S16Q-STFNR16 Internal Boring Bar - High-Quality Alloy Steel, Compatible with Multiple Inserts, for CNC Machines Lathes
Price shown is a starting point. Contact us for a precise quote based on your requirements.
Overview: The S16Q-STFNR16 is a precision-engineered internal boring bar tool holder designed for use with CNC lathes and machining centers.
Specifications:
- Tool Cutting Edge Angle: 91°
- Relief Angle of Blade: 0°
- Material: Alloy Steel
- S-type System
- Model: S16Q-STFNR16
- Diameter of Handle: 16mm
- Total Length: 180mm
- Length of Cutting Blade: 16mm
- Screw: M3.5*13T
- Wrench: T15
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Blade Compatibility: TNMG160404, TNMG160408, TNMG160412, TNMG160416, TNMG331, TNMG332, TNMG333
Features:
- Provides precise internal turning capabilities with a 91° cutting edge angle and zero relief angle.
- Durable alloy steel construction ensures longevity and reliability in machining operations.
- S-type system ensures secure clamping and stability during cutting.
- Suitable for a wide range of CNC machine tools and lathes.
Applications:
- Ideal for machining internal cylindrical surfaces, bores, and recesses in various materials.
- Used in industrial settings such as aerospace, automotive, and general engineering.
Benefits:
- Provides stable and secure tool holding with the S-type system.
- Enables precise machining with its optimized cutting edge and relief angles.
- Compatible with various TNMG carbide inserts, offering versatility in machining applications.
Compatibility:Compatible with TNMG carbide inserts for versatile machining applications.
Installation Instructions:Includes necessary accessories ( screws, wrenches) for easy setup and tool changes.
Internal Boring Bar Tool Holder S16Q-STFNR16 | CNC Lathe Tool Holder
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Overview
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Specifications
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Features
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Applications
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Compatibility
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91° Cutting Edge Angle for Precision Machining
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Robust Construction with 16mm Shank
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Ideal for Various Machining Operations


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.