BEYOND H1206L-SCLCR04-24 Tapered High-Speed Steel Internal Boring Bar | CNC Lathe Tool Holder for CCGT04 Inserts (Insert Not Included)
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BEYOND H1206L-SCLCR04-24 Tapered High-Speed Steel Internal Boring Bar (Does Not Include Inserts)
Industrial-Grade Tapered High-Speed Steel Internal Turning, Deep Bore Profiling & Fine Boring Bar for CNC Lathes
⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert are strictly for assembly demonstration. The matching CCGT04 indexable carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND H1206L-SCLCR04-24 is a high-performance tapered high-speed steel (HSS) internal boring bar featuring a stepped 12mm-to-6mm reduced neck profile and 140mm overall length (L length code), specifically engineered for deep-cavity internal clearance and anti-interference turning. Configured to accommodate CCGT04 indexable rhombic 80° positive ground inserts with specialized sharp-edge chipbreaker geometry, this boring bar delivers superior vibration damping and dimensional precision across non-ferrous and low-carbon workpiece classifications.
1. Product Overview
"Which tapered high-speed steel internal boring bar and sharp rhombic 80° positive insert combination guarantees maximum clearance, low cutting forces, and mirror-finish integrity during deep micro-bore profiling using CCGT04 inserts?"
The BEYOND H1206L-SCLCR04-24 tapered high-speed steel internal boring bar (frequently searched as stepped HSS boring shank, CNC reduced neck internal turning tool holder, and CCGT micro-bore anti-chatter bar) is meticulously designed with a robust 12mm mounting shank stepping down to an ultra-slim 6mm reduced head neck across a 140mm overall length (L series). This specialized taper profile prevents tool rub against restricted micro-bore walls while absorbing harmonic cutting loads. The secure screw-down pocket is precision-machined for CCGT04 indexable 80° rhombic positive ground inserts (utilizing right-hand 95° lead geometry 'SCLCR'), incorporating sharp ground cutting edges and positive rake angles to minimize cutting resistance and evacuate fine chips smoothly during deep-hole finishing.
ISO Model Designation Breakdown
Need alternative SCLCR boring bar sizes or configurations?
2. Product Core Advantages
- Stepped Tapered Shank (12mm to 6mm): Combines a robust 12mm base clamping diameter with an ultra-slim 6mm neck profile to negotiate extremely narrow micro-bores over extended reaches.
- High-Speed Steel Damping Properties: Advanced metallurgical HSS structure absorbs harmonic resonance and cutting chatter during long-overhang micro-profiling.
- Rigid Screw-Down Clamping: Holds CCGT04 positive ground inserts securely in place, preventing micro-displacement under delicate fine-feed loads.
- Optimized 95° Lead Angle (SCLCR): Facilitates versatile internal boring, facing, and fine-finishing operations with exceptional edge clarity.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Imperial Specification | Metric Equivalent |
|---|---|---|
| Shank Geometry | Approx. 1/2" to 1/4" Stepped Taper | 12mm to 6mm Reduced Neck (H1206) |
| Overall Length | Approx. 5.51" Overall Length (L Series) | 140mm Length Designation |
| Compatible Insert Series | CCGT 80° Rhombic Positive Ground Inserts | CCGT04 Micro Series |
| Lead Angle & Rake | 95-Degree Lead Angle (Positive Rake) | SCLCR Right-Hand Configuration |
Recommended Cutting Parameters (CCGT04 Inserts) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO N (Aluminum & Non-Ferrous) | 100 - 300 m/min | fn: 0.03 - 0.12 mm/rev | ap: 0.1 - 1.2 mm |
| ISO P (Low Carbon / Free-Machining Steel) | 60 - 140 m/min | fn: 0.02 - 0.08 mm/rev | ap: 0.05 - 0.8 mm |
| ISO M (Austenitic Stainless Steel) | 40 - 90 m/min | fn: 0.02 - 0.06 mm/rev | ap: 0.05 - 0.6 mm |
4. Product Applications
- Deep Micro-Bore Fine Finishing: Machining ultra-narrow internal diameters and deep miniature cavities with minimal cutting pressure in non-ferrous and alloy components.
- Restricted Clearance Profiling: Utilizing the ultra-slim 6mm neck design over an extended 140mm reach to access deep recesses safely.
- Mirror Surface Contour Turning: Delivering exceptional surface finishes utilizing sharp ground CCGT geometries.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard CCGT04 indexable 80° rhombic positive ground micro-inserts.
Tool Holding: Features a 12mm cylindrical base clamping diameter compatible with standard lathe split bushings and boring bar holders.
Clamping Hardware: Equipped with precision Torx locking screws designed to withstand continuous micro-turning cycles without loosening.
6. Material Comparison: Tapered High-Speed Steel (HSS) vs. Standard Carbide Boring Bars
Clearance & Reach: Tapered HSS shanks allow reduced 6mm neck geometry over extended reaches without the extreme brittleness associated with solid carbide at identical small dimensions.
Shock Absorption: Superior damping capacity against sudden shock loads, protecting delicate ground micro-insert edges from chipping during interrupted internal cuts.
Cost-Effective Versatility: Outstanding economic value for miniature internal finishing operations where flexibility and rigidity intersect.
7. Why Choose BEYOND Tooling?
- ISO 5,608 Manufacturing Standards: Certified production lines guaranteeing strict concentricity, precise neck taper angles, and consistent toolholder tolerances.
- Direct Factory Value: Premium industrial-grade cutting tool performance supplied directly to machinists and workshops worldwide.
- Expert Technical Support: Comprehensive engineering assistance for optimizing feeds, speeds, and insert selections for specialized deep micro-bore applications.
8. Frequently Asked Questions
Q: Does the BEYOND H1206L-SCLCR04-24 boring bar include the CCGT04 insert?
A: No. To allow complete grade selection tailored to your specific workpiece material, the CCGT insert is sold separately.
Q: What is the advantage of the 12mm-to-6mm tapered neck design?
A: The stepped taper maintains strong 12mm base clamping stability while providing an ultra-slim 6mm clearance profile over an extended 140mm reach to prevent wall rubbing inside tight micro-bores.
Q: Which insert series fits this specific tool holder?
A: This holder is precision-engineered for standard CCGT04 80° rhombic positive ground micro-inserts.
Grade Comparison: Uncoated or specialized diamond-like carbon (DLC) coated grades offer superior performance with CCGT inserts in non-ferrous aluminum and plastics.
Equivalent Models: Fully interchangeable with ISO / ANSI standardized tapered internal boring systems and tool posts.
Troubleshooting: Vibration or chatter in deep micro-bores typically stems from excessive tool overhang or incorrect feed rates; ensure proper bushing clamping and reduce depth of cut if necessary.
Workpiece Material Matrix: Fully performance-optimized for ISO N (aluminum/non-ferrous), ISO P (steels), and ISO M (stainless steels).
Authoritative Endorsement: Dimensional parameters and structural tolerances strictly benchmarked against ISO 5,608 Tool Holder Standards and certified high-speed steel metallurgy specifications.
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
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.