Kyocera TKN1.6-P KW10 TWE15010 Cut-Off Insert - Cut-Off

Product Overview

The Kyocera TKN1.6-P KW10 Grade Uncoated Carbide Indexable Cut-Off Insert is a precision-engineered cutting tool manufactured by Kyocera in Japan. provides stable cutting action with minimal burr formation, making it ideal for CNC turning centers performing parting-off, grooving, and cutoff operations. The TKN1.6-P features a 1.6 mm cutter width with neutral (N) hand orientation for straight plunge cutting without lateral thrust forces, engineered to minimize material waste and deliver clean, square cutoff faces. maximizes productivity in high-volume production environments.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details - Key Grade Characteristics

KW10 is a premium uncoated fine-grain tungsten carbide grade developed by Kyocera specifically for cut-off, grooving, and precision finishing applications. The sub-micron grain structure provides exceptional hardness while retaining sufficient toughness to resist micro-chipping during interrupted cuts.

• Substrate: Ultra-fine WC-Co carbide (ISO K10 classification)
• Hardness: ~91.5 HRA, delivering superior wear resistance in abrasive cast iron
• Coating: Uncoated (bare substrate) to maintain the sharpest possible edge for clean cutoff
• Edge Preparation: Light hone (T-land) to prevent edge micro-fracture on entry
• Thermal Conductivity: High thermal conductivity dissipates heat efficiently during narrow-groove cutting
• Primary Advantage: Minimal burr formation and reduced secondary finishing on cutoff faces

Grade Comparison Matrix

Chipbreaker Profile

The P-profile chipbreaker is engineered for low-feed cut-off operations, creating tightly curled chips that evacuate cleanly from the narrow groove. This profile minimizes chip packing and reduces the risk of insert fracture during deep grooving.

• Chipbreaker Type: P (Low-Feed Narrow Groove)
• Feed Range: 0.02 – 0.08 mm/rev
• Chip Form: 6C–9C (tightly curled, short arc)
• Groove Depth Limit: Up to 15 mm with stable chip flow

Recommended Applications & Workpiece Materials

The KW10 substrate and uncoated edge make the TKN1.6-P particularly effective on materials where heat dissipation and edge sharpness are critical. Recommended workpiece materials include:

• Gray & Ductile Cast Iron — Superior wear resistance and stable cutting action
• Aluminum Alloys (6061, 7075, A380) — Clean cutoff without built-up edge or burr
• Copper & Brass — Excellent surface finish on cutoff faces with minimal deformation
• Titanium Alloys (Ti-6Al-4V, Ti-3Al-2.5V) — Low-speed cutoff with adequate coolant to prevent ignition
• Plastics & Composites — Sharp edge prevents melting and delamination at cutoff
• Non-Metallic Materials (Graphite, Ceramic) — Abrasion-resistant edge maintains width accuracy

Application Map by Operation

Recommended Cutting Conditions

Note: Values are starting recommendations. Reduce cutting speed by 15–20% when approaching the center of the workpiece to prevent spindle load spikes. Always use adequate coolant for titanium and steel alloys.

Operating Guidelines

• Toolholder Selection: Use KTKC-compatible cut-off holders with maximum rigidity. Overhang should not exceed 1.5× holder width to prevent chatter and insert breakage.
• Insert Seating: Clean the holder pocket thoroughly before insert installation. Torque clamping screw to 2.0–2.5 N·m. Verify insert is fully seated and flush with holder face.
• Coolant Recommendation: High-pressure coolant (≥70 bar) directed at the cutting zone is strongly recommended for steel and titanium. For cast iron and aluminum, flood coolant or dry machining is acceptable.
• Center Approach: Reduce feed rate by 50% when the tool reaches within 2 mm of the spindle centerline to prevent "zero-speed" rubbing and insert fracture.
• Indexing: The TKN1.6-P has 1 cutting edge(s). When flank wear exceeds 0.10 mm or burr formation increases, rotate or replace the insert immediately.
• Workpiece Support: For bar cutoff operations, ensure the bar extends no more than 3× diameter from the chuck. Use steady rests for long shafts to minimize vibration.

Toolholder Compatibility

The TKN1.6-P is designed to seat in standard KTKC series cut-off toolholders. Compatible holder families include:

• Kyocera KTKC-N16 External Cut-Off Holders (matching width)
• Kyocera KTKC-IN16 Internal Grooving Bars (minimum bore Ø20 mm)
• ISO 1832 Type G (Rectangular Cut-Off) compliant pockets
• Clamp systems: Top-clamp or wedge-lock for secure insert retention under radial loads

Verify holder pocket width matches insert width exactly. A loose pocket causes insert movement and poor dimensional accuracy; an overly tight pocket risks insert cracking during clamping.

Packaging & Ordering Information

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