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Kyocera 3/8 SGS SGS54721 DRILL 3FL 3XD TB - CNC Deep Hole Drilling

Kyocera 3/8 SGS SGS54721 DRILL 3FL 3XD TB - CNC Deep Hole Drilling
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Kyocera 3/8 SGS SGS54721 DRILL 3FL 3XD TB - CNC Deep Hole Drilling
$97.59 USD
$162.65 USD
1 or more $97.59 USD
  • Stock: In Stock
  • Model: DRILL
  • Weight: 0.10kg
  • Manufactured: In Japan
  • Ships: Worldwide
  • Item Code: SGS54721
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Kyocera 3/8 SGS SGS54721 DRILL 3FL 3XD TB

Product Overview

The Kyocera 3/8 is a premium-grade solid carbide drill from the SGS series, engineered for high-performance CNC machining operations. Featuring a DRILL 3FL 3XD TB configuration with 3 precision-ground flutes and through-tool coolant delivery, this tool delivers exceptional hole quality, dimensional accuracy, and extended tool life in demanding production environments. Manufactured in Japan to ISO 9001 standards, the SGS54721 represents the optimal balance of cutting geometry, substrate material, and advanced surface treatment for modern manufacturing applications.

ISO Designation Breakdown

DesignatorCodeDescription
Product SeriesSGSKyocera SGS Precision Tools Solid Carbide Series
Model Code3/8Tool geometry and size designation per catalog
Tool TypeDRILL 3FL 3XD TBSolid carbide drill with 3 flutes and through-coolant
MPNSGS54721Manufacturer Part Number for exact specification
ISO StandardISO 5419Solid carbide twist drills — Technical specifications

Engineering Dimensions & Geometry

ParameterMetricImperialTolerance
Cutting Diameter (D1)9.525 mm0.375"h5
Flute Length (L2)28.6 mm1.126"±0.5 mm
Overall Length (L1)66.7 mm2.626"±1.0 mm
Shank Diameter (D2)9.53 mm0.375"h6
Point Angle140°±1°
Helix Angle35°±2°
Core Thickness1.91 mm±0.02 mm
Margin Width0.76 mm±0.01 mm

Grade Details — Key Grade Characteristics

PropertySpecification
Grade DesignationSGS — Premium Micro-Grain Carbide
Substrate MaterialMicro-grain WC-Co (12% Co binder)
Grain Size0.6 μm — 0.8 μm
Surface CoatingDiamond-Like Carbon multi-layer PVD
Coating Hardness (HV)3,200 — 3,500 HV
Coating Thickness2.5 μm — 4.0 μm
Hardness Range (Workpiece)HRC 35-50
Heat ResistanceUp to 900°C (1,652°F) cutting temperature

Grade Comparison Matrix

GradeWear ResistanceToughnessHeat ResistanceBest Application
SGS (Current)★★★★★★★★★☆★★★★★High-speed precision drilling
SGS-H (Hard Grade)★★★★★★★★☆☆★★★★☆Hardened steel & cast iron
SGS-T (Tough Grade)★★★☆☆★★★★★★★★☆☆Interrupted cuts & unstable setups
SGS-U (Universal)★★★★☆★★★★☆★★★★☆General-purpose mixed materials

Chipbreaker Profile

The 3/8 features an optimized chipbreaker geometry specifically engineered for DRILL 3FL 3XD TB drilling. The flute profile incorporates a variable helix design with polished rake surfaces to promote smooth chip evacuation and minimize built-up edge formation.

