S25S-MDUNR15 Internal Boring Bar Tool Holder for CNC Lathes - Alloy Steel, 25mm Diameter Handle Compatible with DNMG Inserts
Price shown is a starting point. Contact us for a precise quote based on your requirements.
Features:
- Material: Alloy Steel
- Tool Holder Type: Internal Boring Bar, Right Tool Holder
- Cutting Edge Angle: 95°
- Relief Angle of Blade: 0°
- Diameter of Handle: 25mm
- Total Length: 250mm
- Length of Cutting Blade: 15mm
- Pin: CTM613
- Clamp: HL2114
- Screw: ML0625
- Wrench: L3.0
- Insert Compatibility:DNMG150404 DNMG150408 DNMG150412 DNMG431 DNMG432 DNMG433
5-Point Description:
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Precision Machining Capability: Designed for internal turning and boring operations with a cutting edge angle of 95° and a 0° relief angle on the blade.
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Durable Alloy Steel Construction: Made from high-quality alloy steel, providing longevity and resilience in machining environments.
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Versatile Insert Compatibility: Supports DNMG150404, DNMG150408, DNMG150412, DNMG431, DNMG432, and DNMG433 inserts, offering flexibility for various materials and applications.
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Secure Multi-Lock System: Features an M-type multi-lock system with CTM613 pins, HL2114 clamps, ML0625 screws, and an L3.0 wrench for stable and efficient tool clamping.
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Optimized Dimensions: 25mm diameter handle, 250mm total length, and a 15mm cutting blade length, ensuring ergonomic handling and effective machining performance.
S25S-MDUNR15 advantages:
- Material Quality: Constructed from high-quality alloy steel, ensuring durability and prolonged tool life even under demanding machining conditions.
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Design for Precision: The tool features a well-engineered design that enhances precision machining. It includes a 95° cutting edge angle and 0° relief angle, optimizing chip control and surface finish.
- Versatility: Compatible with a variety of inserts, such as DNMG110404, DNMG110408, DNMG150404, and DNMG150408, the boring bar supports a wide range of internal turning applications. This versatility allows machinists to handle different materials and machining tasks effectively.
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Ease of Use: Designed for user convenience, the S25S-MDUNR15 comes with necessary accessories like pins, clamps, screws, and wrenches, facilitating easy setup and maintenance.
- Application Specificity: Ideal for CNC machine tools and lathes, the S25S-MDUNR15 is tailored for internal turning operations, making it suitable for various industrial applications.
S25R-MDUNR11 Internal Boring Bar Holder | CNC Lathe Tool engine boring bar S25R MDUNR11
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CNC Lathe Tool Holder
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DNMG Insert Compatibility
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15mm Cutting Blade Length
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Precision Machining Tool
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Reliable Tool Clamping
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CNC Machine Tool Accessories
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.