BEYOND SP C40-3D-SD45-SP14 Indexable U-Drill Body | 45mm 3D CNC Boring Drill
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BEYOND SP C40-3D-SD45-SP14
45mm 3D Heavy-Duty U-Drill | Large Diameter Blind Hole Boring Specialist
Industrial-Grade 45mm Indexable Boring Solution
The BEYOND SP C40-3D-SD45-SP14 is a professional-grade indexable insert drill engineered for maximum stability in large diameter boring operations. With a 45mm cutting diameter and a 3D depth ratio (135mm 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 on heavy-duty CNC lathes.
Decoding the Model: SP C40-3D-SD45-SP14
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 45.0 mm | 1.771" |
| Shank Diameter (C) | 40.0 mm | 1.575" |
| Max Drilling Depth (3D) | 135.0 mm | 5.315" |
| Equivalent Model | SP-C1.575-3D-SD1.771-SP14 | |
Reinforced 20CrMnTi Alloy & High-Efficiency Flute
Industrial-Grade Build: This indexable drill body is forged from premium 20CrMnTi alloy steel. Through a vacuum quenching and hardening process (HRC 52-55), it provides the extreme rigidity needed for large diameter drilling, preventing chatter and ensuring a high-quality surface finish in heavy-duty CNC applications.
Optimized Spiral Flute: The U-drill features an optimized spiral flute (U-groove) design with wide chip pockets. Combined with dual internal cooling holes, it allows high-pressure coolant to flush metal chips out of 135mm deep bores instantly, protecting the carbide inserts from thermal failure during blind hole machining.
Recommended Cutting Parameters (45mm 3D)
Suggested for Carbon Steel (HB < 250). Adjust based on machine torque:
- Cutting Speed (Vc): 100 - 160 m/min
- Feed Rate (f): 0.08 - 0.16 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 45}$$
- Coolant: High-pressure internal cooling is mandatory for 45mm 3D depth.
Looking for a compatible side-lock holder for the 40mm shank?
SHOP COMPATIBLE C40 TOOL HOLDERSVerified Customer Reviews
"Outstanding Stability"
"Drilling 45mm holes in stainless steel is usually a nightmare, but this BEYOND drill body is incredibly rigid. Highly recommend for any CNC shop."
- Robert H. (Germany)
"Clear Chip Flow"
"The internal cooling is powerful. No chip packing even at the bottom of 135mm bores."
- Marek W. (Poland)
"Industrial quality at a fair price. The SPMG14 pockets are very accurate."
- Pedro S. (Brazil)
"Solid 45mm U-drill. Delivery to the UK was quick."
- Arthur L. (UK)
"Perfect for our mass production line. Very reliable."
- 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).
- Massive 40mm shank provides maximum torque transmission.
- Requires high-power machine due to 45mm diameter load.
- Dependency on high-flow internal coolant for 135mm reach.
Technical Q&A
Q: Why is SP better than WC for blind holes?
A: SP square inserts provide a flatter bottom profile. Additionally, the tool body core is thicker and more rigid, which is essential for large diameter boring.
Q: Does this include the inserts?
A: No, this is for the tool body only. It is compatible with SPMG140512 carbide inserts.
Q: What is the benefit of the Side-Lock (C40) shank?
A: The 40mm straight shank allows for massive clamping force, preventing tool slip or rotation under high torque.
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 cutting edges but the body core is thinner, making it less rigid for 45mm heavy-duty 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.