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Kyocera 0,44 PR1225 SGM08085 2FL TA Drill - Stainless Steel

Kyocera 0,44 PR1225 SGM08085 2FL TA Drill - Stainless Steel
-40 %
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Kyocera 0,44 PR1225 SGM08085 2FL TA Drill - Stainless Steel
$10.08 USD
$16.80 USD
1 or more $10.08 USD
  • Stock: In Stock
  • Model: DRILL
  • Weight: 0.10kg
  • Manufactured: In Japan
  • Ships: Worldwide
  • Item Code: SGM08085
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Product Overview

The Kyocera 0,44mm SGM08085 is a precision micro solid carbide drill engineered for stainless steel applications. Featuring the PR1225 grade with PVD TiAlN coating, this 2-flute TA (through-coolant) design delivers exceptional hole quality, dimensional accuracy, and extended tool life in demanding micro-machining CNC environments. Optimized for high-speed machining centers, the SGM08085 ensures reliable performance across medical, electronics, aerospace, and precision engineering sectors where micro-hole drilling is critical.

ISO Designation Breakdown

Designation Element Value Description
Tool Type D Solid Carbide Micro Drill (ISO 5419)
Nominal Diameter 0,44 mm Micro cutting diameter per DIN 6537
Flute Length 11.5 mm Effective micro cutting depth capacity
Coolant Type TA (Through-Coolant) Internal coolant delivery for chip evacuation
ISO Code D0.44x11.5 Standardized micro tool reference

Engineering Dimensions & Geometry

Parameter Specification Tolerance
Cutting Diameter (D1) 0,44 mm h4 (±0.003 mm)
Overall Length (L1) 26.7 mm ±0.3 mm
Flute Length (L2) 11.5 mm ±0.2 mm
Shank Diameter (D2) 0.45 mm h6
Point Angle 140° ±1°
Helix Angle 30° ±1°
Number of Flutes 2 Standard micro drill
Coolant Hole Diameter 0.15-0.20 mm ±0.02 mm

Grade Details - Key Grade Characteristics

Property PR1225 Specification
Coating Technology PVD TiAlN
Carbide Substrate Fine carbide
Hardness 92.0 HRA
Coating Color Bronze
Max Operating Temperature 850°C
Primary Application Steel Machining

Grade Comparison Matrix

Grade Coating Hardness Best For
PR1225 PVD TiAlN 92.0 HRA Steel Machining
PR1535 PVD TiAlN 92.5 HRA Steel & Stainless Steel
CA6535 CVD TiCN+Al2O3 91.5 HRA Cast Iron & Hard Materials
PV720 PVD DLC 93.0 HRA Stainless & Non-ferrous

Chipbreaker Profile

The SGM08085 features an optimized 2-flute micro geometry with a precision-ground chipbreaker designed specifically for stainless steel at micro-scale. The parabolic flute profile ensures efficient chip evacuation from deep micro-holes, reduces cutting forces by up to 20%, and minimizes built-up edge (BUE) formation. The polished flute surface (Ra 0.1 μm) and through-coolant (TA) channels enhance chip flow and prevent material adhesion during high-speed micro-machining operations.

Feature Specification
Flute Profile Parabolic, super-polished
Chipbreaker Type Integral 2-flute open micro geometry
Surface Finish Ra 0.1 μm (flute), Ra 0.05 μm (margin)
Coolant Delivery Internal through-coolant (TA) axial channels

Recommended Applications & Workpiece Materials

Material Group ISO Code Machinability Recommended
Carbon Steel P1-P3 Excellent ✓ Yes
Alloy Steel P4-P6 Very Good ✓ Yes
Stainless Steel M1-M3 Good ✓ Yes
Cast Iron K1-K3 Good ✓ Yes
Aluminum N1-N3 Excellent △ Conditional
Hardened Steel (>45 HRC) H1-H3 Fair △ Conditional

Application Map by Operation

Operation Suitability Notes
Through-hole Micro Drilling ★★★★★ Optimal chip evacuation with TA coolant
Blind-hole Micro Drilling ★★★★☆ Use peck cycle for depths >3xD
Stack Micro Drilling ★★★★☆ Ensure proper clamping and alignment
Cross-hole Micro Drilling ★★★☆☆ Reduce feed by 40% at intersection
Enlarging ★★☆☆☆ Not recommended as primary use

Recommended Cutting Conditions

Material Cutting Speed Vc (m/min) Feed f (mm/rev) Depth of Cut ap
Carbon Steel 10-25 0.02-0.05 1.0-2.0xD
Alloy Steel 12-30 0.02-0.05 1.0-2.0xD
Stainless Steel 8-22 0.02-0.04 1.0-2.0xD
Cast Iron 15-35 0.03-0.07 1.0-2.5xD

Operating Guidelines

  • Always use high-pressure through-coolant (minimum 100 bar) for micro-drilling depths exceeding 2xD to ensure proper chip evacuation and heat dissipation from the cutting edge.
  • Maintain ultra-rigid toolholder and workpiece clamping. Minimum recommended spindle runout: 0.003 mm at the tool tip for micro-drills.
  • For peck drilling cycles on micro-holes, use a retract value of 0.1-0.2 mm and reduce feed by 30% at each peck entry to prevent drill breakage.
  • Ensure coolant concentration of 8-12% for water-miscible fluids; use neat oil for difficult-to-machine materials at micro-scale.
  • Inspect tool wear after every 20 holes; replace when flank wear exceeds 0.01 mm or when burr formation increases at hole exit.
  • Store micro tools in original packaging at 15-25°C with humidity below 50% to prevent corrosion of the precision ground edges.

Toolholder Compatibility

Holder Type Standard Compatibility
Hydraulic Chuck DIN 69893 ✓ Excellent (recommended for >3xD)
Shrink Fit Chuck DIN 69893 ✓ Excellent (best rigidity for micro tools)
Precision Collet (ER) DIN 6499 ✓ Good (use AA-grade collet, <3 μm runout)
Milling Chuck DIN 69893 ✓ Good
Drill Chuck (Keyless) DIN 238 ✗ Not recommended for micro drills

Packaging & Ordering Information

Item Details
MPN (Manufacturer Part Number) SGM08085
Quantity per Package 1 piece (individually packed in protective tube)
Packaging Type Anti-static plastic protective tube with foam insert
Label Information Barcode, diameter, grade, batch number, production date, inspection certificate
Minimum Order Quantity 1 piece
Bulk Order Discount Available for quantities of 50+ (contact sales)

Catalog Meta Data

Attribute Value
Product Series SGM TA Micro Solid Carbide Drill Series
Tool Category Rotating Tools > Micro Drills > Solid Carbide Through-Coolant
Manufacturer Kyocera Precision Tools (Japan)
Country of Origin Japan
Warranty Standard manufacturer warranty against material defects
Last Catalog Update 2026-06-01

All specifications are subject to standard manufacturing tolerances. For application-specific recommendations, consult Kyocera technical documentation or contact our engineering support team.

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.

🔹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.

🔹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.

For any technical or lead-time questions, feel free to contact our support desk.

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.

🔹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.

We sincerely appreciate your understanding as we continuously optimize our global product catalog.

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

🔹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.

🔹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.

🔹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.