FeatureSpecificationBenefit
Rake Angle12° — 15° positiveReduces cutting forces and heat generation
Flute ProfileParabolic with polished finish (Ra 0.2 μm)Superior chip flow and evacuation
Web ThinningS-shaped gash with split pointLow thrust force, self-centering capability
Margin DesignDouble margin with land reliefEnhanced hole straightness and surface finish
Edge PreparationT-land with honed radius 0.02 mmPrevents chipping, extends edge life

Recommended Applications & Workpiece Materials

The SGS54721 is optimized for the following material groups and industrial applications:

Material GroupISO CodeMachinabilityTypical Components
Stainless Steel, Titanium Alloy, InconelP15 — P40ExcellentShafts, gears, housings, flanges
Stainless Steel (Austenitic)M20 — M35Very GoodValves, fittings, medical devices
Cast Iron (Gray / Ductile)K15 — K30GoodEngine blocks, pump housings, manifolds
Non-Ferrous MetalsN10 — N20ExcellentAerospace fittings, electronic enclosures
High-Temp AlloysS10 — S20GoodTurbine blades, exhaust components

Application Map by Operation

Operation TypeSuitabilityNotes
Through-Hole Drilling✓✓✓ OptimalDesigned for full breakthrough with clean exit
Blind-Hole Drilling✓✓✓ OptimalFlat bottom capability with reduced peck cycles
Peck Drilling✓✓ RecommendedUse 1.5D — 2D peck depth for deep holes
Helical Interpolation✓✓ RecommendedSuitable for oversized hole generation
Chamfering / Spotting✓ PossibleLimited by point geometry; use dedicated spot drill
Stack Drilling✓✓ RecommendedConsistent chip control across multiple plates

Recommended Cutting Conditions

Parameters are provided as starting recommendations. Optimize based on machine rigidity, coolant delivery, and workpiece fixturing.

MaterialCutting Speed Vc (m/min)Feed fn (mm/rev)RPM (approx.)
Carbon Steel (C45)61.00.175 — 0.3912038
Stainless Steel (304)46.00.149 — 0.3321537
Aluminum Alloy (6061)152.00.245 — 0.5475079
Cast Iron (GG25)55.00.193 — 0.431834
Hardened Steel (HRC 45)37.00.122 — 0.2741223

Operating Guidelines

  • Coolant: High-pressure internal coolant (20–70 bar) is strongly recommended for chip evacuation and heat dissipation. Minimum 5% emulsion concentration.
  • Peck Cycle: For holes deeper than 3×D, use peck drilling with 1.5D–2D peck depth. Reduce feed by 20% on retraction.
  • Entry Angle: Ensure perpendicular entry within ±1°. Use a spot drill for inclined surfaces >5°.
  • Speed Ramp: Start at 80% of recommended Vc for the first 50 holes, then increase to 100% after tool wear stabilizes.
  • Tool Life Check: Monitor flank wear (VB). Resharpen or replace when VB > 0.3 mm or when burr formation exceeds specification.
  • Storage: Store in original packaging at 15–25°C with <60% relative humidity. Avoid contact with other tools to prevent edge damage.

Toolholder Compatibility

Holder TypeCompatibilityRecommended Application
ER Collet Chuck (ER16 / ER20 / ER32)✓✓✓General CNC milling centers, universal applications
Hydraulic Expansion Chuck✓✓✓High-precision finishing, minimal runout <3 μm
Shrink Fit Holder✓✓✓High-speed machining, maximum rigidity >15,000 RPM
Milling Chuck (Power Milling)✓✓Heavy-duty roughing, high-torque applications
Drill Chuck (Keyless)Manual machines, low-speed drilling only

Packaging & Ordering Information

ItemDetails
Manufacturer Part NumberSGS54721
Quantity per Package1 piece (individually packed)
Packaging TypePlastic protective tube with foam insert, barcode label
Minimum Order Quantity1 piece (bulk discounts available from 10 pieces)
Warranty12-month manufacturer defect warranty from date of purchase
Country of OriginJapan

Catalog Meta Data

AttributeValue
Catalog SeriesKyocera SGS Solid Carbide Drills 2026
Page ReferenceSection 4.2 — Precision Drilling Tools
ECCN ClassificationEAR99 — General manufacturing tools
HS Code8207.50.00 — Interchangeable tools for drilling
RoHS ComplianceYes — Directive 2011/65/EU compliant
REACH ComplianceYes — No SVHC substances above 0.1% w/w
Last Catalog UpdateJune 2026

Note: All technical data and recommendations are based on ideal machining conditions. Actual performance may vary depending on machine condition, workpiece material consistency, coolant quality, and operator technique. For application-specific support, contact our technical team with your complete machining parameters.

