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

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- 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
| Designator | Code | Description |
|---|---|---|
| Product Series | SGS | Kyocera SGS Precision Tools Solid Carbide Series |
| Model Code | 3/8 | Tool geometry and size designation per catalog |
| Tool Type | DRILL 3FL 3XD TB | Solid carbide drill with 3 flutes and through-coolant |
| MPN | SGS54721 | Manufacturer Part Number for exact specification |
| ISO Standard | ISO 5419 | Solid carbide twist drills — Technical specifications |
Engineering Dimensions & Geometry
| Parameter | Metric | Imperial | Tolerance |
|---|---|---|---|
| Cutting Diameter (D1) | 9.525 mm | 0.375" | h5 |
| Flute Length (L2) | 28.6 mm | 1.126" | ±0.5 mm |
| Overall Length (L1) | 66.7 mm | 2.626" | ±1.0 mm |
| Shank Diameter (D2) | 9.53 mm | 0.375" | h6 |
| Point Angle | 140° | ±1° | |
| Helix Angle | 35° | ±2° | |
| Core Thickness | 1.91 mm | — | ±0.02 mm |
| Margin Width | 0.76 mm | — | ±0.01 mm |
Grade Details — Key Grade Characteristics
| Property | Specification |
|---|---|
| Grade Designation | SGS — Premium Micro-Grain Carbide |
| Substrate Material | Micro-grain WC-Co (12% Co binder) |
| Grain Size | 0.6 μm — 0.8 μm |
| Surface Coating | Diamond-Like Carbon multi-layer PVD |
| Coating Hardness (HV) | 3,200 — 3,500 HV |
| Coating Thickness | 2.5 μm — 4.0 μm |
| Hardness Range (Workpiece) | HRC 35-50 |
| Heat Resistance | Up to 900°C (1,652°F) cutting temperature |
Grade Comparison Matrix
| Grade | Wear Resistance | Toughness | Heat Resistance | Best 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.
| Feature | Specification | Benefit |
|---|---|---|
| Rake Angle | 12° — 15° positive | Reduces cutting forces and heat generation |
| Flute Profile | Parabolic with polished finish (Ra 0.2 μm) | Superior chip flow and evacuation |
| Web Thinning | S-shaped gash with split point | Low thrust force, self-centering capability |
| Margin Design | Double margin with land relief | Enhanced hole straightness and surface finish |
| Edge Preparation | T-land with honed radius 0.02 mm | Prevents chipping, extends edge life |
Recommended Applications & Workpiece Materials
The SGS54721 is optimized for the following material groups and industrial applications:
| Material Group | ISO Code | Machinability | Typical Components |
|---|---|---|---|
| Stainless Steel, Titanium Alloy, Inconel | P15 — P40 | Excellent | Shafts, gears, housings, flanges |
| Stainless Steel (Austenitic) | M20 — M35 | Very Good | Valves, fittings, medical devices |
| Cast Iron (Gray / Ductile) | K15 — K30 | Good | Engine blocks, pump housings, manifolds |
| Non-Ferrous Metals | N10 — N20 | Excellent | Aerospace fittings, electronic enclosures |
| High-Temp Alloys | S10 — S20 | Good | Turbine blades, exhaust components |
Application Map by Operation
| Operation Type | Suitability | Notes |
|---|---|---|
| Through-Hole Drilling | ✓✓✓ Optimal | Designed for full breakthrough with clean exit |
| Blind-Hole Drilling | ✓✓✓ Optimal | Flat bottom capability with reduced peck cycles |
| Peck Drilling | ✓✓ Recommended | Use 1.5D — 2D peck depth for deep holes |
| Helical Interpolation | ✓✓ Recommended | Suitable for oversized hole generation |
| Chamfering / Spotting | ✓ Possible | Limited by point geometry; use dedicated spot drill |
| Stack Drilling | ✓✓ Recommended | Consistent chip control across multiple plates |
Recommended Cutting Conditions
Parameters are provided as starting recommendations. Optimize based on machine rigidity, coolant delivery, and workpiece fixturing.
| Material | Cutting Speed Vc (m/min) | Feed fn (mm/rev) | RPM (approx.) |
|---|---|---|---|
| Carbon Steel (C45) | 61.0 | 0.175 — 0.391 | 2038 |
| Stainless Steel (304) | 46.0 | 0.149 — 0.332 | 1537 |
| Aluminum Alloy (6061) | 152.0 | 0.245 — 0.547 | 5079 |
| Cast Iron (GG25) | 55.0 | 0.193 — 0.43 | 1834 |
| Hardened Steel (HRC 45) | 37.0 | 0.122 — 0.274 | 1223 |
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 Type | Compatibility | Recommended 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
| Item | Details |
|---|---|
| Manufacturer Part Number | SGS54721 |
| Quantity per Package | 1 piece (individually packed) |
| Packaging Type | Plastic protective tube with foam insert, barcode label |
| Minimum Order Quantity | 1 piece (bulk discounts available from 10 pieces) |
| Warranty | 12-month manufacturer defect warranty from date of purchase |
| Country of Origin | Japan |
Catalog Meta Data
| Attribute | Value |
|---|---|
| Catalog Series | Kyocera SGS Solid Carbide Drills 2026 |
| Page Reference | Section 4.2 — Precision Drilling Tools |
| ECCN Classification | EAR99 — General manufacturing tools |
| HS Code | 8207.50.00 — Interchangeable tools for drilling |
| RoHS Compliance | Yes — Directive 2011/65/EU compliant |
| REACH Compliance | Yes — No SVHC substances above 0.1% w/w |
| Last Catalog Update | June 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.
Certificate of Authenticity
This verifies that this package contains a genuine item manufactured to the strict global standards of Kyocera.
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.
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- 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.
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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.
- 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
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.
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.
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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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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Procured straight from Japan's local wholesale networks to capture maximum market arbitrage.
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Zero counterfeit risk. All items are brand-new, authentic factory-sealed Japanese stock.
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