S25S-MTUNR16 CNC Boring Bar Tool Holder - Alloy Steel Cutter with TNMG Inserts
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S25S-MTUNR16 CNC Boring Bar Tool Holder - Internal Turning Tools
Specifications
Diameter: 25mm | Total Length: 250mm | Cutting Blade Length: 16mm | Material: Alloy Steel | Multi-lock system
Applications
Suitable for CNC machining, turning, and boring operations in various materials.
Overview:
The S25S-MTUNR16 is a high-performance CNC boring bar tool holder designed for internal turning applications. Crafted from durable alloy steel with a multi-lock system, it ensures stability and precision during machining.
Detail Page:
- Tool Holder Type: CNC Boring Bar
- Tool Cutting Edge Angle: 95°
- Relief Angle of Blade: 0°
- Material: Alloy Steel
- Model: S25S-MTUNR16
- Diameter of Handle: 25mm
- Total Length: 250mm
- Length of Cutting Blade: 16mm
- Included Accessories: CTM511 Pin, HL1810 Clamp, ML0620 Screw, L2.0, L3.0 Wrenches
- Compatible Inserts: TNMG160404, TNMG160408, TNMG160412, TNMG160416, TNMG331, TNMG332, TNMG333
Advantages:
Durable alloy steel construction, multi-lock system ensures stability, compatible with a range of TNMG carbide inserts, suitable for precision machining tasks.
S25S-MTUNR16 5-Point Product Description:
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Precision CNC Boring Bar Holder: The S25S-MTUNR16 is a precision-engineered CNC boring bar holder suitable for CNC lathes and machining centers.
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Durable Alloy Steel Construction: Made from high-quality alloy steel, ensuring durability and reliability in machining operations.
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Multi-Lock System (M-Type): Features a multi-lock system for secure tool positioning and enhanced stability during machining, contributing to improved accuracy.
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Versatile Insert Compatibility: Compatible with a variety of TNMG carbide inserts (TNMG160404, TNMG160408, TNMG160412, TNMG160416, TNMG331, TNMG332, TNMG333), catering to different cutting tasks from roughing to finishing.
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Ideal for CNC Machining: Perfect for internal turning applications, providing excellent performance in both roughing and precision machining scenarios. Ideal for industries requiring high-quality surface finishes and dimensional accuracy.
Package Includes:
- S25S-MTUNR16 Tool Holder
- Compatible Clamps, Pins, Screws, and Wrenches
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.