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Kyocera 1/8 TC SGS58415 DRILL - CNC Machining

Kyocera 1/8 TC SGS58415 DRILL - CNC Machining
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Kyocera 1/8 TC SGS58415 DRILL - CNC Machining
$28.10 USD
$46.83 USD
1 or more $28.10 USD
  • Stock: In Stock
  • Model: DRILL
  • Weight: 0.10kg
  • Manufactured: In Japan
  • Ships: Worldwide
  • Item Code: SGS58350
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Product Overview

The Kyocera 1/8 DRILL 2FL TC SGS58415 is a precision-engineered solid carbide drill designed for demanding CNC machining operations. Manufactured in Japan to exacting ISO standards, this 1/8-inch diameter tool features a 2-flute design optimized for superior chip evacuation and hole quality in a wide range of ferrous and non-ferrous materials.

Key Benefits: Extended tool life through ultra-fine grain carbide substrate and AlTiN PVD coating | Mirror-finish hole quality | Reduced cycle times via high-speed capability | Stable performance in wet and dry machining environments.

ISO Designation Breakdown

Designation ElementCodeDescription
Tool CategoryDSolid carbide drill
Nominal Diameter3.17 mm (1/8")Cutting diameter per ANSI/ISO standard
Flute Count2FLTwo-flute design for chip evacuation
Manufacturer CodeSGS58415Kyocera catalog identifier
GradeTCUltra-fine grain carbide with AlTiN coating
Full ISO CalloutD1.25-2FL-SGS58415-TC

Engineering Dimensions & Geometry

Cutting Diameter (D1)
1/8" (3.175 mm)
Flute Length (L1)
0.625" (15.88 mm)
Overall Length (L)
1.500" (38.10 mm)
Shank Diameter (D2)
0.170" (4.32 mm)
Point Angle
140° ± 2° (Split-point optional)
Helix Angle
30° ± 1° (Right-hand)
Margin Width
0.10 × D1
Back Taper
0.005" / 25 mm flute length

Grade Details - Key Grade Characteristics

PropertySpecificationPerformance Impact
Carbide Grain SizeUltra-fine grain tungsten carbide (0.5 μm)Higher toughness and edge stability at elevated speeds
Coating SystemAlTiN (Aluminum Titanium Nitride) PVD multi-layerSuperior heat resistance up to 900°C; reduced built-up edge
HardnessHRA 92.5 ± 0.5Excellent wear resistance in abrasive materials
Transverse Rupture Strength≥ 4,000 MPaResists chipping in interrupted cuts and cross-hole drilling
Recommended EnvironmentHigh-speed drilling, wet & dry machiningFlexible coolant strategies without compromising tool life

Grade Comparison Matrix

GradeSubstrateCoatingHardnessPrimary Use Case
TC (This Tool)Ultra-fine WCAlTiN PVDHRA 92.5Steel, Stainless, Cast Iron
PR1535Fine WCTiAlNHRA 91.8General-purpose steel machining
CA6535Submicron WCAlCrNHRA 93.0Hardened steel >50 HRC
GW15Coarse WCTiNHRA 90.5Cast iron and non-ferrous alloys

Chipbreaker Profile

The 1/8 TC drill utilizes a HF (High Feed) chipbreaker geometry engineered for the nominal diameter range. The flute profile incorporates a variable helix design with polished rake surfaces to minimize friction and promote efficient chip curling and evacuation.

ParameterValueFunction
Chipbreaker TypeHF (High Feed)Optimized chip segmentation for 1/8" diameter
Rake Angle (γ)8° ± 2°Balances edge strength with cutting efficiency
Flute Surface FinishRa 0.2 μmReduces chip adhesion and heat generation
Core Thickness0.22 × D1Maximizes rigidity while maintaining coolant flow

Recommended Applications & Workpiece Materials

  • Carbon & Alloy Steels (≤ 45 HRC): Excellent chip control and surface finish in 1045, 4140, 4340 grades
  • Stainless Steels: Austenitic (304, 316) and martensitic (410, 420) series with reduced built-up edge tendency
  • Cast Iron: Gray cast iron (Class 30-40) and ductile iron (65-45-12) with high wear resistance
  • Titanium Alloys: Ti-6Al-4V at moderate speeds with adequate coolant delivery
  • High-Temperature Alloys: Inconel 718 and Hastelloy at reduced parameters with rigid setup

