Product Overview

The Kyocera #33 DRILL 2FL 3XD TC SGS51716 is a premium solid carbide drill engineered for demanding CNC machining environments. With a 2.87 mm diameter and 3×D flute length, this tool delivers exceptional hole quality, dimensional accuracy, and process reliability across high-volume production runs. Manufactured in Japan to ISO 9001 standards, it is the preferred choice for precision drilling in aerospace, automotive, and general engineering sectors.

ISO Designation Breakdown

Engineering Dimensions & Geometry

Grade Details – Key Grade Characteristics

Grade Comparison Matrix

Chipbreaker Profile

The TC-series for light to medium cutting chipbreaker features a precision-ground groove geometry that promotes controlled chip curling and efficient evacuation. The profile includes:

• Primary groove width: 0.12 × Diameter — initiates chip curl at low feed rates
• Secondary land angle: 12° — provides edge support and reduces chipping
• Rake angle: 8° positive — reduces cutting forces and heat generation
• Chipbreaker depth: 0.08 mm — optimized for 2.87 mm diameter range

Recommended Applications & Workpiece Materials

Application Map by Operation

Recommended Cutting Conditions

Note: Values are starting recommendations. Adjust based on machine rigidity, coolant concentration, and workpiece material condition.

Operating Guidelines

• Coolant: Use water-soluble coolant at 6–8% concentration; minimum flow rate 15 L/min for 2.87 mm drills.
• Runout Check: Verify tool runout is ≤ 0.01 mm before operation to prevent premature wear.
• Peck Cycle: For blind holes, retract fully every 2×D to clear chips and reduce heat buildup.
• Entry Angle: Maintain 90° entry where possible; for inclined surfaces, use spot drill first or reduce feed by 30% for the first 1 mm.
• Tool Life Monitoring: Monitor flank wear (VB). Replace when VB reaches 0.15 mm for precision applications or 0.25 mm for general machining.
• Storage: Store in original packaging away from humidity and direct sunlight. Avoid contact with other tools to prevent edge damage.

Toolholder Compatibility

The SGS51716 is compatible with the following holder systems:

• Standard drill chucks, collet chucks (ER16, ER20, ER32), hydraulic holders, shrink-fit holders
• Minimum clamping force: 20 Nm (ER collet) or 50 bar (hydraulic)
• Recommended TIR (Total Indicated Runout): ≤ 0.005 mm at 2×D gauge length
• For shrink-fit holders: preheat to 300 °C, shrink time 8–12 seconds

Packaging & Ordering Information

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