S25S-MVWNR16 Internal Boring Bar Tool Holder for CNC Lathe, Alloy Steel, 25mm Diameter, 200mm Length
Price shown is a starting point. Contact us for a precise quote based on your requirements.
Overview:
The S25S-MVWNR16 is a precision internal boring bar right tool holder designed for CNC machine tools and lathes. It features a tool cutting edge angle of 72.5° and a 0° relief angle of the blade. Constructed from durable alloy steel, it includes an M-type multi-lock system for secure clamping of inserts.
5-Point Description:
- Material: Made from high-grade alloy steel for strength and durability.
- Design: Internal turning tool holder with a 72.5° cutting edge angle.
- Specifications: Diameter: 25mm, Total Length: 200mm, Cutting Blade Length: 16mm.
- Compatibility: Compatible with VNMG160404, VNMG160408, VNMG160412, VNMG331, VNMG332, VNMG333 inserts.
- Complete Accessories Included: Pin CTM511, Clamp HL2114, Screw ML0620, and Wrench L2.0 L3.0
Specifications
- Model: S25S-MVWNR16
- Tool Cutting Edge Angle: 72.5°
- Relief Angle of Blade: 0°
- Material: Alloy Steel
- Diameter of Handle: 25mm
- Total Length: 200mm
- Length of Cutting Blade: 16mm
- Insert Compatibility: VNMG160404, VNMG160408, VNMG160412, VNMG331, VNMG332, VNMG333
- Tool Holder Type: Internal Boring Bar
- Pin: CTM511
- Clamp: HL2114
- Screw: ML0620
- Wrench: L2.0 / L3.0
- Locking System: M-type (multi-lock system)
Application:
The S25S-MVWNR16 Internal Boring Bar Tool Holder is specifically designed for use in CNC machine tools and CNC lathes. Versatile for different cutting tasks such as:Internal Turning,Boring Operations,Facing,Grooving and Parting.
S25S-MVWNR16 Internal Boring Bar Tool Holder - CNC Lathe Tool
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Overview of S25S-MVWNR16 Tool Holder
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Features of S25S-MVWNR16 Internal Turning Tool Holder
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Specifications and Dimensions of S25S-MVWNR16
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Alloy Steel Construction
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72.5° Cutting Edge Angle
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Compatible with VNMG Inserts
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Suitable for CNC Machining
Why Choose S25S-MVWNR16:
- Premium Material and Construction
- Optimized Cutting Geometry
- Versatile Insert Compatibility
- Secure and Stable Machining

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.
