S08K-SDWCR07 CNC Internal Cylinder Boring Bar Holder – Compact, High-Precision Internal Turning Tool
Price shown is a starting point. Contact us for a precise quote based on your requirements.
Key Features:
- Cutting Edge Angle: 62.5°
- Relief Angle: 7°
- Material: High-grade alloy steel
- Diameter of Handle: 8mm
- Total Length: 125mm
- Length of Cutting Blade: 7mm
- Screw Type: M2.5*6
- Wrench Type: T8
- Compatible Blades: DCMT070202,DCMT070204,DCMT070208, DCMT2(1.5)0, DCMT2(1.5)1,DCMT2(1.5)2
S08K-SDWCR07 CNC Internal Boring Bar Tool Holder – Precision Engineering in a Compact Design
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Efficient Internal Turning with 62.5° Cutting Edge Angle
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Durable Alloy Steel Construction for Reliable Performance
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Compact and Versatile Design for CNC Applications
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Enhanced Cutting Precision with 7° Blade Relief Angle
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Stable Operation with 8mm Diameter Handle
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Compatibility with Multiple DCMT Carbide Inserts
Application
The S08K-SDWCR07 is designed for internal turning operations in CNC machine tools and lathes. Its precision and durability make it suitable for a range of complex machining tasks requiring high accuracy.
5-Point Description
- Precision Cutting: Equipped with a 62.5° cutting edge angle and 7° blade relief angle for high-accuracy internal turning.
- Durable Construction: Made from alloy steel to ensure long-term performance and resistance to wear.
- Compact Design: The 8mm handle diameter provides excellent stability and control in a compact form factor.
- Versatile Compatibility: Supports various carbide inserts like DCMT070202, DCMT070204, DCMT070208, DCMT2(1.5)0, DCMT2(1.5)1, and DCMT2(1.5)2 for flexible machining options.
- Secure Adjustment: Features an S-type (screw-type) mechanism for precise blade positioning.
Overview
The S08K-SDWCR07 CNC Internal Boring Bar Tool Holder offers a blend of precision and compact design, making it ideal for internal turning tasks. With a 62.5° cutting edge angle and a 7° blade relief angle, this tool holder ensures sharp, accurate cuts and a smooth surface finish. Constructed from durable alloy steel, it promises long-lasting performance. The 8mm handle diameter provides stability, while its compatibility with a range of carbide inserts—including DCMT070202, DCMT070204, and DCMT070208—makes it versatile for various CNC machine tools and lathes.
Advantages
High Precision: Ensures accurate internal turning with optimal cutting angles.
Robust Material: Alloy steel construction offers long-lasting performance.
Compact and Stable: The 8mm handle diameter provides stability in a compact tool holder.


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.