BEYOND SP C40-2D-SD46-SP14 Indexable U-Drill Body | 46mm 2D CNC Boring Drill
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BEYOND SP C40-2D-SD46-SP14
46mm 2D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
Industrial-Grade 46mm Indexable Boring Solution
The BEYOND SP C40-2D-SD46-SP14 is a professional indexable insert drill engineered for high-torque CNC boring and high-speed metal removal. With a 46mm cutting diameter and a 2D depth ratio (92mm reach), this tool is the primary choice for blind hole machining. Featuring internal cooling and a precision-engineered spiral flute, it ensures rapid chip evacuation and superior surface finish in steel, alloys, and stainless steel.
Decoding the Model: SP C40-2D-SD46-SP14
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 46.0 mm | 1.811" |
| Shank Diameter (C) | 40.0 mm | 1.574" |
| Max Drilling Depth (2D) | 92.0 mm | 3.622" |
| Equivalent Model | SP-C1.574-2D-SD1.811-SP14 | |
Forged 20CrMnTi Alloy & High-Efficiency Spiral Flutes
Industrial Build: This indexable drill body is forged from premium 20CrMnTi alloy steel and vacuum quenched (HRC 52-55). This core strength is critical for large diameter drilling stability and preventing tool deflection. The surface features a Black Oxide finish to resist corrosion and thermal wear during rapid hole boring.
Advanced Slot Design: The U-drill features an optimized spiral flute (U-groove) specifically engineered to evacuate the high volume of chips produced by a 46mm bore. Integrated internal cooling holes allow high-pressure coolant to flush metal chips directly out of the cutting zone, essential for successful blind hole machining.
Recommended Cutting Parameters (46mm 2D)
Optimal settings for Carbon Steel and Alloy Steel. Adjust based on CNC rigidity and torque:
Rotation Speed (N) = (Vc × 1000) / (π × 46)
Vc = Cutting Speed | π ≈ 3.14 | D = 46mm
- Cutting Speed (Vc): 100 - 180 m/min
- Feed Rate (f): 0.08 - 0.15 mm/rev
- Coolant: Center-through internal cooling is mandatory for 46mm 2D depth.
Pair with a high-rigidity BEYOND Side-Lock C40 Holder for maximum stability:
SHOP COMPATIBLE C40 TOOL HOLDERSVerified Global Reviews
"Massive Performance"
"Using this for 46mm blind holes in 4140 steel. The body is extremely rigid and chip evacuation is flawless."
- David K. (USA)
"Excellent chip flow. The internal coolant holes are aligned perfectly for 46mm bores."
- Marek W. (Poland)
"Matches our SPMG14 inserts with zero play. Highly recommended for CNC production."
- Pedro S. (Brazil)
"Solid value. The tool life on the body itself is impressive even under heavy load."
- Arthur L. (UK)
"BEYOND delivers as promised. This 46mm drill handles industrial tasks effortlessly."
- Y. Watanabe (Japan)
SP Series Indexable Drill: Advantages & Considerations
- Uses 4-edge SPMG square inserts for lower cost-per-edge.
- Optimized for Blind Hole Machining (Flatter hole bottom profile).
- Reinforced body core provides maximum rigidity for 46mm diameters.
- Requires high horsepower CNC machines to drive large diameter inserts effectively.
- Performance is highly dependent on high-pressure internal coolant.
Technical Q&A
Q: Why choose SP over WC for blind hole drilling?
A: SP square inserts create a significantly flatter bottom. The SP body is also designed with a thicker core, which is essential for stability in large diameter boring.
Q: Is this tool body compatible with all SPMG14 inserts?
A: It is designed for standard SPMG140512 carbide inserts. Using BEYOND brand inserts is recommended for the best fit.
Q: What is the maximum depth for this 2D drill?
A: The 2D indicates 2x the diameter. For a 46mm drill, the maximum effective drilling depth is 92mm.
Machinist Tip: SP vs. WC U-Drills
SP Series (Square): The professional choice for Blind Hole (Blind Bores). Square inserts create a flatter bottom and offer maximum core strength for large diameter machining.
WC Series (Trigon): Primarily used for Through Hole applications. WC inserts offer more edges but the body core is thinner, making it less rigid for 46mm tasks.
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.