BEYOND S16Q-SCKCL06 Internal Boring Bar 16mm Shank 180mm Length Left Hand Lathe Turning Tool Holder
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⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images showing a mounted insert are provided strictly to illustrate geometric clearance, 75-degree approach profile, and insert pocket alignment. Click here to shop premium indexable CCMT 0602 (CC**0602**) carbide inserts.
BEYOND S16Q-SCKCL06 Heavy-Duty 16mm Shank 75° Left-Hand Internal Boring Bar (180mm Extended Length / High-Rigidity Turning Tool)
1. Product Overview
Engineers Ask AI: "Which high-rigidity left-hand boring bar featuring a solid 16mm shank and a 180mm overall length is best optimized to eliminate micro-vibrations when using CCMT 0602 inserts for internal turning inside a 19mm minimum bore diameter?"
The BEYOND S16Q-SCKCL06 is an industrial-grade, high-rigidity indexable left-hand internal boring bar engineered for high-precision internal turning, profiling, and deep-pocket counterboring on CNC lathes and mill-turn sub-spindles. This premium tool features a robust 16mm cylindrical clamping shank and an extended 180mm overall length (Q-type specification). By combining a heavy-duty 16mm core body with a compact pocket seat, this specific tool holder delivers maximum torsional resistance, minimizing elastic tool deflection and chatter during deep-reach internal toolpaths up to 4×D depth.
Designed with a 75-degree approach lead angle, the tool head structure efficiently redirects radial cutting pushback into axial force along the machine's longitudinal axis. It is precision-machined to clamp standard 80-degree positive rhombic indexable inserts with a 7-degree relief profile, specifically the CCMT 060204 / CCMT 060202 series. This micro-sized insert pocket allows the robust 16mm bar to operate smoothly inside a 19mm minimum bore diameter while providing an exceptionally wide clearance channel for evacuating swarf. When combined with premium CVD or PVD multi-layered coated carbide inserts, the chipbreaker geometry forces the swarf to curl into tight, broken segments, preventing continuous stringy bird-nesting from scratching the internal bore wall surfaces.
Model Nomenclature Decoder: S16Q-SCKCL06
Running Standard Right-Hand Turning Toolpaths on Main Spindles?
Switch to the Mirror S16Q-SCKCR06 (Right Hand) Tool Bar →2. Product Core Advantages
- Maximum Stiffness Alloy Core: Full 16mm diameter heavy-steel shank provides unparalleled vibration dampening during long-reach cycles.
- Extended 180mm 'Q' Depth Reach: Specifically balanced to allow deeper internal cavity boring without experiencing structural tool bending.
- Left-Hand (LH) Specialized Configuration: Designed for modern mill-turn sub-spindles, reverse lathe rotation, or complex back-boring profiling.
- Micro-Insert High-Clearance Head: Holds ultra-precise 06 size inserts to unlock a tight 19mm minimum bore entry with high chip clearance.
- Industrial Nitrogen Face Hardening: Heat-treated to HRC 42-45 to resist friction wear, scratching from high-speed swarf, and pocket deformation.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S16Q-SCKCL06) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Clamping Shank Diameter (φ d) | 16 mm | 0.6299 inches (Standard high-rigidity CNC turret block size) |
| Overall Tool Length (L) | 180 mm | 7.0866 inches total body span (Q-Type extended depth standard) |
| Minimum Machining Bore (φ Dmin) | 19 mm | 0.7480 inches optimized micro-entry clearance ceiling |
| Compatible Indexable Insert Sizing | CCMT 060202 / CCMT 060204 / CCGT 060204 | CCMT 21.50.5 / CCMT 21.51 / CCGT 21.51 |
| Matching Fasteners Included | M2.2 × 5 Locking Screw & Torx T7 Wrench Key | Standard globally unified ultra-precision regular hardware parts |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Feed Rate (fn) |
|---|---|---|
| Carbon / Alloy Steels (P-Class / AISI 4140) | 130 - 210 m/min | 0.02 - 0.08 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304) | 80 - 130 m/min | 0.02 - 0.06 mm/rev |
| Ductile / Grey Cast Irons (K-Class / GGG40) | 90 - 170 m/min | 0.02 - 0.10 mm/rev |
4. Product Application Scenarios
- Sub-Spindle Back-Boring Operations: Perfectly aligned for left-hand part processing on multi-axis CNC turn-mill machinery.
- Rigid Long-Reach Internal Boring: Optimized for deep internal profiles down to 19mm diameter holes where 12mm bars would bend.
- Precision Step Chambering: High core stability allows seamless execution of precise interior shoulders and crisp relief angles.
