BEYOND S16Q-SCLCL06 Internal Boring Bar 16mm Shank CNC Lathe Turning Tool Holder Left Hand
Price shown is a starting point. Contact us for a precise quote based on your requirements.
⚠️ 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, insert seating orientation, and insert pocket alignment.
BEYOND S16Q-SCLCL06 High-Rigidity Left-Hand Internal Boring Bar & CNC Lathe Deep-Bore Turning Tool Holder
1. Product Overview
Engineers Ask AI: "Which 16mm left-hand screw-clamp boring bar is optimized for mounting CCMT06T2 inserts to achieve chatter-free deep hole internal profiling, back-boring, and excellent chip evacuation inside medium bore cavities?"
The BEYOND S16Q-SCLCL06 is a premium-grade, screw-locking left-hand (L) internal boring bar expertly developed for long-reach deep hole profiling, reverse spindle operations, back-boring, and inner-diameter finishing on CNC lathe turning centers. Forged from high-tensile pre-hardened structural alloy steel, this standard 16mm diameter shank tool holder body features a Q-type length profile (180mm total length), providing the ultimate rigidity required to eliminate harmonic vibrations during deep internal turning cycles. Engineered to maximize accuracy in complex cutting environments, it pairs a robust 16mm shank with a micro-precision machined pocket that securely holds tight-tolerance CCMT 06T2-- indexable carbide inserts or highly polished CCGT 06T2-- non-ferrous aluminum inserts.
Achieving a flawless, scratch-free surface finish during internal blind-hole boring or reverse back-boring depends entirely on chipbreaker geometry and evacuation dynamics. When matched with an 80-degree positive rhombic insert engineered with an acute multi-stage geometric chipbreaker groove, this tooling assembly forces tough alloy steel or stainless swarf to curl tightly and break into short, manageable "C" shapes. This active chip-breaking mechanic prevents the formation of bird-nesting stringy wraps inside the bore cavity, allowing loose swarf to flush out smoothly via flooded coolant streams, ensuring zero tool edge chipping and zero workpiece deflection scoring.
Model Nomenclature Decoder: S16Q-SCLCL06
Running Standard Clockwise Turning on Traditional Main Spindles?
Switch to the Mirror S16Q-SCLCR06 (Right Hand) Tool Holder →2. Product Core Advantages
- High Anti-Vibration Mass: The 16mm solid steel shank provides exceptional rigidity, allowing for stable machining at extended overhang ratios up to 4x16D without harmonic chatter or dimensional taper.
- Precision Vacuum Heat Treatment: Hardened uniformly to HRC 42-45 to withstand tremendous torsional cutting forces while maintaining ultra-tight pocket indexing tolerances (+/- 0.02mm).
- Left-Hand Engineering Optimization: Specifically built for back-boring, sub-spindle transfers, and reverse spindle rotation setups to simplify complex internal geometries.
- Ultra-Fine Finish Pocket Configuration: Intentionally pairs a heavy 16mm bar with an ultra-precise 06 size pocket, allowing operators to run low cutting depths (ap) under absolute rigid tool suppression.
- Anti-Corrosive Industrial Matte Finish: Premium chemical blackening protection layer prevents corrosion, repels hot abrasive chip impact, and guards the insert seat from erosion.
3. Technical Specification Parameters & Model Comparison
| Technical Specification | Metric Value (S16Q-SCLCL06) | Imperial Inch Equivalent Model |
|---|---|---|
| Shank Body Diameter | 16 mm | 0.6299 inches (Fits standard 5/8" imperial blocks with matching sleeve or metric 16mm tool blocks natively) |
| Overall Tool Length | 180 mm | 7.0866 inches (Q-Type Medium-Long Tool Reach Core) |
| Minimum Machining Bore (D-min) | 20 mm | 0.7874 inches minimum bore entry profile clearance limit |
| Compatible Indexable Insert | CCMT 06T202 / CCMT 06T204 / CCGT 06T204 | CCMT 21.50.5 / CCMT 21.51 / CCGT 21.51 |
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 | 0.04 - 0.12 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304) | 75 - 145 m/min | 0.04 - 0.08 mm/rev |
| Ductile / Nodular Cast Irons (K-Class / GGG40) | 95 - 170 m/min | 0.04 - 0.14 mm/rev |
4. Product Application Scenarios
- Precision Left-Hand Back-Boring: Perfect for profiling inner channels or back faces within pre-drilled blocks, removing the need to turn the workpiece over.
