S20R-MDQNL11 Internal lathe boring bar holder | Alloy Steel | 107.5° Cutting Edge Angle accommodates DNMG
Price shown is a starting point. Contact us for a precise quote based on your requirements.
S20R-MDQNL11 Internal Turning Tools Holder S20R MDQNL11 Boring Bar CNC Lathe Cutter Machine Carbide Inserts DNMG
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Specifications, Features, Insert Compatibility, Applications
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Alloy Steel Construction, CNC Machine Tool, Internal Turning Tools Holder
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Compatible with Standard DNMG Inserts
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107.5° Cutting Edge Angle for Precision Machining
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Robust Construction with 20mm Shank
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Ideal for Various Machining Operations
Product Name:S20R-MDQNL11 Internal Boring Bar Tool Holder
Overview:The S20R-MDQNL11 Internal Boring Bar Tool Holder is crafted from robust alloy steel, ensuring durability and reliability in machining operations. It features a precise 107.5° cutting edge angle and 0° relief angle, making it suitable for internal turning tasks on CNC lathes. With a 20mm handle diameter and 200mm total length, this tool holder accommodates DNMG inserts (DNMG110404, DNMG110408, DNMG331, DNMG332)
Package Includes:
- S20R-MDQNL11 Tool Holder
- Compatible Clamp Pin Screws and Wrenches
Application: CNC machine tools, CNC lathes Lathe machining cutting
Why Choose S20R-MDQNL11:Precision Machining: The S20R-MDQNL11 is crafted from durable alloy steel and features a precise 107.5° cutting edge angle, ideal for achieving high precision in internal turning operations on CNC lathes.Designed to accommodate DNMG inserts (DNMG110404, DNMG110408, DNMG331, DNMG332)
Specifications and Dimensions:
- Tool Holder Type: Internal Boring Bar Tool Holder
- Model: S20R-MDQNL11
- Material: Alloy Steel
- Tool Cutting Edge Angle: 107.5°
- Relief Angle of Blade: 0°
- Handle Diameter: 20mm
- Total Length: 200mm
- Length of Cutting Blade: 11mm
- Pin: CTM511
- Clamp: HL1810
- Screw: ML0625
- Wrench: L2.0 L3.0
- Blade Inserts Compatibility: DNMG110404, DNMG110408, DNMG331, DNMG332


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.