Kyocera TPMR110304 CA125P TMK00431

1. Product Overview

The TPMR110304 is a premium-grade Triangle indexable carbide insert manufactured by Kyocera Corporation under the CA125P grade classification. Designed specifically for general turning, medium cutting, this insert combines a high-performance PVD multi-layer coating with a robust fine-grained carbide substrate to deliver exceptional wear resistance, thermal stability, and edge integrity in demanding CNC turning environments.

With an inscribed circle of 11.0 mm, a 3.18 mm thickness, and a 0.4 mm corner radius, the TPMR110304 is optimized for operations requiring stable machining. The integral GP chipbreaker geometry ensures controlled chip formation, reduced cutting forces, and extended tool life—making it the ideal choice for high-precision manufacturing across automotive, aerospace, and general engineering sectors.

2. ISO Designation Breakdown

Every Kyocera insert follows the international ISO 1832 designation system. Below is the complete decode for TPMR110304:

3. Engineering Dimensions & Geometry

All dimensions conform to ISO 1832:2017 tolerances. Critical measurements are verified via CMM (Coordinate Measuring Machine) during final inspection.

4. Grade Details – Key Grade Characteristics

Grade CA125P is a flagship PVD-coated carbide grade from Kyocera’s advanced materials portfolio, engineered for medium to high-speed machining of ferrous materials.

5. Grade Comparison Matrix

Selecting the correct grade is critical for optimizing tool life and surface finish. The matrix below positions CA125P within Kyocera’s steel-turning ecosystem:

6. Chipbreaker Profile

The GP chipbreaker is specifically engineered for general turning, medium cutting. Its unique land-and-groove topology creates a controlled chip curl radius that promotes safe chip evacuation while minimizing burr formation.

• Chip Control: Optimized for short, manageable chips in continuous and light interrupted cuts
• Edge Preparation: Micro-honed T-land (0.05–0.10 mm) for enhanced edge stability at low feeds
• Surface Finish: Designed to achieve Ra 0.4–1.6 µm depending on feed rate and material
• Coolant Compatibility: Performs with emulsion, synthetic, or MQL (Minimum Quantity Lubrication) systems

7. Recommended Applications & Workpiece Materials

The TPMR110304 with grade CA125P excels across a broad spectrum of ferrous materials. Recommended workpiece groups include:

• Carbon Steels: C35, C45, C60 (ISO P25–P35 range)
• Alloy Steels: 4140, 4340, 16MnCr5 (≤ 42 HRC)
• Stainless Steels: 304, 316, 321 (austenitic grades)
• Tool Steels: H13, D2 (pre-hardened condition, ≤ 40 HRC)
• Cast Irons: GG25, GG30 (gray cast iron)

8. Application Map by Operation

9. Recommended Cutting Conditions

Parameters below are starting recommendations. Optimize based on machine rigidity, workpiece condition, and desired productivity:

10. Operating Guidelines

To maximize insert life and maintain dimensional accuracy, observe the following best practices:

• Tool Overhang: Minimize overhang to ≤ 1.5× holder diameter to suppress vibration
• Coolant Delivery: Direct high-pressure coolant (≥ 10 bar) to the cutting zone for stainless steel applications
• Entry Strategy: Use ramp entry or circular interpolation; avoid direct plunge into solid material
• Edge Inspection: Check for flank wear (VB) every 15–20 min of cutting time; replace when VB ≥ 0.3 mm
• Storage: Keep inserts in original packaging until use; avoid humidity > 60% RH
• Mounting Torque: Tighten clamp screw to 2.5–3.5 N·m using a torque wrench; verify seating with dial indicator

11. Toolholder Compatibility

The TPMR110304 is designed for standard ISO toolholders with the following shank and clamp configurations:

• Compatible Holders: STFCR/L, STGCR/L, MTJNR/L, PTJNR/L
• Clamp System: Lever-lock or top-clamp (depending on holder series)
• Shank Sizes: 16×16 mm, 20×20 mm, 25×25 mm (match to insert size for stability)
• Insert Seat: Ensure holder seat is clean and free of burrs; seat angle must match insert relief angle
• Replacement Screw: Use Kyocera genuine Torx® screws (M3.5 or M4.0 depending on insert size)

12. Packaging & Ordering Information

13. Catalog Meta Data

Disclaimer: Cutting parameters and performance data are indicative starting values. Actual results depend on machine condition, workpiece material variance, coolant quality, and operator technique. Always conduct a test cut before full production runs. Kyocera and CA125P are registered trademarks of Kyocera Corporation. Kyotow.com is an authorized distributor of genuine Kyocera industrial cutting tools.