Kyocera TKFT12LB55005 KW10 TWE16589 Threading Insert - Threading

Product Overview

The Kyocera TKFT12LB55005 KW10 Grade Uncoated Carbide Indexable Threading Insert is a precision-engineered cutting tool manufactured by Kyocera in Japan. guarantees high-precision machining with extended edge life, making it ideal for CNC turning centers performing external and internal threading operations. The TKFT12LB55005 features Type B geometry with a 0.5 mm thread pitch, engineered to produce accurate thread profiles with minimal flank wear. ensures repeatable results across batch operations.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details - Key Grade Characteristics

KW10 is a premium uncoated fine-grain tungsten carbide grade engineered by Kyocera for high-precision threading of ferrous and non-ferrous materials. The micro-grain structure (sub-micron particle size) provides an optimal balance of hardness and toughness, delivering a sharp, stable cutting edge that maintains profile accuracy over extended machining cycles.

• Substrate: Ultra-fine WC-Co carbide (K10 equivalent classification)
• Hardness: ~91.5 HRA, providing excellent wear resistance at moderate speeds
• Coating: Uncoated (bare substrate) to preserve edge sharpness for fine threading
• Edge Preparation: Precision-honed T-land for burr-free thread formation
• Thermal Stability: Stable performance up to 400°C without oxidation degradation
• Primary Advantage: Mirror-finish surface quality on thread flanks and crests

Grade Comparison Matrix

Chipbreaker Profile

The TKFT12LB55005 utilizes a neutral-ground threading geometry optimized for full-profile ISO metric threads. Unlike turning chipbreakers, threading inserts rely on controlled flank engagement and precise rake angles to form chips along the thread helix. The Type B geometry incorporates a slightly modified rake face to direct chips away from the workpiece surface, preventing chip recutting and protecting finished thread flanks.

• Rake Angle: Neutral to slightly positive for steel and cast iron
• Flank Relief: Optimized for 60° thread profile accuracy
• Chip Flow: Radial outward evacuation via helical cutting path
• Edge Condition: Micro-honed to prevent burr formation on thread crests

Recommended Applications & Workpiece Materials

The KW10 substrate and uncoated edge make the TKFT12LB55005 particularly effective on materials where edge sharpness directly correlates with surface finish quality. Recommended workpiece materials include:

• Carbon & Alloy Steels (up to 35 HRC) — Excellent thread finish and tool life
• Stainless Steels (304, 316, 430 series) — Reduced work-hardening tendency due to sharp edge
• Cast Iron (Gray, Ductile) — Stable cutting with minimal edge chipping
• Non-Ferrous Metals (Aluminum, Brass, Copper) — Mirror finish achievable without built-up edge
• Titanium Alloys (Ti-6Al-4V) — Suitable for low-speed precision threading with adequate coolant

Application Map by Operation

Recommended Cutting Conditions

Note: Values are starting recommendations. Optimize based on machine rigidity, coolant delivery, and workpiece setup. Reduce speeds by 20% for internal threading applications.

Operating Guidelines

• Toolholder Selection: Use TKFT-compatible external or internal threading holders with precise pocket tolerances (±0.01 mm) to maintain thread pitch accuracy.
• Insert Seating: Ensure the insert sits fully in the pocket without debris. Torque clamping screw to 2.5–3.0 N·m; do not overtighten.
• Coolant Recommendation: Flood coolant with 5–8% soluble oil emulsion is recommended for steel and stainless steel. For cast iron and aluminum, dry machining or minimum quantity lubrication (MQL) is acceptable.
• Depth of Cut Strategy: Use radial infeed for coarse pitches; flank infeed for fine pitches to distribute wear evenly across both cutting edges.
• Indexing: When edge degradation is detected (visible flank wear >0.05 mm or thread crest burrs), index to the second cutting edge. Discard insert if both edges are exhausted.
• Workpiece Runout: Maintain workpiece runout below 0.02 mm to prevent uneven thread lead errors and premature insert breakage.

Toolholder Compatibility

The TKFT12LB55005 is designed to seat in standard TKFT series threading toolholders. Compatible holder families include:

• Kyocera TKFT-E12 External Threading Holders (12 mm shank)
• Kyocera TKFT-I12 Internal Threading Holders (minimum bore Ø16 mm)
• ISO 1832 Type 22 (Triangular Threading) compliant pockets
• Clamp systems: Lever-lock or top-screw clamp depending on holder series

Verify holder pocket geometry (IC, thickness, and seat angle) matches insert specifications before mounting. Incompatible holders may cause vibration, poor thread accuracy, and insert fracture.

Packaging & Ordering Information

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