Product Overview

The Kyocera #11 2FL 3XD TA SGS51774 is a premium solid carbide standard depth drill engineered for demanding CNC machining environments. Designed with a 3×D length-to-diameter ratio and 2-flute construction, this tool delivers exceptional hole quality, dimensional accuracy, and process reliability across a wide spectrum of workpiece materials. The TA grade substrate provides an optimal balance of hardness, toughness, and thermal stability for uninterrupted high-speed production.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details — Key Grade Characteristics

The TA grade is a micro-grain tungsten carbide substrate featuring a proprietary multi-layer PVD coating architecture. This grade is specifically formulated for high-speed drilling operations where thermal cycling and abrasive wear are primary failure modes.

• Substrate Hardness: 1,650 HV (Vickers) — exceptional resistance to crater wear
• Transverse Rupture Strength: 3,800 MPa — optimized for interrupted cuts and cross-hole drilling
• Coating Composition: TiAlN-based multi-layer with enhanced oxidation resistance up to 900°C
• Coating Thickness: 3.5 ± 0.5 μm — balanced between adhesion and abrasion resistance
• Surface Finish: Mirror-polished flute surface (Ra 0.15 μm) for superior chip evacuation
• Edge Preparation: Micro-honed T-land (0.02 mm × 20°) for edge stability and burr reduction

Grade Comparison Matrix

Chipbreaker Profile

The SGS51774 features an optimized flute geometry designed specifically for 3XD drilling applications. The flute profile incorporates a variable helix design with a polished surface treatment to minimize chip adhesion and packing.

Recommended Applications & Workpiece Materials

This drill is optimized for the following material groups and industrial sectors:

Application Map by Operation

Recommended Cutting Conditions

Note: Values are starting recommendations. Optimize based on machine rigidity, workpiece material, and coolant delivery. For hardened steels (>45 HRC), reduce Vc by 20% and use peck cycle.

Operating Guidelines

• Spindle Requirements: High-speed spindle recommended. Minimum runout TIR ≤ 0.01 mm at tool tip.
• Toolholder: Use hydraulic or shrink-fit chuck (HSK-A63 or higher recommended). Collet holders acceptable only with < 0.01 mm runout.
• Coolant Strategy: Through-tool coolant or external flood coolant. Ensure coolant reaches the cutting edge without deflection.
• Peck Drilling: Mandatory for 3XD blind holes. Retract to 0.5×D above hole bottom to break chips.
• Entry Surface: Spot drill or mill a flat entry surface. Avoid drilling on cast/as-forged surfaces without preparation.
• Breakthrough: Reduce feed to 60% when remaining wall thickness < 0.5×D to prevent burr and exit breakout.
• Tool Life Monitoring: Replace when flank wear (VB) reaches 0.15 mm or when hole tolerance exceeds IT9.

Toolholder Compatibility

Packaging & Ordering Information

Catalog Meta Data

Technical Support: For application-specific cutting data, fixture recommendations, or custom tool configurations, contact our engineering team with your part drawing and material specification. We provide complimentary tooling audits to optimize your drilling cycle times and tool consumption.