Product Overview

The Kyocera SGS54610 is a premium solid carbide 3-flute drill engineered for high-performance CNC machining. Featuring a 1/4" (0.2500") diameter with 3×D flute length, this tool delivers exceptional hole quality, dimensional accuracy, and extended tool life in demanding production environments. The CA5530 grade substrate with advanced PVD coating ensures superior wear resistance and stable performance across a broad range of ferrous and non-ferrous workpiece materials.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details - Key Grade Characteristics

The CA5530 grade is a micro-grain carbide substrate with a multi-layer PVD coating optimized for high-speed drilling in steels, stainless steels, and cast iron. Key characteristics include:

• Substrate: Ultra-fine 0.5 μm tungsten carbide grain structure (12% Co binder)
• Coating: TiAlN-based PVD multi-layer (3.0 μm total thickness)
• Hardness: 1,650 HV30 — exceptional resistance to abrasive wear
• Transverse Rupture Strength: 4,200 MPa — high toughness for interrupted cuts
• Operating Temperature: Up to 900°C (1,652°F) with stable coating performance
• Friction Coefficient: 0.35 (dry) — reduced built-up edge tendency

Grade Comparison Matrix

Chipbreaker Profile

The SGS54610 features an optimized 3-flute geometry with a proprietary edge preparation designed for excellent chip evacuation and reduced cutting forces:

• Edge Preparation: 0.05 mm × 20° T-land hone with micro-polished flank
• Chipbreaker Geometry: Continuous helical flute with polished rake surface (Ra 0.2 μm)
• Core Thickness: 28% of drill diameter — maximized torsional rigidity
• Margin Width: 8% of drill diameter — ensures stable wall contact and burnishing action
• Web Thinning: Split-point geometry reduces thrust force by 25% at entry

Recommended Applications & Workpiece Materials

Application Map by Operation

Recommended Cutting Conditions

Parameters are indicative for stable setups with adequate coolant supply (8% emulsion or MQL). Adjust based on machine rigidity and fixture stability.

Operating Guidelines

• Coolant: High-pressure coolant (≥70 bar / 1,000 PSI) through-tool is strongly recommended for chip evacuation and tool life optimization.
• Pecking: For depths >2×D, use variable peck cycles (1×D → 0.5×D → 0.3×D) to clear chips and reduce heat buildup.
• Entry Angle: Ensure perpendicular entry (±0.5°) or use a spot drill/center drill to prevent walking and chipping.
• Exit Strategy: Reduce feed to 50% when breaking through to avoid burr formation and edge chipping.
• Speed Ramp: Start at 80% of recommended vc for the first 50 holes, then increase to 100% once the tool is "warmed in."
• Tool Life Check: Monitor flank wear (VB). Regrind or replace when VB exceeds 0.15 mm (0.006") or when hole diameter tolerance drifts.

Toolholder Compatibility

Runout Requirement: Total indicated runout (TIR) should not exceed 0.01 mm (0.0004") at the tool tip for optimal performance and tool life.

Packaging & Ordering Information

Catalog Meta Data

Need application support? Contact our CNC tooling specialists for help with speeds, feeds, and tool selection for your specific material and machine setup.