S20R-MTLNR16 Internal Boring Bar Tool Holder | Alloy Steel, 95° Cutting Edge Angle
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S20R-MTLNR16 Internal Boring Bar Tool Holder | Alloy Steel, M-Type
Introduction | Specifications | Dimensions
Overview:
The S20R-MTLNR16 is a robust internal boring bar tool holder designed for precise machining operations in CNC machine tools and lathes. It features a 95° cutting edge angle and 0° relief angle, ensuring efficient chip control and optimal performance during internal turning tasks.
Detail Page:
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Material: Alloy Steel
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Model: S20R-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: 20mm
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Total Length: 200mm
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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
Advantages and Applications of S20R-MTLNR16
Advantages:
- Precision Machining: Offers a 95° cutting edge angle and 0° relief angle for precise internal turning.
- Durable Construction: Made from high-quality alloy steel for longevity and reliability.
- Secure Holding: Features an M-type multi-lock system for secure clamping of cutting tools.
- Versatile Compatibility: Compatible with a wide range of carbide inserts (TNMG series) for various machining applications.
- Ease of Use: Includes wrenches (L2.0, L3.0) for convenient setup and maintenance on CNC machines.
Application:
The S20R-MTLNR16 tool holder is ideal for use in CNC machine tools and lathes, specifically designed for internal turning operations. Its sturdy construction and multi-lock system (M-type) ensure secure tool holding and stability, enhancing machining accuracy.
Description and why you choose us
5-Point Description:
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Precision Machining: The S20R-MTLNR16 is engineered for precise internal turning operations, featuring a 95° cutting edge angle and 0° relief angle. It ensures accuracy and high-quality surface finishes.
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Durable Construction: Crafted from alloy steel, this tool holder offers exceptional durability and reliability, making it suitable for prolonged use in demanding CNC machining environments.
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Secure Clamping: Utilizes an M-type multi-lock system for secure clamping of cutting tools, minimizing vibrations and enhancing machining stability during operation.
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Versatile Compatibility: Compatible with a range of TNMG series carbide inserts, it accommodates various machining needs and materials, from ferrous metals to non-ferrous alloys.
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Ease of Maintenance: Includes necessary components like pins, clamps, screws, and wrenches (L2.0, L3.0) for easy setup, adjustment, and maintenance, ensuring efficient workflow on CNC lathes and machines.
Why Choose S20R-MTLNR16:
- High-quality construction for durability and longevity.
- Precise machining with a reliable multi-lock system.
- Wide compatibility with standard TNMG inserts.
Overall, the S20R-MTLNR16 is favored for its precise performance, durability under demanding conditions, and versatility across various machining tasks, making it a preferred choice in the realm of internal boring bar tool holders.


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.