Product Overview

The Kyocera 27/64 DRILL 2FL 5XD TA IC SGS56860 is a premium solid-carbide drill engineered for high-performance CNC machining. Featuring a 2-flute design with 5×D flute length, this tool delivers exceptional hole quality, dimensional accuracy, and extended tool life in demanding production environments. The optimized TA grade substrate combined with advanced TiAlN coating technology ensures stable performance across a wide range of ferrous and non-ferrous materials.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details – Key Grade Characteristics

The TA grade is a high-performance TiAlN-coated carbide substrate specifically developed for general-purpose drilling and milling applications. Key characteristics include:

• Substrate: Fine-grain tungsten carbide (0.6 μm grain size) with 10% cobalt binder for excellent hardness and toughness balance
• Coating: Monolayer TiAlN PVD coating providing superior heat resistance up to 900°C
• Hardness: 1,850 HV30 substrate hardness with 3,000 HV coating surface hardness
• Oxidation Resistance: Good thermal stability for wet and MQL machining environments
• Coating Thickness: 3.0 μm total coating thickness with strong adhesion to substrate
• Surface Finish: Polished flute surfaces (Ra 0.20 μm) to reduce chip adhesion and friction

Grade Comparison Matrix

Chipbreaker Profile

The 27/64 DRILL features an optimized chipbreaker geometry designed for 2-flute deep-hole drilling:

• Primary Land Width: 0.08 × D for stable cutting edge support
• Chipbreaker Groove Depth: 0.03 × D with variable pitch to prevent harmonic vibration
• Rake Angle: 10° positive rake for reduced cutting forces and improved chip flow
• Margin Design: Double-margin with 0.15 mm width for superior hole straightness and surface finish
• Web Thinning: Advanced web thinning reduces thrust force by up to 20% compared to standard geometries

Recommended Applications & Workpiece Materials

Application Map by Operation

Recommended Cutting Conditions

Note: Start at the lower end of the range for 5×D applications; increase gradually based on machine rigidity and hole quality requirements.

Operating Guidelines

• Pecking Cycle: For depths > 3×D, use a high-precision peck cycle with retract to 1×D above the bottom of the previous peck. Peck depth should not exceed 1.5×D per step.
• Tool Overhang: Minimize overhang to < 4×D for optimal rigidity. Use hydraulic or shrink-fit toolholders for best results.
• Coolant Pressure: Maintain internal coolant pressure ≥ 50 bar (725 psi) for effective chip evacuation in blind holes.
• Entry Surface: Ensure flat, perpendicular entry surface. Chamfer or spot-drill inclined surfaces before drilling.
• Pre-Drilling: For holes in castings or forged surfaces, use a short drill or center drill to create a stable pilot.
• Tool Change Interval: Monitor flank wear (VB). Replace when VB reaches 0.3 mm or when hole tolerance begins to drift.
• Speed/Feed Adjustment: Reduce cutting speed by 10% when drilling stacked plates or materials with hard inclusions.

Toolholder Compatibility

Runout Requirement: Total indicated runout (TIR) at the tool point must not exceed 0.01 mm for holes requiring H7 tolerance.

Packaging & Ordering Information

• Packaging: Individual plastic protective tube with foam insert; 10 units per master carton
• Labeling: Each tube includes laser-etched part number, batch code, and ISO designation
• Minimum Order: 1 piece (no MOQ for standard items)
• Lead Time: Stock item – ships within 24 hours for orders placed before 2:00 PM
• Warranty: 12-month manufacturer defect warranty from date of purchase
• Storage: Store in original packaging at 15–25°C with < 60% relative humidity to prevent coating degradation

Catalog Meta Data

Need application support? Our technical team can assist with tool selection, parameter optimization, and custom quoting for production volumes. Contact Kyotow.com for expert CNC tooling assistance.