BEYOND SP C40-2D-SD47-SP14 Indexable U-Drill Body | 47mm 2D CNC Boring Drill
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BEYOND SP C40-2D-SD47-SP14
47mm 2D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
Industrial-Grade 47mm Indexable Boring Solution
The BEYOND SP C40-2D-SD47-SP14 is a professional indexable insert drill engineered for high-torque CNC boring and large-diameter metal removal. With a 47mm cutting diameter and a 2D depth ratio (94mm reach), this tool is the industry standard 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-SD47-SP14
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 47.0 mm | 1.850" |
| Shank Diameter (C) | 40.0 mm | 1.574" |
| Max Drilling Depth (2D) | 94.0 mm | 3.700" |
| Equivalent Model | SP-C1.57-2D-SD1.85-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 47mm 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 (47mm 2D)
Optimal settings for Carbon Steel and Alloy Steel. Adjust based on CNC rigidity and torque:
Rotation Speed (N) = (Vc × 1000) / (π × 47)
Vc = Cutting Speed | π ≈ 3.14 | D = 47mm
- Cutting Speed (Vc): 100 - 180 m/min
- Feed Rate (f): 0.08 - 0.15 mm/rev
- Coolant: Center-through internal cooling is mandatory for 47mm bores.
Pair with a high-rigidity Side-Lock C40 Holder for maximum stability:
SHOP COMPATIBLE C40 TOOL HOLDERSVerified Global Reviews
"Massive Performance"
"I was worried about vibration at 47mm, but this tool body is incredibly rigid. The blind hole finish is perfect."
- David K. (USA)
"Excellent chip evacuation. The spiral flute is designed for high-volume removal."
- Lars H. (Sweden)
"Great value for an industrial-sized drill. Using it on our CNC lathe daily."
- Sergio V. (Mexico)
"Standard SPMG14 inserts fit perfectly with no movement."
- P. Dubois (France)
"BEYOND tools never disappoint. Rigidity is on par with premium brands."
- R. Singh (India)
SP Series Indexable Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 cutting edges—maximum economy.
- Designed specifically for Blind Hole Machining (Flatter hole bottom).
- Increased core thickness for high stability during 47mm boring.
- High horsepower machine requirement due to the 47mm tool surface.
- Needs high coolant pressure to ensure chips don't recycle in the bore.
Technical Q&A
Q: Why is SP preferred over WC for 47mm blind bores?
A: SP square inserts provide a flatter profile at the hole bottom. Additionally, the SP body core is structurally thicker at this diameter, significantly reducing vibration compared to WC designs.
Q: What insert size does this use?
A: This model uses standard SPMG140512 carbide inserts. We offer various grades for different metals in our store.
Q: What does the 2D signify?
A: 2D indicates the drilling depth capacity is 2x the diameter. For this 47mm drill, you can bore up to 94mm deep.
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 47mm 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.