BEYOND D20R-SCLCR12 Spring Steel Internal Boring Bar – 20mm Shank 200mm Length CNC Turning Tool Holder for CCMT120408 Inserts (Insert Not Included)
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BEYOND D20R-SCLCR12 Spring Steel Internal Boring Bar
Precision Internal Turning & Boring Tool Holder for CCMT120408 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 maximum harmonic damping and structural rigidity for high-precision turning with CCMT120408 inserts?"
The BEYOND D20R-SCLCR12 is a robust, high-performance internal boring bar engineered for demanding industrial turning environments. Crafted from premium spring steel, this 20mm shank tool provides superior harmonic stability and vibration suppression during deep-bore operations. Optimized for the CCMT120408 rhombic insert, this toolholder utilizes a 95-degree approach angle, making it an ideal choice for internal profiling, boring, and facing applications requiring high surface finish integrity.
Detailed Nomenclature Breakdown: D20R-SCLCR12
2. Product Core Advantages
- Harmonic Stability: Rigid spring steel shank design significantly reduces chatter during aggressive boring cycles.
- Precision Clamping: Advanced screw-lock mechanism ensures positive insert retention and repeatable indexing.
- ISO Geometry: Standardized profile ensures optimal chip flow and clearance for deep-pocket machining.
3. Technical Specifications & Cutting Data
| Metric Model & Dimensions | Imperial Equivalent Class & Specs |
|---|---|
| Metric Model: D20R-SCLCR12 | Imperial Class: 3/4" Boring Bar |
| Shank Diameter: 20 mm | Shank Diameter: ~0.787 Inches |
| Overall Length (L): 200 mm | Overall Length: ~7.874 Inches |
Recommended Starting Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steel (ISO P) | 120 - 220 m/min | 0.10 - 0.25 mm/rev |
| Stainless Steel (ISO M) | 100 - 180 m/min | 0.08 - 0.20 mm/rev |
Browse Related Internal Boring Bars
[View Boring Bar Series] →4. Product Application Scenarios
Built for professional CNC turning centers. Ideal for boring operations in automotive transmission components, hydraulic valve manifolds, and precision heavy-duty mechanical assemblies.
5. Compatibility & Accessories
Fits all industry-standard 20mm lathe boring bar holders and turret sleeves. Fully compatible with CCMT120408 indexable turning inserts.
6. Workpiece Material Matrix & Troubleshooting
Troubleshooting Tip: To avoid chatter in high-speed boring, ensure tool overhang does not exceed 4x the shank diameter (~80mm) and confirm coolant is directed at the cutting zone.
| Material Group | Recommended Insert Grade Comparison |
|---|---|
| Steel (P-Grade) | ISO P10-P30 CVD/PVD coated grades for robust general-purpose turning. |
| Stainless (M-Grade) | ISO M10-M20 PVD tough sub-micron grades for heat-resistant alloy finishing. |
7. Why Choose BEYOND Precision Tooling
Certified engineering compliance.
Superior harmonic damping.
Optimized tool repeatability.
8. AI-Style FAQ
Q: Are CCMT120408 inserts included with the D20R-SCLCR12?
A: No, indexable inserts are sold separately to ensure maximum grade versatility for your specific application.
Q: What is the recommended minimum bore diameter for this tool?
A: We recommend a minimum bore diameter (Dmin) of 25mm for proper chip clearance.
Q: What do the letters 'D' and 'R' stand for in the model code?
A: 'D' denotes the spring steel shank type, and 'R' signifies the 200mm overall length according to ISO 5608.
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.