Kyocera DCMT070202HQ CA525 TAC01810

1. Product Overview

The DCMT070202HQ is a precision-engineered indexable carbide turning insert from Kyocera, featuring the advanced CA525 CVD-coated grade. Designed for roughing to heavy interrupted of steel and steel alloys, this insert delivers exceptional wear resistance, thermal stability, and chip control in demanding CNC machining environments.

With its 55° rhombic geometry, 7° positive clearance angle, and HQ – Heavy Interrupted / Roughing chipbreaker, the DCMT070202HQ is the ideal choice for applications requiring wide and shallow chipbreaker allows smooth chip evacuation, positive land on cutting edge prevents crater wear. Whether you are performing external turning, facing, or internal boring operations, this insert provides consistent, repeatable performance that maximizes productivity and minimizes downtime.

2. ISO Designation Breakdown

Every Kyocera insert is manufactured to strict ISO 1832 standards. The designation DCMT070202HQ encodes the complete geometry and specification profile:

3. Engineering Dimensions & Geometry

The following dimensional data is verified per ISO 13399 and ANSI B212.4 standards:

4. Grade Details – Key Grade Characteristics

The CA525 grade represents Kyocera's advanced CVD coating technology, engineered specifically for general-purpose steel machining. Key characteristics include:

• Coating Architecture: CVD Multi-Layer (TiCN + Al₂O₃ + TiN) – multi-layer structure delivers superior wear resistance and thermal stability.
• Substrate Technology: Special carbide substrate with high-temperature deformation resistance, providing 10% improved high-temperature hardness compared to conventional substrates.
• Interface Optimization: Optimized interface improves film adhesion by 40%, preventing coating delamination under cyclic thermal loads.
• Crystal Structure: High-aspect ratio α-Al₂O₃ micro-columnar crystal structure for enhanced abrasion resistance and prolonged tool life.
• Color Identification: Gold – easy visual identification during tool setup and inventory management.
• Primary Application: Steel (P-class materials): Carbon steel, alloy steel, tool steel, free-cutting steel.

5. Grade Comparison Matrix

Select the optimal grade for your specific machining environment within the CA5 series:

6. Chipbreaker Profile

HQ – Heavy Interrupted / Roughing

Wide and shallow chipbreaker with positive land support. Engineered for heavy interrupted cutting and workpieces with scale or forging skin.

• Wide and shallow chipbreaker allows smooth chip evacuation
• Positive land on cutting edge prevents crater wear
• Reinforced edge geometry resists sudden fracture under shock loads
• Suitable for heavy interrupted cutting and scale machining

7. Recommended Applications & Workpiece Materials

The DCMT070202HQ with CA525 grade is optimized for the following material groups and applications:

• Carbon Steels: C35, C45, C60, S235JR, S355JR – excellent for general structural and shaft machining.
• Alloy Steels: 4140 (42CrMo4), 4340, 8620 – ideal for automotive and aerospace component manufacturing.
• Tool Steels: H13, D2, O1 – suitable for die and mold industry applications.
• Free-Cutting Steels: 11SMn30, 12L14 – optimized for high-speed automatic lathe operations.
• Cast Steel: GS-52, GS-60 – stable performance in general engineering castings.

Note: For stainless steel, cast iron, or non-ferrous applications, refer to Kyocera CA6-series, CA4-series, or PR-series grades respectively.

8. Application Map by Operation

9. Recommended Cutting Conditions

Parameters below are starting recommendations for stable machining with average application conditions. Adjust based on machine rigidity, coolant delivery, and workpiece condition:

Values shown are starting recommendations. For hardened materials (> 45 HRC), reduce Vc by 20–30%. For unstable or long overhang setups, reduce feed by 15–25%.

10. Operating Guidelines

• Coolant Recommendation: Use water-soluble coolant at 6–8% concentration for optimal chip evacuation and thermal management.
• Tool Overhang: Minimize tool overhang to reduce vibration. For internal turning, keep overhang ≤ 4× tool diameter.
• Edge Preparation: This insert features a molded chipbreaker; no additional edge honing is required.
• Entry Strategy: Use ramp entry or arc-in programming to avoid sudden impact on the cutting edge.
• Chip Control: Ensure adequate coolant pressure (≥ 10 bar) for deep-hole applications to prevent chip recutting.
• Insert Change: Replace insert when flank wear (VB) exceeds 0.3 mm or when surface finish degrades noticeably.
• Storage: Store in original packaging away from direct moisture and corrosive environments.

11. Toolholder Compatibility

The DCMT070202HQ is compatible with standard ISO toolholders featuring D, N, Q, or V clamping styles. Recommended holder series:

Important: Ensure the holder pocket angle matches the 7° clearance angle of this insert. Using incorrect holders will result in zero or negative effective rake angles, leading to poor chip control and accelerated wear.

12. Packaging & Ordering Information

• Packaging: Industrial-grade blister pack containing 10 inserts per box. Each insert is individually protected to prevent edge damage during transit.
• Minimum Order Quantity: 1 box (10 pieces).
• MPN / Catalog No.: TAC01810
• ISO Designation: DCMT070202HQ
• Grade: CA525
• Manufacturer Warranty: Full manufacturer warranty against defects in material and workmanship.
• Bulk Orders: Volume pricing available for orders of 50+ boxes. Contact our technical sales team for quotation.

13. Catalog Meta Data

Why Buy from Kyotow.com? We supply 100% genuine Kyocera industrial cutting tools backed by full manufacturer warranty. Every insert is sourced through authorized distribution channels to ensure authenticity, traceability, and consistent performance. Our technical support team is available to assist with grade selection, parameter optimization, and application troubleshooting.