Kyocera GMM502008V KW10 Grade Uncoated Carbide, Indexable Grooving Insert

Product Overview

The Kyocera GMM5020-080V KW10 Indexable Grooving Insert is a precision-engineered carbide cutting tool designed for per toolholder specification operations. Manufactured in Japan to exacting OEM standards, this insert delivers exceptional dimensional stability, superior surface finish quality, and extended edge life in demanding CNC production environments. The optimized macro-geometry minimizes cutting forces while maximizing chip evacuation efficiency, making it ideal for high-volume manufacturing across aerospace, automotive, medical device, and general precision engineering sectors.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details - Key Grade Characteristics

The KW10 grade is a premium carbide substrate engineered specifically for machining non-ferrous metals, cast iron, and hardened steels where sharp cutting edges and minimal built-up edge formation are critical. This grade exhibits high hardness (HV 1,850) combined with excellent transverse rupture strength, enabling stable cutting at elevated speeds without premature chipping or flank wear. The ultra-fine grain structure (0.5 μm average grain size) ensures consistent edge sharpness and predictable tool life cycles.

• Ultra-fine grain carbide for superior edge stability
• Optimized cobalt binder ratio for toughness retention
• Excellent thermal conductivity for heat dissipation
• Low coefficient of friction against aluminum and titanium alloys
• Consistent performance in wet and dry machining environments

Grade Comparison Matrix

Chipbreaker Profile

Chipbreaker Profile: Standard Geometry

Precision-ground cutting edge with optimized rake and clearance angles for cnc turning.

• Neutral edge preparation for consistent performance
• Optimized for a range of feed rates and depths of cut
• Compatible with standard coolant delivery systems

Recommended Applications & Workpiece Materials

The GMM5020-080V KW10 is specifically validated for the following workpiece materials and operational contexts:

• Primary Materials: General engineering materials including steel, stainless steel, cast iron, and non-ferrous alloys
• Surface Condition: Suitable for as-cast, as-forged, pre-machined, and heat-treated surfaces
• Coolant Strategy: Compatible with flood coolant, minimum quantity lubrication (MQL), and dry machining
• Industry Sectors: Automotive powertrain, aerospace structural components, medical implant machining, fluid power systems, general precision manufacturing

Application Map by Operation

Recommended Cutting Conditions

Note: Parameters are starting recommendations. Optimize based on machine rigidity, workpiece clamping, and surface finish requirements. Reduce speed by 15% for interrupted cuts or cast skin.

Operating Guidelines

• Toolholder Selection: Use dedicated KGrooving Inserts series toolholders with precise insert pocket tolerance (+/-0.01 mm) to ensure accurate cutting edge positioning.
• Runout Verification: Maintain TIR below 0.01 mm at the cutting edge to prevent uneven wear and premature failure.
• Coolant Alignment: Direct coolant nozzle to the cutting zone at 15-20 degrees from tangent for optimal chip evacuation and thermal management.
• Edge Inspection: Visually inspect insert seating surface before each indexing operation; remove any chip fragments or debris.
• Depth Limitation: Do not exceed maximum grooving depth specified for the toolholder-insert combination to avoid insert breakage.
• Feed Ramp: Use reduced feed (50%) for the first 2 mm of engagement when entering solid material to protect the cutting edge.

Toolholder Compatibility

The GMM5020-080V insert is designed for use with KGrooving Inserts series toolholders and compatible grooving bar systems. Verify the following compatibility parameters before ordering:

• Insert Width: Match toolholder groove width to insert cutter width specification
• Hand Orientation: Confirm neutral hand toolholder for correct cutting edge alignment
• Clamp System: Top-clamp or hole-clamp depending on insert geometry and stability requirements
• Shank Size: Select minimum shank diameter based on maximum grooving depth and overhang ratio
• Coolant Through: High-pressure through-toolholder coolant recommended for deep grooving and stainless steel applications

For detailed toolholder pairing charts and 3D CAD models, refer to the Kyocera Precision Tools technical catalog or contact Kyotow.com application engineering support.

Packaging & Ordering Information

• Standard Packaging: 10 inserts per sealed plastic container with desiccant and foam insert protection
• MPN (Manufacturer Part Number): TWE12939
• Minimum Order Quantity: 1 pack (10 inserts)
• Country of Origin: Japan
• HS Classification: 8209.00 (Indexable inserts of unmounted carbides)
• Storage Recommendation: Store in original packaging at 15-25 degrees C, relative humidity below 60%
• Shelf Life: 5 years from date of manufacture when stored under recommended conditions

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