DNMM150408PX CA025P TMH00205 Turning Insert - High-speed turning

Product Overview

The DNMM150408PX from Kyocera is a premium indexable turning insert engineered for high-precision CNC machining applications. Featuring the advanced CA025P cermet grade with PVD Coated, this insert delivers exceptional wear resistance, superior surface finish quality, and extended tool life in steel machining operations. The Optimized chipbreaker for high-speed machining ensures optimal chip control and reliable performance across a wide range of cutting conditions.

Designed for professional machinists and manufacturing facilities, this turning insert combines cutting-edge material science with precision engineering to maximize productivity and minimize downtime. Whether you're performing finish turning, general machining, or high-speed production runs, the DNMM150408PX provides the consistency and reliability your operations demand.

ISO Designation Breakdown

Understanding the ISO designation helps you select the right insert for your specific application:

Engineering Dimensions & Geometry

Precision manufacturing ensures consistent performance and reliable tool life:

Note: All dimensions conform to ISO 1832 standards for indexable inserts.

Grade Details - Key Grade Characteristics

The CA025P grade represents Kyocera's advanced cermet technology, offering a unique combination of properties:

• Substrate: Cermet - Provides excellent hardness and chemical stability at elevated temperatures
• Coating: PVD Coated - Enhances wear resistance and reduces friction for improved chip flow
• Color Identification: Gold - Easy visual identification in tool crib management
• Hardness Level: High - Maintains cutting edge integrity under demanding conditions
• Wear Resistance: Excellent - Extended tool life reduces changeover frequency and tooling costs
• Surface Finish Capability: Mirror finish capability - Achieves Ra values as low as 0.4 μm in optimal conditions

Key Performance Benefits: High wear resistance, excellent surface finish, stable cutting edge. This grade is particularly effective in high-speed finishing operations where surface quality is critical, as well as in medium-duty general turning applications requiring consistent performance over extended cutting periods.

Grade Comparison Matrix

Comparing CA025P with alternative grades helps optimize your tooling selection:

Chipbreaker Profile

The PX chipbreaker is specifically designed for high-feed turning:

• Profile Type: Optimized chipbreaker for high-speed machining
• Primary Application: High-speed turning, productivity focus
• Chip Control: Excellent curl and break characteristics for reliable chip evacuation
• Rake Angle: Optimized for balanced cutting forces and heat dissipation
• Edge Preparation: T-land or honed edge for enhanced edge stability

This chipbreaker geometry ensures controlled chip formation across the recommended feed and speed ranges, preventing chip nesting and protecting both the insert and workpiece surface from damage.

Recommended Applications & Workpiece Materials

The DNMM150408PX excels in the following applications:

• Steel Machining: Carbon steels, alloy steels, and tool steels up to 45 HRC
• Stainless Steel: Austenitic and martensitic grades (304, 316, 410, 420 series)
• Cast Iron: Gray cast iron (GG20-GG30) and ductile iron (GGG40-GGG50)
• Finish Turning: Achieving mirror surface finishes (Ra 0.4-0.8 μm)
• General Turning: Medium-duty continuous and light interrupted cuts
• High-Speed Machining: Productivity-focused operations with stable setups

Application Map by Operation

Understand where this insert performs best in your machining workflow:

Recommended Cutting Conditions

Optimize your machining parameters for maximum performance and tool life:

Important: These values are starting recommendations. Always optimize based on your specific machine rigidity, workpiece condition, and coolant application. Reduce speeds by 15-20% for interrupted cuts or less rigid setups.

Operating Guidelines

Follow these best practices to maximize insert performance and longevity:

• Tool Overhang: Minimize overhang to reduce vibration and improve surface finish. Use the shortest possible toolholder.
• Coolant Application: High-pressure coolant (70+ bar) is recommended for chip evacuation, especially in internal turning. Ensure coolant reaches the cutting edge directly.
• Insert Seating: Clean the toolholder pocket thoroughly before insert change. Ensure full contact between insert bottom and holder seat.
• Clamping Force: Apply recommended torque to clamping screw (typically 3.5-4.5 Nm for M3.5 screws). Over-tightening can cause insert cracking.
• Edge Inspection: Check for uniform wear patterns. Flank wear (VB) should not exceed 0.3 mm for roughing or 0.15 mm for finishing.
• Workpiece Preparation: Ensure adequate stock allowance and consistent machining allowance. Avoid scale and hard surfaces when possible.
• Speed Ramp-Up: When testing new parameters, start at the lower end of the recommended range and increase gradually while monitoring tool wear and surface finish.

Toolholder Compatibility

Ensure proper toolholder selection for safe and effective machining:

Always verify toolholder specifications in the manufacturer's catalog. Use genuine Kyocera toolholders for optimal performance and safety.

Packaging & Ordering Information

• Packaging: Each insert is individually packed in protective plastic cases to prevent edge damage during transport and storage.
• Minimum Order Quantity: 10 pieces (1 pack)
• Standard Pack Size: 10 inserts per pack
• Storage: Store in original packaging in a dry environment (humidity < 60%). Avoid temperature fluctuations that could cause condensation.
• Handling: Handle inserts with care. Never drop or stack inserts loosely. Use soft-tipped tweezers for insert changes.
• Traceability: Each pack includes batch number and manufacturing date for full traceability and quality control.

Catalog Meta Data

Technical reference information for procurement and inventory management:

Quality Assurance: All Kyocera products are manufactured in ISO 9001 certified facilities and undergo rigorous quality control testing. This insert is backed by Kyocera's commitment to excellence in cutting tool technology.