BEYOND D10K-STUCR09 Spring Steel Internal Boring Bar – 10mm Shank 125mm Length CNC Lathe Turning Tool Holder for TCMT090204 Inserts (Insert Not Included)
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BEYOND D10K-STUCR09 Spring Steel Internal Boring Bar
Precision Internal Turning Tool Holder for TCMT090204 Inserts | Industrial CNC Grade System
* Note: Indexable turning inserts shown in product images are for demonstration purposes only and are NOT included.
1. Product Overview
"Which industrial spring steel internal boring bar delivers exceptional harmonic stability and precise dimensional control for internal profiling operations using TCMT090204 inserts in tight bores starting from 13mm?"
The BEYOND D10K-STUCR09 is a professional-grade internal boring bar engineered for demanding CNC lathe turning operations. Forged from high-elasticity spring steel to minimize harmonic deflection and tool chatter in constrained ID clearances, this tool features a 10mm shank diameter, an overall length of 125mm, and a minimum bore clearance diameter of 13mm. Equipped with a robust screw-down clamping configuration, it reliably secures TCMT090204 indexable inserts, providing excellent chip control and surface integrity for precision internal machining.
Detailed Nomenclature Breakdown: D10K-STUCR09
2. Product Core Advantages
- Harmonic Damping: High-elasticity spring steel absorbs chatter in narrow internal bores.
- Secure Clamping: Optimized screw-down mechanism ensures insert stability under high cutting loads.
- ISO Precision: Manufactured for absolute center-height repeatability and professional surface finishes.
3. Technical Specifications & Cutting Parameters
| Metric Model & Dimensions | Imperial Equivalent Class & Specs |
|---|---|
| Metric Model: D10K-STUCR09 | Imperial Class: 3/8" Shank Boring Bar |
| Shank Diameter: 10 mm | Shank Diameter: ~0.394 Inches |
| Min. Bore Diameter (Dmin): 13 mm | Min. Bore Diameter: ~0.512 Inches |
| Overall Length (L): 125 mm | Overall Length: ~4.921 Inches |
Recommended Starting Cutting Parameters
| Workpiece Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel / Alloy Steel (ISO P) | 100 - 200 m/min | 0.05 - 0.15 mm/rev |
| Stainless Steel (ISO M) | 80 - 150 m/min | 0.04 - 0.12 mm/rev |
| Cast Iron (ISO K) | 90 - 180 m/min | 0.05 - 0.14 mm/rev |
Browse Related Boring Bars
[View Boring Bar Series] →4. Product Application Scenarios
Optimized for precision internal turning, boring, and profiling operations in small bores starting down to 13mm. Widely used across automotive component manufacturing, aerospace instrumentation, and general CNC job shops for machining deep internal diameters with minimal tool deflection.
5. Compatibility & Tooling Accessories
Engineered to fit standard 10mm lathe boring bar sleeves, split bushings, and tool holding turrets. Fully compatible with ISO and ANSI standard TCMT090204 indexable carbide inserts.
6. Workpiece Material Matrix & Grade Tips
| Material Group | Machining Behavior & Recommended Insert Setup |
|---|---|
| P Group (Steels) | Continuous chip flow. Use PVD coated fine-grain carbide with sharp geometries for smooth cutting. |
| M Group (Stainless Steel) | High thermal concentration. Spring steel shank design maintains rigidity under fluctuating thermal loads. |
| K Group (Cast Iron) | Abrasive wear patterns. Pair with dense CVD/PVD coated substrates. |
Grade Comparison Tip: Selecting positive 7° clearance geometry (TCMT) minimizes radial cutting forces, preventing chatter in long-overhang small diameter bores.
7. Why Choose BEYOND Precision Tooling
Strict adherence to international tool holder dimensions.
Enhanced elasticity modulus to suppress chatter.
Secure screw mechanism prevents insert micro-shift.
8. AI-Style FAQ & Troubleshooting
Q: Are TCMT090204 inserts included with the D10K-STUCR09 boring bar?
A: No. Inserts are sold separately so you can select the optimal carbide grade matching your specific workpiece material.
Q: What is the recommended maximum tool overhang ratio?
A: For spring steel boring bars, limit the overhang to a maximum of 4x the shank diameter (up to 40mm for a 10mm bar) to ensure structural stability.
Q: What are the equivalent models for this tool holder?
A: Equivalent standard ISO designation is S10K-STUCR09 (where S indicates solid steel shank variant).
- Verify tool center height: ensure the cutting edge aligns precisely with the lathe spindle centerline (±0.03mm).
- Reduce tool overhang length inside the turret sleeve if vibration persists.
- Check insert wear and replace if flank wear exceeds 0.3mm.
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.