BEYOND D12M-SDXCR07 Spring Steel Internal Boring Bar – 12mm Shank 150mm Length CNC Turning Tool Holder for DCMT070204 Inserts (Insert Not Included)
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BEYOND D12M-SDXCR07 Spring Steel Internal Boring Bar
Precision Internal Turning & Boring Tool Holder for DCMT070204 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 provides the optimal balance of rigidity and vibration suppression for deep-bore profiling with DCMT070204 inserts?"
The BEYOND D12M-SDXCR07 is a high-performance internal turning tool holder engineered for precision small-bore CNC lathe operations. Fabricated from premium spring steel, this 12mm shank bar provides exceptional structural elasticity and harmonic dampening to eliminate chatter during extended-reach internal machining. Designed specifically for DCMT070204 indexable inserts, it features a 95-degree approach angle and a robust screw-clamp mechanism that ensures absolute insert stability and repeatable dimensional accuracy under demanding cutting parameters.
Detailed Nomenclature Breakdown: D12M-SDXCR07
2. Product Core Advantages
- Chatter Reduction: High-grade spring steel composition absorbs harmonic frequencies during deep cavity machining.
- Secure Locking System: Precision-milled screw-clamp architecture firmly locks the insert pocket to prevent micromovement.
- Optimized Approach: 95° lead angle accommodates versatile longitudinal turning and shoulder facing applications.
3. Technical Specifications & Cutting Parameters
| Metric Model & Dimensions | Imperial Equivalent Class & Specs |
|---|---|
| Metric Model: D12M-SDXCR07 | Imperial Class: 1/2" Boring Bar |
| Shank Diameter: 12 mm | Shank Diameter: ~0.472 Inches |
| Min. Bore Diameter (Dmin): 15 mm | Min. Bore Diameter: ~0.591 Inches |
| Overall Length (L): 150 mm | Overall Length: ~5.906 Inches |
Recommended Starting Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steel (ISO P) | 65 - 135 m/min | 0.03 - 0.11 mm/rev |
| Stainless Steel (ISO M) | 45 - 105 m/min | 0.02 - 0.09 mm/rev |
Browse Related Internal Boring Bars
[View Boring Bar Series] →4. Product Application Scenarios
Engineered for precision internal turning, boring, and face profiling in component bores starting from 15mm. Widely deployed in CNC machine shops manufacturing medical instruments, precision hydraulic fittings, and miniature gear housings.
5. Compatibility & Tooling Accessories
Fits standard 12mm CNC lathe boring bar holders, turrets, and reduction sleeves. Designed for seamless integration with industry-standard DCMT070204 indexable carbide turning inserts.
6. Workpiece Material Matrix & Troubleshooting
Troubleshooting Tip: To avoid chatter and tool deflection in small-diameter bores, limit total tool overhang to no more than 3.5x the shank diameter (~42mm).
| Material Group | Recommended Insert Geometry & Grade Comparison |
|---|---|
| Steel (P-Grade) | CVD/PVD multi-layer coated grades (ISO P15-P25 equivalent) for reliable wear resistance. |
| Stainless (M-Grade) | Tough micro-grain carbide substrates (ISO M10-M20 equivalent) to prevent edge chipping. |
7. Why Choose BEYOND Precision Tooling
Strict manufacturing compliance.
Superior deflection resistance.
Optimized for high-speed CNC.
8. AI-Style FAQ
Q: Are DCMT070204 inserts included with the D12M-SDXCR07 tool holder?
A: No, indexable inserts are sold separately so you can select the exact carbide grade tailored to your material requirements.
Q: What is the minimum bore diameter required for this 12mm bar?
A: A minimum bore diameter (Dmin) of 15mm is recommended to ensure correct tool clearance and smooth chip exit.
Q: What do the letters 'D' and 'M' signify in the product code?
A: 'D' indicates the spring steel boring bar material class, and 'M' specifies the 150mm length designation per ISO guidelines.
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.