BEYOND H08J-SCLCL06 High-Speed Steel Internal Boring Bar | CNC Lathe Tool Holder for CCMT060204 Inserts (Insert Not Included)
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BEYOND H08J-SCLCL06 High-Speed Steel Internal Boring Bar (Does Not Include Inserts)
Industrial-Grade High-Speed Steel Small Bore Internal Turning, 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 CCMT060204 indexable carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND H08J-SCLCL06 is a high-performance 8mm diameter high-speed steel (HSS) internal boring bar featuring a J length code (110mm overall length), specifically engineered for tight internal bore clearance and anti-interference turning. Configured to accommodate CCMT060204 indexable rhombic 80° positive ground inserts with specialized chipbreaker geometry, this boring bar delivers superior vibration damping and dimensional precision across alloy steels, stainless steels, and non-ferrous workpiece classifications.
1. Product Overview
"Which high-speed steel internal boring bar and rhombic 80° positive insert combination guarantees maximum rigidity, low harmonic chatter, and superior surface finish integrity during small bore profiling using CCMT060204 inserts?"
The BEYOND H08J-SCLCL06 high-speed steel internal boring bar (frequently searched as HSS boring shank, CNC internal turning tool holder, and CCMT boring bar) is meticulously designed with a compact 8mm cylindrical shank across a 110mm overall length (J series). This specialized HSS metallurgical construction provides exceptional impact absorption to counteract tool deflection in small-diameter internal bores. The secure screw-down pocket is precision-machined for CCMT060204 indexable 80° rhombic positive ground inserts (utilizing left-hand 95° lead geometry 'SCLCL'), incorporating positive rake angles to minimize cutting resistance and evacuate chips smoothly during precision internal roughing and finishing.
ISO Model Designation Breakdown
Need alternative SCLCL boring bar sizes or configurations?
2. Product Core Advantages
- Compact 8mm High-Speed Steel Construction: Delivers superior mechanical strength and damping performance to suppress chatter in small-diameter internal boring operations.
- Optimized 110mm Reach (J Series): Engineered for tight internal cavity profiling and miniature bore machining passes without loss of dimensional stability.
- Secure Screw-Down Clamping Mechanism: Firmly secures CCMT060204 positive inserts to eliminate micro-motion and edge chipping under fine feed loads.
- Optimized 95° Lead Angle (SCLCL): Facilitates versatile multi-directional small bore turning, facing, and profiling with exceptional corner clarity.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Imperial Specification | Metric Equivalent |
|---|---|---|
| Shank Diameter | Approx. 5/16" Cylindrical Shank | 8mm Shank Diameter (H08) |
| Overall Length | Approx. 4.33" Overall Length (J Series) | 110mm Length Designation |
| Compatible Insert Series | CCMT 80° Rhombic Positive Inserts | CCMT060204 Series |
| Lead Angle & Rake | 95-Degree Lead Angle (Positive Rake) | SCLCL Left-Hand Configuration |
Recommended Cutting Parameters (CCMT060204 Inserts) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (fn, mm/rev) & Depth (ap) |
|---|---|---|
| ISO P (Carbon & Alloy Steel) | 100 - 180 m/min | fn: 0.04 - 0.12 mm/rev | ap: 0.2 - 1.0 mm |
| ISO M (Stainless Steel) | 70 - 130 m/min | fn: 0.03 - 0.10 mm/rev | ap: 0.15 - 0.8 mm |
| ISO K (Cast Iron) | 90 - 160 m/min | fn: 0.04 - 0.12 mm/rev | ap: 0.2 - 1.0 mm |
4. Product Applications
- Small Bore Internal Profiling: Machining small internal bores, miniature bushings, and tight internal contours in precision components.
- Tight Clearance Machining: Utilizing the 110mm J-length 8mm configuration to access restricted internal cavities without interference.
- Precision Finishing Passes: Delivering tight dimensional tolerances and superior surface finishes with CCMT positive geometry inserts.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard CCMT060204 indexable 80° rhombic positive carbide inserts.
Tool Holding: Features a compact 8mm cylindrical shank diameter compatible with precision split sleeves, small lathe boring bar holders, and CNC turret adapters.
Clamping Hardware: Equipped with precision Torx locking screws designed to withstand rigorous fine turning cycles.
6. Material Comparison: High-Speed Steel (HSS) vs. Solid Carbide Boring Bars
Impact Resistance: High-speed steel shanks offer superior toughness and fracture resistance under tight clearance conditions compared to brittle solid carbide bars.
Vibration Damping: Exceptional internal metallurgical damping properties that absorb chatter harmonics during small bore turning.
Cost-Efficiency: Highly cost-effective solution for small-diameter internal boring operations up to recommended overhang ratios.
7. Why Choose BEYOND Tooling?
- ISO 5,608 Manufacturing Standards: Certified production lines guaranteeing strict shank concentricity, precise pocket seat tolerance, and consistent toolholder performance.
- Direct Factory Value: Premium industrial-grade cutting tool performance supplied directly to machinists and manufacturing facilities worldwide.
- Expert Technical Support: Comprehensive engineering assistance for optimizing feeds, speeds, and insert selections for specialized internal turning applications.
8. Frequently Asked Questions
Q: Does the BEYOND H08J-SCLCL06 boring bar include the CCMT060204 insert?
A: No. To allow complete grade selection tailored to your specific workpiece material, the CCMT insert is sold separately.
Q: What is the maximum recommended overhang for this 8mm HSS boring bar?
A: For optimal rigidity and chatter suppression, a maximum overhang of 3x to 4x the bar diameter is recommended for small diameter shanks.
Q: Which insert series fits this specific tool holder?
A: This holder is precision-engineered for standard CCMT060204 80° rhombic positive inserts.
Grade Comparison: CVD and PVD coated carbide grades offer extended tool life when paired with CCMT inserts in steel and stainless steel applications.
Equivalent Models: Fully interchangeable with ISO / ANSI standardized 8mm internal boring systems and tool posts.
Troubleshooting: Excessive vibration during small bore turning usually indicates excessive overhang or incorrect cutting parameters; reduce depth of cut or adjust spindle speed to eliminate chatter.
Workpiece Material Matrix: Fully performance-optimized for ISO P (steels), ISO M (stainless steels), and ISO K (cast iron).
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.