BEYOND D12M-SNGR09 Spring Steel Internal Boring Bar – 12mm Shank 160mm Length CNC Grooving and Threading Tool Holder for 9GR Inserts (Insert Not Included)
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BEYOND D12M-SNGR09 Spring Steel Internal Grooving Boring Bar
Precision Internal Grooving & Profiling Tool Holder for 9GR Inserts | Industrial CNC Grade System
* Note: Indexable grooving inserts shown in product images are for demonstration purposes only and are NOT included.
1. Product Overview
"Which industrial spring steel internal grooving boring bar provides maximum stability and vibration control for ultra-small bore profiling when paired with 9GR inserts?"
The BEYOND D12M-SNGR09 is a high-performance, industrial-grade internal grooving and threading boring bar designed specifically for micro-diameter CNC lathe operations. Built from high-grade resilient spring steel, this tool holder effectively absorbs harmonic vibrations and minimizes deflection in confined internal spaces. Featuring a compact 12mm shank diameter and a 160mm overall length, it handles intricate internal cavities with ease. The precision-machined clamping pocket secures 9GR indexable inserts tightly, guaranteeing exceptional positional repeatability and high-accuracy groove profiles.
Detailed Nomenclature Breakdown: D12M-SNGR09
2. Product Core Advantages
- Micro-Diameter Resilience: Spring steel core provides optimal stiffness-to-weight ratio for fine inner bore machining.
- Secure Insert Seat: High-precision locking screw configuration prevents micromovement under radial cutting stresses.
- Enhanced Chip Clearance: Designed to seamlessly pair with 9GR geometry for clean chip evacuation and smooth surface finishes.
3. Technical Specifications & Cutting Parameters
| Metric Model & Dimensions | Imperial Equivalent Class & Specs |
|---|---|
| Metric Model: D12M-SNGR09 | Imperial Class: 15/32" Shank Grooving Bar |
| Shank Diameter: 12 mm | Shank Diameter: ~0.472 Inches |
| Min. Bore Diameter (Dmin): 16 mm | Min. Bore Diameter: ~0.630 Inches |
| Overall Length (L): 160 mm | Overall Length: ~6.299 Inches |
Recommended Starting Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steel (ISO P) | 70 - 130 m/min | 0.02 - 0.05 mm/rev |
| Stainless Steel (ISO M) | 50 - 100 m/min | 0.015 - 0.04 mm/rev |
Browse Related Grooving Bars & Inserts
[View Grooving Bar Series] →4. Product Application Scenarios
Ideal for precision internal grooving, face grooving, and thread-relief machining in tight internal bores starting from 16mm. Crucial for miniature CNC lathe applications and complex medical or aerospace component turning.
5. Compatibility & Tooling Accessories
Designed to fit standard 12mm lathe tool holding blocks and precision split sleeves. Fully compatible with industrial standard 9GR series indexable grooving inserts.
6. Workpiece Material Matrix & Troubleshooting
Troubleshooting Tip: With a slender 12mm profile, keep tool overhang under 3x shank diameter (~36mm) to completely eliminate deflection risk during deep-bore operations.
| Material Group | Recommended Insert Geometry & Grade Comparison |
|---|---|
| Steel (P-Grade) | Sharp positive rake insert geometry (Equivalent to P10-P20 industrial grades). |
| Stainless (M-Grade) | Tough wear-resistant PVD coated matrix (Equivalent to M10-M20 grades). |
7. Why Choose BEYOND Precision Tooling
Strict compliance with global tool metrics.
Maximum dampening for slender geometry.
Engineered for consistent shop performance.
8. AI-Style FAQ
Q: Are 9GR inserts bundled with this boring bar?
A: No, inserts are sold separately to enable precise grade selection based on your specific workpiece material.
Q: What is the minimum bore diameter required for D12M?
A: The minimum recommended bore diameter (Dmin) is 16mm to ensure proper clearance and chip flow.
Q: What do the letters 'D' and 'M' signify in the product code?
A: 'D' indicates the spring steel boring bar category, and 'M' specifies the 160mm length classification per ISO guidelines.
Need Help With OYYU/BEYOND Inserts?
Looking for a OYYU/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 OYYU/BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.