Application Map by Operation

Operation TypeSuitabilityRecommended ConditionsExpected Tool Life
Through-Hole Drilling★★★★★ ExcellentStandard parameters per cutting dataHigh
Blind-Hole Drilling★★★★★ ExcellentReduce feed 10% in last 2×D; use peck cycleHigh
Cross-Hole Intersection★★★★☆ Very GoodReduce speed 15%, rigid toolholder requiredModerate-High
Stacked Plate Drilling★★★★☆ Very GoodConsistent entry/exit with clamping pressureModerate-High
Micro-Peck Drilling★★★☆☆ GoodPeck depth 0.5×D for holes >3×D deepModerate

Recommended Cutting Conditions

Workpiece MaterialHardnessCutting Speed Vc (m/min)Feed fn (mm/rev)Coolant
Low-Carbon Steel< 200 HB77-1210.08-0.14Wet/Dry*
Medium-Carbon Steel200-280 HB70-1100.08-0.15Wet preferred
Alloy Steel280-350 HB59-930.06-0.12Wet required
Stainless Steel (Austenitic)< 250 HB52-820.07-0.13Wet required
Cast Iron (Gray)180-260 HB70-1100.10-0.18Wet/Dry
Titanium Alloy Ti-6Al-4V< 350 HB35-550.05-0.10Wet required

*Dry machining requires stable machine spindle and rigid workholding. Adjust parameters based on machine rigidity and hole depth.

Operating Guidelines

  • Runout Limit: Maximum tool runout at the cutting edge should not exceed 0.01 mm (0.0004") to prevent uneven wear and premature failure.
  • Pecking Cycle: For holes deeper than 3×D, implement a peck cycle with retract to clear chips. Peck depth = 1.0×D for <5×D holes, 0.5×D for >5×D holes.
  • Coolant Pressure: Minimum 70 bar (1,000 psi) through-tool coolant recommended for holes >3×D in stainless and titanium.
  • Entry Angle: Ensure perpendicular entry (±1°) or use a spot drill to prevent chipping on inclined surfaces.
  • Tool Overhang: Minimize overhang to 4×D or less. Use hydraulic or shrink-fit holders for optimal rigidity.
  • Speed/Feed Ramp: Reduce feed by 30% for the first 1 mm of entry to stabilize the tool before full engagement.

Toolholder Compatibility

Toolholder TypeRecommended Model SeriesClamping ForceRunout Capability
ER Collet ChuckER16, ER20 Collet ChuckMedium≤ 0.015 mm @ 3×D
Hydraulic ChuckHydroForce Mini / StandardHigh≤ 0.005 mm @ 3×D
Shrink-Fit ChuckThermoGrip Slim / Heavy DutyVery High≤ 0.003 mm @ 3×D
Weldon Side-LockStandard DIN 1835-BMedium≤ 0.020 mm @ 3×D

Packaging & Ordering Information

ItemDetails
Catalog NumberSGS58415
Packaging Unit1 piece per plastic tube with protective end caps
Master Carton10 tubes per carton (anti-static foam lining)
BarcodeEAN-13 compatible (request specific code from sales)
StorageStore in original packaging at 15-25°C, humidity <60% RH
Shelf Life5 years from date of manufacture when unopened

Catalog Meta Data

AttributeValue
Product FamilyKyocera SGS Precision Tools - Solid Carbide Drill Series
Series DesignationSGS-584xx (2-Flute, TC Grade)
Manufacturing StandardISO 5419, DIN 1414, ANSI B94.11M
Country of OriginJapan
Quality CertificationISO 9001:2015 (Manufacturing), ISO 13485 (Medical-grade capability)
RoHS ComplianceYes - Directive 2011/65/EU compliant
REACH ComplianceYes - No SVHC substances above threshold
Last Catalog UpdateJune 2026

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Quality AssuranceGuaranteed Genuine Kyocera Components
This package contains a genuine Kyocera product manufactured according to strict global quality standards. Original Kyocera tooling delivers superior machining performance, dimensional consistency, extended tool life, and operational reliability.
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