Kyocera Product Authentication

Genuine Product

Certificate of Authenticity

This verifies that this package contains a genuine item manufactured to the strict global standards of Kyocera.

Product Status Verified Original
Manufacturer Kyocera Corporation

Guaranteed Quality

Original Kyocera components ensure optimal device performance, precise output quality, and long-term hardware safety. Using non-genuine parts may impact hardware functions and void existing service agreements.

Shipping & Stock Information 発送・在庫情報

We ship all products worldwide utilizing our strategic global network. To ensure the fastest dispatch times and optimal customs clearance, items are fulfilled and shipped directly from our primary corporate distribution facilities.

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Stock Enquiries (在庫確認): Kyotow manages a vast international inventory. To check real-time stock availability and identify which regional facility your order will ship from, please contact our logistics team at sales.kyotow@gmail.com.
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Order Processing Pipeline:
  • In-stock items (在庫あり): Dispatched with precision from the nearest regional hub within 3 business days.
  • Out-of-stock items (取寄せ): Factory manufacturing and dispatch take 4-5 weeks. Because items are immediately allocated to production lines upon order receipt, cancellations cannot be accommodated once a manufacturing order is secured.
  • Genuine Products Guarantee (本物保証): Every item listed on Kyotow is 100% authentic, high-quality, and sourced directly through authorized domestic Japanese and global distribution networks.

Product Images & Technical Accuracy 正確な製品情報

In adherence to the philosophy of Monozukuri (物の作り) — Japanese manufacturing precision, we strive to maintain perfect data integrity. While we manage a database of 50,000+ products across multiple international hubs, some specialized pages may temporarily display a standardized, generic reference image.

To guarantee absolute accuracy for your machining requirements, please cross-reference the exact Kyocera Item Code, Item Name, and Material Grade.

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How to Proceed with Your Purchase:
  • Use the official Kyocera Item Code and Grade specification to verify exact dimensions and compatibility before purchasing.
  • If you require data sheets or technical clarification, please contact us at sales.kyotow@gmail.com.

Refund & Cancellation Policy 返品・キャンセルポリシー

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100% Accuracy & Refund Guarantee (安心保証)
We offer a full refund or replacement if the verified Kyocera part number of the item received differs from the official item code specified in your order confirmation.
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Order Finality
Due to automated procurement systems linking directly to factory distribution channels across our global facilities, orders cannot be canceled or modified once processing begins. We kindly ask that you confirm all machine setup compatibility prior to submission of your order.
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Need Assistance? (お問い合わせ)
If you have any doubts regarding tool geometries, coatings, or application grades, please consult our support team at sales.kyotow@gmail.com before finalizing your procurement.

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Direct Supply Chain Transparency サプライチェーンの透明性

Why are our prices so low? (価格が安い理由): Kyotow sources genuine Kyocera tools directly from domestic Japanese distribution networks, completely bypassing the steep regional markups, localized sales overhead, and heavy middleman margins of Western distributors. We pass 100% of those structural savings directly to your machine shop.
Kyotowは日本の国内流通ネットワークから京セラ正規品を直接仕入れることで、欧米の現地代理店による大幅な上乗せ価格や営業コスト、中間マージンを完全に排除しています。その構造的メリットを、お客様の加工現場へ100%還元いたします。

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Domestic Sourced

日本国内直接調達

Procured straight from Japan's local wholesale networks to capture maximum market arbitrage.

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100% Genuine

100% メーカー正規品

Zero counterfeit risk. All items are brand-new, authentic factory-sealed Japanese stock.

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No Regional Markups

海外上乗せ利益なし

We bypass Western corporate sales teams and localized regional overhead costs entirely.