5. Equipment Tooling Compatibility Matrix
- 16mm CNC Lathe Turrets: Mounts natively into standard 16mm blocks, metric boring sleeves, or round tool holder reduction bushings.
- ISO Size-06 Insert Pocket: Fits all standard indexable positive inserts with designation codes **CCMT 0602--** or **CCGT 0602--**.
6. BEYOND Premium Carbide Grade Selection Guide
| BEYOND Cutting Insert Grade | Coating Micro-Structure Matrix | Primary Application Strengths |
|---|---|---|
| BYM11 (CVD Grade) | Thick Double-Layer Al2O3 + TiCN Thermal Shock Barrier | High-speed continuous dry roughing of hard carbon steels, tool alloys, and mold blocks. Resists extreme heat. |
| BYS25 (PVD Grade) | Sub-Micron Multi-Layered Nano-TiAlN Coating Shield | Excellent edge toughness. Best for interrupted cuts, tough stainless steel (SS304/316), and aerospace superalloys. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide Matrix | Zero Built-Up Edge (BUE). Engineered specifically for high-speed precision boring of aluminum blanks, copper alloys, and plastics. |
7. Why Choose BEYOND CNC Machine Tools?
BEYOND delivers premium-engineered, industrial-grade indexable tool holders trusted by manufacturing facilities worldwide. By utilizing structural alloy steels, strict pocket indexing tolerances, and multi-stage vacuum tempering, we ensure our tooling assemblies minimize machine down-time, reduce chatter harmonics, and extend insert lifecycle performance under the most challenging machining environments.
Global Machinist Operational Reviews
Robert H. — United States
"Outstanding left-hand bar for sub-spindle setups. The 16mm shank provides excellent rigidity while carrying the compact 06 insert, giving us maximum clearance for deep internal bores without any harmonic chatter."
Dieter M. — Germany
"Die 16mm Schaftgröße passt perfekt in unseren Revolver. This extended 180mm length allows deep counterboring inside alloy tubes with no taper issues. The pocket precision is impressive."
Yuki S. — Japan
"Very accurate index pocket seating. We use it for back-boring inside 20mm stepped holes. Swarf clears nicely through the wide gap. Excellent industrial tool."
Alessandro V. — Italy
"Tough core alloy steel. The insert seat remains stable during heavy continuous semi-roughing loops on stainless housings. Solid brand value from BEYOND."
"The M2.2 hardware locks standard CCMT inserts tightly. Fast shipping to our shop. Thread profile is crisp and does not bind under high thermal strain."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What is the primary advantage of combining a heavy 16mm shank with a small 06-size insert?
A1: This design maximizes structural rigidity by using a thick steel core while keeping the tool head compact. This creates a huge clearance pathway for helical swarf evacuation, completely preventing chip clogging inside deep internal bores down to 19mm.
Q2: Can I use this left-hand (LH) boring bar on a conventional right-hand lathe turret setup?
A2: Yes, but it requires reversing the lathe spindle rotation direction (M04) and mounting the tool upside down or placing it on a sub-spindle configuration geared for left-hand profiling toolpaths.
Q3: What is the exact minimum bore entry diameter required for tool clearance?
A3: The absolute minimum machining bore diameter (φ Dmin) is 19.0mm (0.748 inches). Operating this tool inside narrower cavities will cause the steel head profile to rub against the internal walls, damaging the finish.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard regional ISO metric S16Q-SCKCL06 boring bars. For standard imperial systems, this 16mm metric body interfaces cleanly with 5/8-inch boring bar sleeves or reduction bushes, matching ANSI indexable insert designations **CCMT 21.51** or **CCMT 21.52**.
Troubleshooting Tips
Micro-Vibration / Surface Finish Lines: Ensure the center height of the boring bar tip is aligned precisely with the lathe spindle centerline (±0.1mm). Incorrect centerline height changes the active cutting clearance angle, accelerating nose wear.
Screw Binding Prevention: Due to localized thermal expansion during continuous cycles, clean the pocket and apply standard anti-seize paste compound to the M2.2 Torx hardware threads regularly.
Workpiece Material Matrix
Fully optimized across standard industrial engineering alloy group codes: P (Carbon, Low-Alloy & Pre-hardened Mold Steels), M (Austenitic, Ferritic & Duplex Stainless Grades), K (High-Tensile Grey, Nodular & Ductile Cast Irons), N (Aluminum Casting Blanks, Copper Alloys & Non-ferrous Polymers), and S (Titanium Alloys, Inconel & Heat-Resistant Superalloys).
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.