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Wear Resistant Small Parts Turning Insert Suitable for High-Speed CNC Lathe Operations

EKF12R-T Insert for Small Diameter Segment Turning

Insert Shape: E, “E” designates a proprietary diamond-style turning insert geometry optimized for small-part precision turning.

  • Suitable for small diameter turning
  • Allows better tool clearance in narrow spaces

Relief Angle: K, “K” represents a positive clearance and positive rake design for light cutting applications.

  • Educes cutting force
  • Minimizes vibration

Tolerance Class: F, “F” indicates a high-precision tolerance class insert.

  • Tight thickness tolerance
  • Accurate indexing

CUTDIA: 12, 12mm

Cutting Direction: R, “R” indicates a right-hand cutting insert.

  • Standard direction in CNC turning
  • Used for right-to-left feed

Chipbreaker Geometry: T, “T” defines a specific chipbreaker design optimized for small-part finishing.

  • Shallow chip groove
  • Narrow cutting land

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.

  1. 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.

  1. 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.

  1. 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.

  1. 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.

  1. 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.

  1. 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 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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