CCGT21.50.2FRU KW10 Grade Uncoated Carbide, Indexable Turning Insert For Boring, External Turning, Facing, Internal Facing, Sub-Spindle

Product Overview

The CCGT060201FR-U is a premium-grade indexable turning insert from Kyocera Precision Tools. Manufactured under strict ISO 9001 quality standards, this 80 degree diamond insert combines a 80° rhombic positive insert with sharp cutting edge with the versatile KW10 uncoated carbide substrate. Engineered specifically for boring, external turning, facing, internal facing, sub-spindle, it delivers premium surface quality and enhanced durability across demanding CNC production environments. Each insert features two precision-ground cutting edges, maximizing cost-per-edge efficiency while maintaining tight dimensional tolerances.

ISO Designation Breakdown

Understanding the ISO nomenclature ensures correct tool selection and compatibility:

Engineering Dimensions & Geometry

Grade Details - Key Grade Characteristics

The KW10 grade is a fine-grain uncoated cemented carbide belonging to the ISO K10 application group. Its micro-grain structure (average grain size <1.0 μm) delivers exceptional hardness (HRA 92.0) and transverse rupture strength (>2,200 MPa), making it ideal for precision finishing where edge sharpness is critical.

• Substrate: WC-Co fine-grain carbide with 6% cobalt binder
• Coating: Uncoated (bare substrate for maximum edge sharpness)
• Hardness: HRA 92.0 ± 0.5
• TRS: >2,200 MPa
• Thermal Stability: Excellent up to 800°C
• Edge Preparation: Sharp (S-type) with minimal hone
• Primary Use: High-precision finishing of non-ferrous and cast iron materials

Grade Comparison Matrix

Chipbreaker Profile

U Chipbreaker: U-type universal chipbreaker optimized for light to medium cutting depths. Provides excellent chip control in finishing operations with low cutting forces.

The U profile creates a controlled chip curl radius that prevents chip entanglement on the workpiece or toolholder. This is particularly critical in automated CNC environments where uninterrupted chip evacuation is essential for process reliability.

Recommended Applications & Workpiece Materials

The KW10 grade with U chipbreaker is optimized for the following material groups:

• Cast Iron (ISO K): Grey cast iron (GG/GGL), nodular cast iron (GGG), malleable cast iron
• Non-Ferrous Metals (ISO N): Aluminum alloys (2xxx, 5xxx, 6xxx, 7xxx series), copper, brass, bronze
• Titanium Alloys: Commercially pure titanium, Ti-6Al-4V (Grade 5), Ti-5Al-2.5Sn
• Non-Metallic Materials: Engineering plastics, composites, graphite

Note: Not recommended for ferrous steels or stainless steels due to lack of heat-resistant coating. For steel applications, consider Kyocera CA310 or PR930 grades.

Application Map by Operation

Recommended Cutting Conditions

Parameters below serve as starting points. Optimize based on machine rigidity, coolant delivery, and workpiece condition:

Conditions assume stable setup, sharp insert, and adequate coolant/flood delivery. Reduce Vc by 15–20% for interrupted cuts or less rigid setups.

Operating Guidelines

• Tool Overhang: Minimize overhang to <4× tool diameter to prevent chatter and vibration
• Coolant: Flood coolant recommended for titanium and aluminum to prevent built-up edge (BUE)
• Insert Seating: Ensure toolholder pocket is clean and free of chips before insert change
• Clamping Torque: Use calibrated torque wrench; over-tightening causes insert fracture
• Edge Inspection: Check for micro-chipping or flank wear >0.15mm before index
• Storage: Keep inserts in original packaging away from moisture and corrosive environments

Toolholder Compatibility

This insert is compatible with standard ISO toolholders featuring the CCGT pocket style. Recommended holder series include:

• External Turning: CCJNR, CCLNR, CCKNR (95° tool approach angle)
• Boring Bars: CCGT type boring bars with internal coolant capability
• Face Turning: CCGT holders with 45° or 75° lead angle
• Sub-Spindle: Compact CCGT holders for back-operation finishing

Verify toolholder pocket tolerance (G-class) and clamping mechanism (lever lock or screw clamp) before ordering.

Packaging & Ordering Information

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