BEYOND H1612K-SCLCR06-36 Tapered High-Speed Steel Internal Boring Bar | CNC Lathe Tool Holder for CCMT060204 Inserts (Insert Not Included)
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BEYOND H1612K-SCLCR06-36 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 CCMT060204 indexable carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND H1612K-SCLCR06-36 is a high-performance tapered high-speed steel (HSS) internal boring bar featuring a stepped 16mm-to-12mm reduced neck profile and 125mm overall length (K length code), specifically engineered for deep-cavity internal clearance and anti-interference turning. Configured to accommodate CCMT060204 indexable rhombic 80° positive inserts with specialized chipbreaker geometry, this boring bar delivers superior vibration damping and dimensional precision across ISO P, M, and K workpiece classifications.
1. Product Overview
"Which tapered high-speed steel internal boring bar and rhombic 80° positive insert combination guarantees maximum clearance, vibration suppression, and surface finish integrity during deep bore profiling using CCMT060204 inserts?"
The BEYOND H1612K-SCLCR06-36 tapered high-speed steel internal boring bar (frequently searched as stepped HSS boring shank, CNC reduced neck internal turning tool holder, and CCMT deep-cavity anti-chatter bar) is meticulously designed with a robust 16mm mounting shank stepping down to a 12mm reduced head neck across a 125mm overall length (K series). This specialized taper profile prevents tool rub against restricted bore walls while absorbing harmonic cutting loads. The secure screw-down pocket is precision-machined for CCMT060204 indexable 80° rhombic positive inserts (featuring a 0.4mm corner radius '04' and right-hand 95° lead geometry 'SCLCR'), utilizing positive rake angles to reduce cutting forces and evacuate chips smoothly during deep-hole boring.
ISO Model Designation Breakdown
Need alternative SCLCR boring bar sizes or configurations?
2. Product Core Advantages
- Stepped Tapered Shank (16mm to 12mm): Combines a rigid 16mm base clamping diameter with a reduced 12mm neck profile to optimize deep-bore clearance and eliminate wall interference.
- High-Speed Steel Damping Properties: Advanced metallurgical HSS structure absorbs harmonic resonance and cutting chatter during long-overhang profiling.
- Rigid Screw-Down Clamping: Holds CCMT060204 positive inserts securely in place, preventing micro-displacement under continuous feed loads.
- Optimized 95° Lead Angle (SCLCR): Facilitates versatile internal boring, facing, and profiling operations with exceptional edge strength.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Imperial Specification | Metric Equivalent |
|---|---|---|
| Shank Geometry | Approx. 5/8" to 15/32" Stepped Taper | 16mm to 12mm Reduced Neck (H1612) |
| Overall Length | Approx. 4.92" Overall Length (K Series) | 125mm Length Designation |
| Compatible Insert Series | CCMT 80° Rhombic Positive Inserts | CCMT060204 (0.4mm Radius) |
| Lead Angle & Rake | 95-Degree Lead Angle (Positive Rake) | SCLCR Right-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) | 60 - 150 m/min | fn: 0.05 - 0.15 mm/rev | ap: 0.2 - 1.5 mm |
| ISO M (Stainless Steel) | 40 - 100 m/min | fn: 0.04 - 0.12 mm/rev | ap: 0.15 - 1.2 mm |
| ISO K (Cast Iron) | 50 - 130 m/min | fn: 0.06 - 0.18 mm/rev | ap: 0.2 - 1.8 mm |
4. Product Applications
- Deep Bore Internal Turning: Machining long internal cavities where standard straight-shank bars suffer from wall rubbing.
- Restricted Clearance Profiling: Utilizing the tapered neck design to reach deep recesses and complex internal step features.
- Precision Internal Finishing: Delivering high surface finish quality across steel, stainless steel, and cast iron components.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard CCMT060204 indexable 80° rhombic positive inserts.
Tool Holding: Features a 16mm 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 internal turning cycles without loosening.
6. Material Comparison: Tapered High-Speed Steel (HSS) vs. Standard Carbide Boring Bars
Clearance & Reach: Tapered HSS shanks allow reduced neck geometry for deep internal clearance without the extreme brittleness associated with solid carbide at similar dimensions.
Shock Absorption: Superior damping capacity against sudden shock loads, protecting insert edges from chipping during interrupted internal cuts.
Cost-Effective Versatility: Outstanding economic value for general-to-deep internal turning 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-bore applications.
8. Frequently Asked Questions
Q: Does the BEYOND H1612K-SCLCR06-36 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 advantage of the 16mm-to-12mm tapered neck design?
A: The stepped taper maintains strong 16mm base clamping stability while providing a reduced 12mm clearance profile to prevent wall rubbing inside deep bores.
Q: Which insert series fits this specific tool holder?
A: This holder is precision-engineered for standard CCMT060204 80° rhombic positive inserts.
Grade Comparison: PVD coated carbide grades offer exceptional toughness for stainless steel internal turning; CVD coated grades excel in high-speed alloy steel machining.
Equivalent Models: Fully interchangeable with ISO / ANSI standardized tapered internal boring systems and tool posts.
Troubleshooting: Vibration or chatter in deep 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 P (steels), ISO M (stainless steels), and ISO K (cast irons).
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.