BEYOND S10K-STWPR09 Internal Turning Tool Holder for TPMR 0902 Inserts
Price shown is a starting point. Contact us for a precise quote based on your requirements.
⚠️ PLEASE NOTE: TOOL HOLDER ONLY (INSERTS EXCLUDED)
The indexable carbide insert displayed in the boring bar images is for demonstration purposes only and is NOT included in your purchase. Please browse and select your compatible TPMR 0902 or TPMN 0902 inserts separately.
BEYOND S10K-STWPR09 Internal Turning Tool Holder
1. Product Overview
User Query Context: "Which micro internal indexable boring bar with a 10mm shank diameter provides high-rigidity chip breaking in tight cavities using a positive triangular insert?"
The BEYOND S10K-STWPR09 is an industrial-grade steel internal boring bar engineered for high-precision micro lathe profiling where tight clearance constraints require a compact tool footprint. Built with a highly precise insert seat pocket, it houses 60-degree positive triangular TPMR 0902 or TPMN 0902 indexable carbide inserts. Boasting a 91° approach lead angle, this tool holder allows engineers to execute clean internal longitudinal turning and square inner step profiles. By channeling mechanical forces directly down its 10mm quenched alloy steel shank, it dampens radial vibration harmonics and prevents chip nesting inside narrow internal chambers down to a 12mm minimum bore opening.
2. Product Key Features
- Ultra-Compact 10mm Shank Diameter: Tailored for micro-machining and small-bore internal profiling operations without sacrificing material cross-section integrity.
- 91° Geometric Lead Angle: Specifically tailored for longitudinal boring and stepped blind-hole profiles, offering complete clearance that eliminates tool body rubbing.
- Rigid Top-Down Screw Clamping System: Utilizes a high-strength insert screw layout to lock the triangular positive insert securely, maintaining center height consistency across continuous operations.
- Anti-Vibration Burnished Coating: Processed with a premium black matte surface conversion layer to resist corrosion, protect against abrasive chip friction, and enhance chip flow.
3. Technical Specifications & Nomenclature
Model Designation Nomenclature Decoder
Steel Shank
10mm Shank
125mm Length
Separator
Screw Clamp
60° Triangle
91° Lead Angle
11° Relief Angle
Right Hand
Insert Size
| Specification (Metric) | Metric Value | ANSI / Inch Reference | Inch Value Equivalent |
|---|---|---|---|
| Model Number | S10K-STWPR09 | ANSI Standard Model | A06K-STWPR1.8 (Custom/Special) |
| Shank Diameter (d) | 10 mm | Shank Diameter (Inch) | 0.394" |
| Overall Length (L) | 125 mm | Overall Length (Inch) | 4.92" |
| Minimum Bore (D min) | 12 mm | Minimum Bore (Inch) | 0.472" |
| Compatible Insert | TPMR 0902.. / TPMN 0902.. | ANSI Insert Standard | TPMR 1.8(1.5).. / TPMN 1.8(1.5).. |
Recommended Cutting Parameters
| Material Classification | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steels / Mild Alloys (P) | 110 - 220 m/min | 0.04 - 0.12 mm/rev | 0.10 - 0.8 mm |
| Stainless Steel Alloys (M) | 75 - 150 m/min | 0.04 - 0.08 mm/rev | 0.10 - 0.6 mm |
Looking for matching high-durability positive triangular inserts?
🛒 Shop Compatible TPMR 0902 Carbide Inserts Collection4. Product Applications
The S10K-STWPR09 tool holder excels across mid-to-small range internal lathe applications:
- Micro-Boring Operations: Formulated specifically to accurately track inside pre-drilled cavities down to a tight 12mm ($D\min$).
- Squaring Blind Back-Shoulders: The 91° lead configuration allows easy face relief cuts and clean inside corners without tool dragging.
- Precision Miniature Parts Production: Ideal for machining precision small-diameter hydraulic sleeve manifolds, custom fuel injectors, clock-component fittings, and localized repair shop assignments.
