S25S-MTLNR16 Precision Internal Turning Tool Holder | boring bar tool holder 25*250mm
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Internal Boring Bar Tool Holder | CNC Iathe boring bar S25S-MTLNR16
Details (Overview and Specifications)
Overview:
The S25S-MTLNR16 is an advanced internal boring bar tool holder designed for precision machining applications on CNC machine tools and lathes. This tool holder is equipped with a 95° cutting edge angle and a 0° relief angle, facilitating precise internal turning operations and achieving high-quality surface finishes.
Specifications:
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Material: Alloy Steel
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Model: S25R-MTLNR16
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Tool Type: Internal Turning Tools Holder
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Cutting Edge Angle: 95°
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Relief Angle of Blade: 0°
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Diameter of Handle: 25mm
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Total Length: 250mm
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Length of Cutting Blade: 16mm
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Components: Pin CTM511, Clamp HL1810, Screw ML0625, Wrench L2.0, L3.0
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Blades Compatibility: TNMG160402, TNMG160404, TNMG160408, TNMG160412, TNMG160416, TNMG331, TNMG332, TNMG333
Precision Tool for CNC Machining
Advantages:
- Precision Machining: 95° cutting edge angle and 0° relief angle for precise internal turning.
- Durable Construction: Made from alloy steel for reliability in demanding machining environments.
- Secure Clamping: M-type multi-lock system ensures stable tool holding and reduced vibration.
- Versatile Compatibility: Compatible with multiple TNMG inserts for diverse material machining.
- Ease of Use: Includes all necessary accessories for easy setup and maintenance on CNC machines.
Application:
The S25S-MTLNR16 is primarily used in CNC machine tools and lathes for internal turning operations. It accommodates TNMG series carbide inserts, making it suitable for machining a wide range of materials, including metals and alloys.
5-Point Product Description for S25S-MTLNR16:
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Precision Machining: Designed for internal turning operations with a 95° cutting edge angle and 0° relief angle, ensuring precise results and high-quality surface finishes.
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Durable Construction: Made from robust alloy steel, the S25S-MTLNR16 offers durability and reliability, suitable for continuous use in CNC machine tools and lathes.
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Secure Clamping System: Features an M-type multi-lock system for secure clamping of TNMG series carbide inserts, providing stability and reducing vibration during machining.
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Versatile Compatibility: Compatible with a wide range of TNMG inserts (TNMG160402, TNMG160404, TNMG160408, TNMG160412, TNMG160416, TNMG331, TNMG332, TNMG333), it supports machining of various materials from standard metals to challenging alloys.
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Easy Maintenance: Includes essential accessories such as the CTM511 pin, HL1810 clamp, ML0625 screw, and L2.0/L3.0 wrenches for easy assembly, adjustment, and maintenance on CNC machines.
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.