M15 in the MP2501 grade. This single-sided, octagonal insert is designed for face and shoulder milling operations where consistent edge life and reliable chip control are required. It features a CVD-applied TiCN and Al2O3 Duratomic coating over a fine-grain carbide substrate, providing wear resistance and thermal stability. The M15 chip breaker geometry is paired with a neutral rake angle and T-Land cutting edge style, making it well suited for steel machining at moderate to aggressive feeds. Eight usable cutting edges per insert reduce per-edge tooling cost in production environments.

This insert is intended for use in face milling, shoulder milling, and general-purpose milling applications. Primary workpiece material is steel (ISO material group P), with secondary suitability for stainless steel (M), cast iron (K), and superalloys and titanium (S). It is a right-hand insert and is held in the cutter body by a screw-clamp method. The insert is compatible with the SECO R220.43-07 cutter series. Typical users include CNC machinists, toolroom technicians, and manufacturing shops running ferrous and difficult-to-machine alloy components.

Key Features

Octagonal shape with 8 cutting edges for maximum edge utilization per insert
CVD-applied TiCN and Al2O3 Duratomic coating for wear and heat resistance
Fine-grain solid carbide substrate in MP2501 grade for toughness and edge integrity
M15 chip breaker with T-Land cutting edge and neutral rake for stable steel cutting
Maximum depth of cut of 0.2047 inches with effective cutting edge length of 0.2047 inches
Screw-clamp insert holding method for secure, repeatable seating in the cutter body

Compatibility

Compatible with the SECO R220.43-07 cutter series. Designed for use in cutter bodies accepting OFMR-07 series inserts with an inscribed circle in the range of 0.7000 to 1.0000 inches.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom personnel. Always power down and lock out the machine spindle before seating or removing inserts. Use the correct Torx or hex key as specified by the cutter body manufacturer when tightening the clamping screw do not overtighten, as this can fracture the carbide insert. Inspect the insert pocket and seating surface for chips or debris before installation to ensure full, even contact.

Technical Specifications

ANSI / ISO Code: OFMR070405TR-M15
Insert Style: OFMR
Insert Shape: Octagon
Insert Material: Solid Carbide
Material Grade: Fine Grain
Manufacturer Grade: MP2501
Coating / Finish: TiCN and Al2O3
Coating Classification: Duratomic
Coating Process: CVD
Chip Breaker: M15
Cutting Edge Style: T-Land
Rake: Neutral
Rake Angle: 0 degrees
Relief Angle: 26 degrees
Included Angle: 135 degrees
Insert Hand: Right Hand
Number of Cutting Edges: 8
Single or Double Sided: Single
Insert Holding Method: Screw
Thickness: 0.1913 inches
Thickness Range: 0.1850 to 0.2000 inches
Inscribed Circle: 0.7076 inches
Inscribed Circle Range: 0.7000 to 1.0000 inches
Corner Radius: 0.0197 inches
Maximum Depth of Cut: 0.2047 inches
Cutting Edge Effective Length: 0.2047 inches
Length Range: 0.7000 to 0.9000 inches
Insert Size Code: 070405
Series: OFMR-07
Cutter Series Compatibility: R220.43-07
Primary Workpiece Material: Steel (ISO Code P)
Secondary Workpiece Materials: Stainless Steel (M), Cast Iron (K), Superalloys and Titanium (S)
Standards: ISO
Weight: 0.29 pounds
Package Quantity: 1