Description
Introduction:
The EKF12R-T insert is engineered for precision machining of miniature and small-diameter components. Its fine-grain carbide substrate provides an optimal balance of hardness and toughness, ensuring reliable edge strength during continuous and light interrupted cuts. Advanced PVD coating enhances wear resistance, thermal stability, and oxidation resistance, extending tool life in demanding machining conditions.
With optimized cutting-edge geometry and positive rake angles, the insert reduces cutting forces and enables stable chip control at low feed rates and shallow depths of cut. Its specialized chipbreaker design minimizes built-up edge (BUE), improves surface finish, and maintains dimensional accuracy, meeting tight tolerance requirements.
EKF12R-T is ideal for medical components, precision electronics, micro-mechanical parts, and automotive small-part production. It delivers stable machining performance, reduces vibration, and enhances process reliability, supporting higher productivity and cost-effective precision turning operations.
- Minimized Cutting Forces and Torque
The EKF12R-T insert features a micro-optimized rake and relief geometry that reduces cutting forces and torque on miniature components. This minimizes tool deflection, preserves dimensional accuracy, and prevents chatter in high-precision turning operations.
- Enhanced Thermal Stability for Micro-Machining
The multi-layer PVD coating combined with substrate heat-treatment enhances thermal resistance, maintaining edge sharpness under localized high-temperature conditions common in small-part turning.
- Optimized Chip Evacuation in Restricted Geometries
EKF12R-T incorporates specialized micro chip breakers and controlled rake angles, facilitating smooth chip evacuation in narrow grooves and complex contours. This reduces built-up edge formation and prevents micro-surface defects.
- High Rigidity for Vibration Suppression
The insert’s reinforced geometry and precision clamping system increase stiffness at the cutting edge. This effectively suppresses micro-vibrations, which is critical for maintaining surface integrity and tolerance on small-diameter components.
- Precision Edge Integrity for Micro-Contours
The EKF12R-T nose radius and edge preparation are engineered to minimize burr formation while maintaining consistent cutting edge strength, enabling reliable finishing of micro grooves, fillets, and intricate profiles.
- Extended Tool Life under High-Speed Conditions
The combination of optimized geometry, coating, and substrate treatment extends tool life during high-speed, small-part turning, reducing downtime and improving production consistency.
Main technical parameters:

|
Type |
INSL | PSIR | S |
W1 |
| EKF12R_-T | 21.5 | 0° | 3 |
8.7 |
|
Type |
Hand | CUTDIA | CW | REL | RER |
| EKF12R100-T | R | 12 | 1.00 | 0.08 |
0.08 |
| EKF12R150-T | R | 12 | 1.50 | 0.08 |
0.08 |
| EKF12R200-T | R | 12 | 2.00 | 0.08 |
0.08 |











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