Kyocera 8,0 PR1535 SGS64850 DRILL - Steel Machining
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- Stock: In Stock
- Model: DRILL
- Weight: 0.10kg
- Manufactured: In Japan
- Ships: Worldwide
- Item Code: SGS64850
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Product Overview
The Kyocera 8,0 DRILL 3FL 5XD TB SGS64850 is a precision-engineered solid carbide drill featuring the high-performance PR1535 grade. Designed for demanding CNC machining operations, this 3-flute tool delivers exceptional hole quality, dimensional accuracy, and extended tool life in steel and ferrous alloy applications. The 5×D flute length enables deep-hole drilling without compromising stability or chip evacuation.
ISO Designation Breakdown
| Designator | Meaning | Value / Description |
|---|---|---|
| D | Nominal Diameter | 8,0 mm |
| 3FL | Number of Flutes | 3 Flutes |
| 5XD | Length-to-Diameter Ratio | 5 × D (Flute Length = 40.0 mm) |
| TB | Chipbreaker Geometry | TB Profile (Optimized for medium feed) |
| MPN | Manufacturer Part Number | SGS64850 |
Engineering Dimensions & Geometry
| Parameter | Symbol | Value | Tolerance |
|---|---|---|---|
| Cutting Diameter | Dc | 8.0 mm | h6 (7.991 / 8.000) |
| Flute Length | Lf | 40.0 mm | +0.3 / -0.3 mm |
| Overall Length | Lo | 75.0 mm | +0.5 / -0.5 mm |
| Shank Diameter | Ds | 8.0 mm | h6 |
| Point Angle | Σ | 140° | ±1° |
| Helix Angle | λ | 30° | ±2° |
| Number of Flutes | Z | 3 | — |
Grade Details — Key Grade Characteristics
The PR1535 grade is Kyocera's premier PVD-coated carbide substrate engineered for high-speed drilling in ferrous materials. It combines an ultra-fine tungsten carbide matrix with a multi-layer AlTiN coating to deliver superior thermal stability and wear resistance.
| Property | Specification | Performance Benefit |
|---|---|---|
| Carbide Substrate | Ultra-fine WC-Co (0.5 μm) | High transverse rupture strength; reduced micro-chipping |
| Coating System | AlTiN PVD (Multi-layer) | Oxidation resistance up to 900°C; extended crater wear life |
| Hardness | 92.5 HRA | Maintains edge integrity at elevated cutting speeds |
| Coating Color | Black-Bronze | Visual wear indicator for easy tool-life monitoring |
| Application Range | ISO P05–P30 | Versatile across low-alloy to high-strength steels |
Grade Comparison Matrix
| Grade | Substrate | Coating | Hardness | Steel | Stainless | Cast Iron |
|---|---|---|---|---|---|---|
| PR1535 ★ | Ultra-fine WC | AlTiN PVD | 92.5 HRA | Excellent | Very Good | Good |
| PR1525 | Fine WC | TiAlN PVD | 91.8 HRA | Very Good | Good | Good |
| PR1705 | Submicron WC | AlCrN PVD | 93.0 HRA | Excellent | Excellent | Very Good |
★ = Recommended grade for this application. Color coding: Green = Excellent, Blue = Very Good, Orange = Good.
Chipbreaker Profile
The TB chipbreaker is a medium-feed geometry optimized for 8.0 mm diameter drilling. It features a balanced land-width ratio and a slightly recessed rake face that promotes controlled chip curl and efficient evacuation through the 30° helical flutes.
- Rake Angle (γ): 8° positive for reduced cutting forces and improved surface finish
- Land Width: 0.15 × Dc for edge stability in interrupted cuts
- Chipbreaker Depth: 0.08 mm — suitable for feed rates 0.12–0.20 mm/rev
- Margin Design: Dual-margin with 0.05 mm hone for burnished hole walls
Recommended Applications & Workpiece Materials
| Material Group | ISO Code | Examples | Suitability |
|---|---|---|---|
| Carbon & Low-Alloy Steels | P.1 – P.3 | AISI 1045, 4140, 4340 | Excellent |
| Stainless Steels (Austenitic) | M.1 – M.2 | AISI 304, 316, 321 | Very Good |
| Stainless Steels (Martensitic) | M.3 – M.4 | AISI 410, 420, 17-4PH | Very Good |
| Cast Irons (Gray & Ductile) | K.1 – K.3 | GG25, GGG50, GGG70 | Good |
| Tool & High-Speed Steels | P.4 – P.5 | H13, D2, M2 (annealed) | Excellent |
Application Map by Operation
| Operation | Suitability | Notes |
|---|---|---|
| Through-Hole Drilling | ★★★★★ | Optimal chip evacuation; use standard peck cycle for L/D > 3 |
| Blind-Hole Drilling | ★★★★★ | Reduce feed to 70% at 1×D remaining depth; ensure adequate coolant pressure |
| Stack Drilling | ★★★★☆ | Use pilot hole or reduced entry speed to prevent wandering |
| Cross-Hole Drilling | ★★★☆☆ | Reduce speed by 20%; use rigid toolholder (hydraulic or shrink fit) |
| Helical Interpolation | ★★★☆☆ | Not recommended; use dedicated end-mill for hole enlargement > 1.5×D |
Recommended Cutting Conditions
Parameters optimized for PR1535 in AISI 1045 Carbon Steel (HB 180–220). Adjustments for other materials are noted in parentheses.
| Parameter | Minimum | Recommended | Maximum |
|---|---|---|---|
| Cutting Speed (Vc) | 80 m/min | 100 m/min | 120 m/min |
| Spindle Speed (n) | 3183 RPM | 3978 RPM | 4774 RPM |
| Feed per Flute (fz) | 0.08 mm/z | 0.11 mm/z | 0.15 mm/z |
| Feed Rate (Vf) | 763 mm/min | 1313 mm/min | 2148 mm/min |
| Axial Depth (ap) | 1.0 × Dc | 3.0 × Dc | 5.0 × Dc (max 40.0 mm) |
Material adjustments: Stainless steel −20% Vc; Cast iron +10% Vc, −15% fz; Hardened steel (>45 HRC) −30% Vc, −25% fz.