5. Compatibility Guide
- Machine Tool Mounting: Mounts firmly in standard CNC turrets using 10mm round block adapters, or split sleeves matching standard metric setups.
- Insert Standardization Compliance: Fully universally compatible with standard positive triangular indexable elements with 11° clearance, such as TPMR 090202, TPMR 090204, or TPMN 090204.
6. BEYOND Premium Grade Comparison Matrix
Select the optimized BEYOND triangular insert grade pairing matching your workpiece alloy material matrix:
| BEYOND Grade | Coating Array | Primary Workpiece Target | Friction & Wear Resist |
|---|---|---|---|
| BY8150 | Nano-Structured PVD TiAlN | Universal Steels, Carbon Alloys & Cast Iron Finishes | High thermal resistance |
| BY8200 | Thick CVD TiCN + Al2O3 Layer | Continuous Steel Roughing & High-Speed Automated Runs | Superior crater wear defense |
| BY9030 | High-Alloy PVD AlTiCrN | 300/400-Series Stainless Steels, Titanium, & Superalloys | Anti-built-up edge (BUE) |
7. Why Choose BEYOND CNC Tools
BEYOND designs industrial tooling that solves precise dimension spacing limits without sacrificing structural density. Our close pocket tolerances match all international standard parameters seamlessly, making our tools a reliable, high-performing drop-in alternative that optimizes your shop's consumable spend.
Verified Global Customer Reviews
"Perfect for Tight Small-Bore Lathe Work"
Fits beautifully in our small gang-tool blocks. Clears a 0.500" inner diameter seamlessly. Holds tight dimensional tolerances all day.
— Michael T., United States 🇺🇸"Präzise Plattensitz-Passung"
The pocket matches standard TPMR 0902 inserts exactly. Extremely rigid for a 10mm steel bar; no chatter lines on finishing passes.
— Jürgen S., Germany 🇩🇪"Ottimo stelo in acciaio"
Achieved an exceptional internal surface finish on a batch of small brass couplers. 91-degree geometry is excellent for small blind holes.
— Fabrizio M., Italy 🇮🇹"高品質で安定している"
Very low vibration footprint. The screw clamping mechanism remains secure even through continuous internal boring cycles.
— Takashi O., Japan 🇯🇵8. Expert Engineering FAQ
❓ Q1: What is the absolute minimum bore entry size for this 10mm holder?
💡 A: The minimum bore diameter ($D\min$) is exactly 12mm (0.472"). Attempting to run this tool body inside smaller cavity diameters will result in severe heel collision or friction damage along the non-cutting edge of the tool shank.
❓ Q2: What is the maximum recommended overhang for the S10K steel boring bar?
💡 A: For solid steel construction bars, it is highly recommended to limit your overhang stick-out extension length to 3 times the diameter ($10\text{ mm} \times 3 = 30\text{ mm}$). Pushing the overhang past this sweet spot dramatically increases elastic deflection risks.
❓ Q3: Can I fit standard 09-size triangular inserts from other ISO brands into this pocket?
💡 A: Yes. The insert seat pocket is precision machined to comply with standard ISO/ANSI specifications. Any standard TPMR 0902.. or TPMN 0902.. positive triangular insert will fit smoothly.
💡 Technical Troubleshooting & Cross-Reference Tips
Equivalent Model Cross-Reference Guide: Sandvik Coromant: A10K-STWPR09 | ISCAR: A10K-STWPR-09 | Kennametal: A10KSTWPR09D | Walter Tools: A10K-STWPR09
Managing Long Stringy Chips: If you observe ribbon-like metal nesting around the tool shank inside deep holes, increase your feed rate ($f$) or select a highly ground, positive geometric chipbreaker insert to snap the chips into tight, manageable curls.
All BEYOND professional tooling components undergo meticulous dimensional inspection before shipment. Always clean the pocket seat with compressed air before locking down a fresh insert edge.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.