Kyocera DCMT070208HQ CA510 TAA01812

Product Overview

The DCMT070208HQ CA510 TAA01812 is a premium turning insert manufactured by Kyocera in Japan. Designed for high-performance CNC turning operations, this rhombic 55° insert delivers exceptional dimensional accuracy, superior surface finish, and extended tool life across a wide range of workpiece materials. The DCMT070208HQ features precision-ground cutting edges and an optimized substrate-coating combination that ensures reliable performance in both continuous and interrupted cutting conditions.

ISO Designation Breakdown

The DCMT070208HQ follows the ISO 1832 standard for indexable inserts. Each character in the designation conveys critical geometric and tolerance information:

Engineering Dimensions & Geometry

Precise dimensional specifications ensure perfect fitment in standard ISO toolholders and consistent repeatability:

Grade Details — Key Grade Characteristics

The CA510 grade is a CVD-coated micro-grain carbide grade engineered for general-purpose steel and cast iron machining. Key characteristics include:

• Substrate: Micro-grain carbide with high cobalt content
• Coating System: CVD multi-layer coating (TiCN + Al₂O₃ + TiN)
• Visual Identification: Gold/Yellow top layer
• Hardness: HRA 91.5
• Transverse Rupture Strength: ≥ 2,800 MPa
• Optimal Temperature Range: 800°C - 1,000°C optimal cutting temperature
• Primary Application: General steel machining, cast iron, and stainless steel

Grade Comparison Matrix

Compare CA510 with adjacent grades in the Kyocera portfolio to select the optimal solution for your application:

Chipbreaker Profile

HQ Geometry: Heavy-duty chipbreaker with reinforced cutting edge for interrupted cuts and roughing. High positive rake angle reduces cutting forces.

The HQ chipbreaker is specifically designed to curl and break chips efficiently, preventing bird-nesting and improving surface quality. The land width and rake angle are optimized for the CA510 grade coating system, ensuring balanced heat distribution and minimal crater wear.

Recommended Applications & Workpiece Materials

The DCMT070208HQ is ideal for machining the following materials:

• Carbon steel, alloy steel, stainless steel, cast iron, hardened steel (up to 45 HRC)
• General engineering steels (Ck45, Ck60)
• Case-hardened and quenched & tempered steels
• Free-machining steels with sulfur/phosphorus additions
• Ferritic and martensitic stainless steels

Application Map by Operation

Suitability ratings for common turning operations:

Recommended Cutting Conditions

Starting parameters for the DCMT070208HQ with CA510 grade. Adjust based on machine rigidity, workpiece condition, and desired productivity:

Operating Guidelines

• Coolant Recommendation: Use water-soluble coolant at 6-8% concentration for steel and stainless steel. For cast iron, dry machining or minimum quantity lubrication (MQL) is acceptable.
• Tool Overhang: Minimize tool overhang to prevent vibration. Keep overhang-to-diameter ratio below 4:1 for stable cutting.
• Entry Angle: Maintain a 93°-95° tool entering angle for optimal chip control and reduced notch wear.
• Edge Preparation: CA510 grade features honed edges (T-land) for improved edge stability. Do not re-sharpen—index to fresh edge when worn.
• Speed Ramp: Start at the lower end of recommended Vc and increase gradually while monitoring tool wear and surface finish.
• Chip Evacuation: Ensure adequate chip evacuation, especially in deep grooving and internal operations. Use high-pressure coolant if available.
• Workpiece Rigidity: Secure workpiece firmly. Use steady rests for long shafts to prevent deflection and chatter.
• Insert Indexing: Index insert every 30-45 minutes of cutting time or when flank wear reaches 0.3 mm. Always use proper indexing tool to avoid damage.

Toolholder Compatibility

The DCMT070208HQ is compatible with the following standard ISO toolholder families:

• Compatible Holders: DDJNR/L, DCLNR/L, SDJCR/L (55° rhombic holders)
• Insert Seat Angle: 7°-11° (Positive)
• Clamping Method: Lever lock or top clamp (depending on holder design)
• Shank Sizes: 16×16 mm, 20×20 mm, 25×25 mm, 32×32 mm standard
• Hand of Tool: Right-hand (R) and Left-hand (L) configurations available

Packaging & Ordering Information

Each unit is packaged to ensure protection during transit and storage:

Catalog Meta Data

Technical reference and traceability information:

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