Operating Guidelines
- Coolant: High-pressure internal coolant (70–100 bar) is strongly recommended for holes deeper than 3×D. Use water-miscible cutting fluid with 8–10% concentration.
- Peck Cycle: For 5×D drilling, employ a peck depth of 1.5–2.0×D with full retract every 3 pecks to clear chips and allow coolant penetration.
- Entry Strategy: Use a chamfer or center drill (90°) to prevent walking. Reduce feed to 50% for the first 1×D engagement.
- Exit Strategy: Reduce feed to 60% when exiting through-holes to prevent burr formation and edge chipping.
- Tool Life Monitoring: Replace when flank wear (VB) exceeds 0.15 mm or when surface roughness (Ra) degrades above 1.6 μm.
- Storage: Store in original packaging away from humidity. Avoid contact between cutting edges to prevent micro-chipping.
Toolholder Compatibility
| Toolholder Type | Compatibility | Recommendation |
|---|---|---|
| Hydraulic Chuck (HSK-A63) | Excellent | Best for 5×D; provides damping and runout < 3 μm |
| Shrink Fit (HSK-A63) | Excellent | Maximum rigidity; ideal for high-speed applications |
| Precision Collet (ER32, TG) | Very Good | Ensure collet is < 0.05 mm worn; use nut torque 80–100 Nm |
| Side-Lock (Weldon) | Good | Acceptable for shorter holes; check for runout before use |
| Modular Drill Chuck | Fair | Not recommended for 5×D; excessive runout reduces tool life |
Packaging & Ordering Information
| Item | Details |
|---|---|
| Manufacturer Part Number | SGS64850 |
| Quantity per Package | 1 piece (individually sealed in protective tube) |
| Packaging Type | Reinforced plastic tool tube with foam insert; labeled with barcode and ISO specifications |
| Minimum Order Quantity | 1 piece |
| Warranty | Full manufacturer defect warranty; contact support for application-related issues |
Catalog Meta Data
| Field | Value |
|---|---|
| Product Series | Kyocera SGS Solid Carbide Drill Series |
| Series Code | SGS-3FL-5XD-TB |
| Replacement Grade | PR1535 (standard); PR1525 (economy); PR1705 (high-performance stainless) |
| Tool Category | Solid Carbide Drill — 3 Flute — 5×D — Through-Coolant Ready |
| Country of Manufacture | Japan |
| Certification | ISO 9001:2015 (Manufacturing); DIN 6537 (Geometry Standard) |
All specifications are subject to standard manufacturing tolerances. For application-specific recommendations or technical support, please contact our CNC tooling specialists.
✓ Genuine Kyocera Product
| Manufacturer | Kyocera Corporation |
|---|---|
| Status | Verified Original Product |
| Quality Assurance | Guaranteed Genuine Kyocera Components |
発送・在庫情報
We ship worldwide through our strategic global logistics network. Products are dispatched directly from our international distribution facilities to ensure efficient delivery and customs clearance.
-
Stock Enquiries (在庫確認):
Contact our logistics team at sales.kyotow@gmail.com for real-time inventory status and dispatch location information. -
In-Stock Items (在庫あり):
Normally dispatched within 3 business days from the nearest regional warehouse. -
Factory Procurement (取寄せ):
Manufacturing and dispatch typically require 4–5 weeks. Once production begins, cancellations cannot be accommodated. -
Authenticity Guarantee (本物保証):
All products sold by Kyotow are 100% genuine and sourced through authorized Japanese and international distribution channels.
正確な製品情報
Following the Japanese philosophy of Monozukuri (物の作り), we strive to maintain exceptional technical accuracy throughout our product catalog.
- Confirm dimensions, geometry, coating, and grade using the official Kyocera item code.
- Technical datasheets are available upon request.
- For technical clarification contact sales.kyotow@gmail.com.
返品・キャンセルポリシー
-
100% Accuracy Guarantee:
Full refund or replacement will be provided if the verified Kyocera item received differs from the official item code specified in your order confirmation. -
Order Finality:
Due to automated procurement systems connected directly to global factory distribution channels, orders cannot be modified or cancelled once processing has commenced. -
Technical Assistance:
Please verify machine compatibility, insert geometry, coating, and application grade before placing your order.
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All international payments are securely processed through PayPal, ensuring maximum transaction security and customer protection.
国際スピード郵便
✓ Full Shipment Tracking
✓ Global Logistics Network
✓ Flat Worldwide Shipping Rate: USD $50
Orders are shipped through our DHL Express corporate account from distribution facilities across Asia, Europe, and China for reliable international delivery.
Need Technical Assistance?
Contact our industrial tooling specialists for application support, tooling recommendations, datasheets, and compatibility verification.
sales.kyotow@gmail.comDirect 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。
Domestic Sourced
Procured straight from Japan's local wholesale networks to capture maximum market arbitrage.
100% Genuine
Zero counterfeit risk. All items are brand-new, authentic factory-sealed Japanese stock.
No Regional Markups
We bypass Western corporate sales teams and localized regional overhead costs entirely.
