Product Overview

The Kyocera 15/64 2FL 12XD TX solid carbide drill (MPN: SGS56517) is engineered for high-performance drill operations in demanding production environments. Featuring a Premium micro-grain substrate with a Advanced PVD multi-layer coating, this tool delivers exceptional wear resistance, superior surface finish, and extended tool life across alloy steel, cast iron, and tool steel applications. 12× diameter flute length for ultra-deep hole drilling applications. Optimized for CNC machining centers, it provides reliable performance in automotive and energy sectors where precision and repeatability are critical.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details – Key Grade Characteristics

The TX grade TX grade represents premium micro-grain carbide technology, specifically developed for high-speed drilling in ferrous and non-ferrous materials. Key characteristics include:

• Substrate: Premium micro-grain with 0.8 μm average grain size for optimal hardness and toughness balance
• Coating: Advanced PVD multi-layer PVD coating with hardness of 3,300 HV
• Oxidation Resistance: Stable performance up to 1,100°C (2,012°F)
• Coefficient of Friction: 0.35–0.40 against steel, reducing built-up edge formation
• Coating Thickness: 2.5 ± 0.5 μm for minimal edge radius impact
• Color Code: Bronze-copper appearance for quick visual identification

Grade Comparison Matrix

Chipbreaker Profile

Although this is a solid carbide drill rather than an indexable insert, the cutting edge geometry incorporates advanced chip control features:

• Split Point Geometry: 140° point angle with web thinning reduces thrust force by 40% compared to conventional points
• Parabolic Flute Design: Deep, polished flutes provide maximum chip evacuation capacity, essential for alloy steel and cast iron applications. Ultra-deep drilling demands exceptional chip evacuation, rigid setup, and high-pressure coolant
• Margin Relief: Secondary margin land reduces friction and heat generation during full-depth drilling
• Edge Preparation: Controlled hone of 0.002–0.003" (0.05–0.08 mm) prevents micro-chipping on entry while maintaining sharpness
• Coolant Channels: Internal coolant ports direct high-pressure fluid to the cutting edge for effective chip flushing and thermal management

Recommended Applications & Workpiece Materials

Application Map by Operation

Recommended Cutting Conditions

Parameters below are starting recommendations for alloy steel using flood coolant or through-tool coolant (minimum 70 bar / 1,000 psi recommended for 15/64 diameter):

Operating Guidelines

• Entry Angle: Ensure perpendicular entry (±1°) to prevent corner chipping. Use a spot drill or center drill if hole depth exceeds 5×D.
• Peck Cycle: For depths beyond 2×D, use a full retract peck cycle every 0.188" to clear chips and allow coolant penetration. Mandatory for 12×D; use full retract peck every cycle with dwell for coolant penetration
• Rigid Setup: Minimize tool overhang to 4×D or less. Shrink-fit or hydraulic holders mandatory; minimum runout 0.0002" TIR for 12×D stability.
• Speed & Feed Ramping: Ramp spindle speed over 2 seconds on engagement to avoid thermal shock to the carbide substrate.
• Coolant Filtration: Maintain coolant cleanliness at 25 μm or finer to prevent abrasive wear on the cutting edges. High-pressure through-tool coolant (120+ bar) absolutely essential for chip evacuation at 12×D depth
• Tool Life Monitoring: Replace drill when flank wear reaches 0.008" (0.20 mm) or when surface finish degrades below 32 μin Ra.
• Breakthrough Strategy: Reduce feed by 20% when drill approaches breakthrough to prevent burr formation and exit chipping.

Toolholder Compatibility

Collet Size Recommendation: For 15/64" (0.2344") diameter, use a 0.234" precision collet (ER16 for shanks up to 3/8", ER20 for larger, ER25 for 3/4"+). Ensure collet clamping force is within manufacturer specifications to prevent slippage under high torque.

Packaging & Ordering Information

• Packaging: Each unit is individually sealed in a clear plastic protective tube with anti-corrosion VCI (Vapor Corrosion Inhibitor) paper
• Labeling: Tube includes barcode label with MPN (SGS56517), batch number, and manufacturing date code
• Quantity per Package: 1 piece per tube; bulk orders available in quantities of 10, 50, or 100 units
• Storage: Store in original packaging at 15–25°C (59–77°F) with relative humidity below 60%
• Shelf Life: Uncoated substrate stable indefinitely; PVD coating integrity guaranteed for 24 months from manufacture date
• Lead Time: Standard stock items ship within 1–2 business days; non-stock items typically 2–3 weeks
• Warranty: Genuine Kyocera product backed by full manufacturer warranty against material and workmanship defects

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