S25R-MDUNR11 Internal Boring Bar Tool Holder for CNC Lathe Compatible with CNMG Inserts, 25mm Diameter
Price shown is a starting point. Contact us for a precise quote based on your requirements.
Product Name:S25R-MDUNR11 Internal lathe boring bar holder
Overview:The S25R-MDUNR11 is an internal boring bar designed for precision machining applications on CNC lathes. Crafted from durable alloy steel with a multi-lock system, this tool holder ensures stability and reliability during machining operations. It features a 25mm diameter handle and a total length of 200mm, with a cutting blade length of 11mm. The tool is compatible with a range of inserts including DNMG110404, DNMG110408, DNMG331, and DNMG332, offering versatility for various internal turning tasks.
Detail Page:
- Material: Alloy Steel
- Type: Internal Boring Bar, Right Tool Holder
- Model: S25R-MDUNR11
- Handle Diameter: 25mm
- Total Length: 200mm
- Cutting Blade Length: 11mm
- Cutting Edge Angle: 95°
- Relief Angle: 0°
- Insert Compatibility: DNMG110404, DNMG110408, DNMG331, DNMG332
- Accessories: CTM511 pin, HL1810 clamp, ML0620 screw, L2.0 L3.0 wrenches
Applications:
- Ideal for use in CNC machine tools, CNC lathes, and machining centers.
- Suitable for various machining operations, providing stability and precision.
Package Includes:
- S25R-MDUNR11 Tool Holder
- Compatible Clamps,Pins, Screws, and Wrenches
5-Point Description:
- Precision Machining: Designed for accurate internal turning operations with a cutting edge angle of 95° and a relief angle of 0°.
- Durable Construction: Made from high-quality alloy steel for durability and long-term performance.
- Multi-Lock System: Features an M-type multi-lock system for secure tool clamping, minimizing vibration and enhancing machining precision.
- Versatile Compatibility: Compatible with DNMG inserts (DNMG110404, DNMG110408, DNMG331, DNMG332) for versatility in machining different materials.
- Complete Tool Kit: Includes essential accessories such as CTM511 pin, HL1810 clamp, ML0620 screw, and L2.0/L3.0 wrenches for convenient setup and maintenance.
CNC Lathe Tool Holder S25R-MDUNR11 S25R MDUNR11 Internal Boring Bar Tool Holder small boring bar
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Precision Machining Tool for CNC Lathes
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Alloy Steel Construction, 25mm Diameter Handle
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DNMG Insert Compatibility
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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.