BEYOND S10K-STWPR09 Internal Turning Tool Holder for TPMR 0902 Inserts
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⚠️ 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.
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.