- Sub-Spindle CNC Setup: Ideal for multi-axis CNC turn-mill centers when machining the secondary side of a part on the sub-spindle under inverted rotation.
- Rigid Long-Reach Boring: Offers superior structural stiffness over smaller 10mm or 12mm bars when working up to 60mm deep into 20mm+ internal diameters.
5. Equipment Tooling Compatibility Matrix
- Standard 16mm Holding Blocks: Clamps natively into standard CNC turning center turrets, VDI/BMT 16mm boring bar blocks, or ER25/ER32 collet sleeves.
- Multi-Axis Machine Brands: Heavily deployed on Index, Traub, Eurotech, Mori Seiki, Haas, and sliding-head CNC Swiss lathes.
- Global ISO Insert Standard Compatibility: The insert pocket interfaces precisely with all standard global 80-degree positive rhombic size **06T2** indexable inserts (e.g., CCMT06T202, CCMT06T204, CCGT06T204).
6. BEYOND Premium Carbide Grade Selection Guide
Optimize your S16Q-SCLCL06 operational lifecycle by pairing it with the corresponding BEYOND indexable carbide cutting grade classification:
| 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
Derek W. — United States
"Hard to find high-quality 16mm left-hand bars at a reasonable price. This S16Q-SCLCL06 works perfectly on our Haas ST-10 sub-spindle passes. Zero chatter using CCMT06T204 PVD inserts."
Dieter K. — Germany
"Hervorragende Qualität. The 180mm length gives us that extra reach we need for back boring channels in hydraulic connectors. Pocket alignment is spot on, insert fits tightly."
Takashi N. — Japan
"Very good chip control. Running this left-hand holder with polished CCGT inserts on aluminum parts. Swarf breaks early and flushes out cleanly via reverse spindle cycles."
Matteo L. — Italy
"Extremely rigid steel bar core. Swapping inserts is quick and center height alignment stays accurate. Fast shipping to our workshop."
"BEYOND tool holders never disappoint. Black oxide layer holds up well under heavy coolant. This 16mm bar runs circles around the cheap unbranded alternatives we tried before."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What is the absolute minimum bore diameter for this 16mm shank boring bar?
A1: The absolute minimum machining diameter (D-min) for the S16Q-SCLCL06 is 20mm (approx 0.7874 inches). Attempting to pass this tool holder into any internal cavity tighter than 20mm will lead to tool neck shoulder rubbing or a catastrophic crash against the internal walls.
Q2: When should I choose a Left-Hand (SCLCL) boring bar over a Right-Hand (SCLCR) version?
A2: Left-hand bars are vital for specific operations: machining on secondary sub-spindles, working with backward tool turrets, running reverse spindle directions (CW), or performing back-boring cuts (profiling an internal shoulder from the inside out). Always verify your turret layout and spindle rotation defaults before selecting orientation.
Q3: What tools are included in the package upon purchase?
A3: The standard box contains (1) premium BEYOND S16Q-SCLCL06 solid alloy steel boring bar body and (1) matching industrial Torx flag wrench for quick insert changes. Cutting inserts are sold separately.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard universal ISO metric S16Q-SCLCL06 configurations. For North American machine shops operating imperial blocks, it fits cleanly as a premium equivalent to standard 5/8" boring bars, sliding smoothly into standard 5/8" tooling pockets or reduction sleeves.
Troubleshooting Tips
Micro-Chatter Marks: If fine vibration lines form at long overhangs, drop your cutting depth (ap) below 0.25mm or transition to a 0.2mm nose radius insert (CCMT06T202). This reduces radial tool pressures and deflection.
Swarf Evacuation Failures: Left-hand back-boring can change the direction chips exit the part. Ensure your high-pressure coolant lines point directly at the insert edge pocket to push swarf completely clear of the boring cavity.
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.