S25S-MTQNR16 Internal Boring Bar Holder 25mm CNC Lathe Tool boring bar holder lathe
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S20R-MTQNR16 CNC Internal Boring Bar Tool Holder
Specifications, 5-Point Description, Applications
Material, Included Accessories, Compatibility
Overview:
The S25S-MTQNR16 Internal Boring Bar Holder is designed for precise internal turning operations on CNC lathes. It features a sturdy 25mm alloy steel handle and a 16mm cutting blade length, ensuring durability and accuracy in machining processes. This tool holder is equipped with a multi-lock system (M-type). Compatible with a range of TNMG carbide inserts.
Specifications:
- Tool Holder Type: Internal Boring Bar
- Material: Alloy Steel
- Handle Diameter: 25mm
- Total Length: 250mm
- Cutting Blade Length: 16mm
- Tool Cutting Edge Angle: 105°
- Relief Angle of Blade: 0°
- Locking System: Multi-lock (M-type)
- Includes: CTM511 Pin, HL1810 Clamp, ML0620 Screws, Wrenches L2.0 L3.0
- Compatible Inserts: TNMG160402, TNMG160404, TNMG160408, TNMG160412, TNMG160416, TNMG331, TNMG332, TNMG333
5-Point Description:
- Precision Machining: Engineered for precise internal turning operations with a 105° cutting edge angle for efficient material removal.
- Durability: Constructed from high-quality alloy steel, ensuring durability and reliability in CNC machine tools and lathes.
- Stability: Features an M-type multi-lock system that enhances stability and reduces vibration during machining.
- Versatility: Ideal for a variety of applications including facing, profiling, and chamfering in CNC machining environments.
- Complete Set: Comes with essential accessories including pins, clamps, screws, and wrenches, facilitating immediate setup and use.
Benefits:
- Ensures precise and stable machining operations.
- Durable alloy steel construction for longevity.
- Multi-lock system enhances tool security and positioning.
- Versatile compatibility with a wide range of carbide inserts.
- Ideal for CNC machine tools and lathes.
Applications:
- CNC machine tools
- CNC lathes
- Boring bar setups
- Internal turning operations
Buyer's Guide:
- Ensure compatibility with your CNC machine's specifications.
- Select appropriate carbide inserts based on material and cutting requirements.
- Regularly check and maintain tool holder and inserts for optimal performance.
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.