BEYOND SP C40-5D-SD45-SP14 Indexable U-Drill | 45mm Large Diameter CNC Deep Hole Drill
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BEYOND SP C40-5D-SD45-SP14
Industrial 45mm 5D Deep Hole U-Drill | Professional CNC Indexable Boring Body
High-Performance 45mm Deep Hole Machining
The BEYOND SP C40-5D-SD45-SP14 is a professional-grade indexable insert drill engineered for large-diameter, high-volume material removal. Featuring a 45mm cutting diameter and an impressive 5D depth ratio, this fast hole U-drill is the ultimate solution for deep hole boring in massive workpieces. Designed for CNC lathe metal boring, it utilizes optimized internal cooling to handle extreme thermal loads during high-speed drilling in carbon steel, alloy, and stainless steel.
Technical Model Identification Guide
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 45.0 mm | 1.771" |
| Shank Diameter | 40.0 mm | 1.574" |
| Max Drilling Depth (5D) | 225.0 mm | 8.858" |
| Product Model | SP C40-5D-SD45 | SP1.57-5D-SD1.77 |
High-Rigidity 20CrMnTi Alloy & Advanced Spiral Flute
Industrial-Grade Body Material: Deep hole drilling with a 45mm diameter generates immense torque. This indexable drill body is forged from 20CrMnTi high-strength alloy steel. The body is vacuum-quenched to achieve high surface hardness with a flexible core, ensuring it withstands long-reach boring up to 225mm without catastrophic failure.
Large-Capacity Spiral Flute (U-Groove): The spiral flute geometry is extra-wide to accommodate the massive chip load of a 45mm head. Paired with internal cooling holes, it ensures that chips are flushed from the bottom of the cavity instantly, protecting the SPMG14 carbide inserts from re-cutting and heat buildup.
Recommended Cutting Parameters (5D 45mm)
Optimize your CNC machining with these baseline settings:
- Cutting Speed (Vc): 80 - 150 m/min (Standard Steel).
- Feed Rate (f): 0.08 - 0.14 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 45}$$
- Requirement: High-pressure internal cooling is mandatory for 5D depth to prevent chip packing.
SP Type U-Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 usable cutting edges (extremely cost-effective).
- Superior verticality and straightness in deep 5D holes.
- Better wall finish than WC-type drills in large diameters.
- High cutting force; requires a machine with high spindle power.
- Coolant volume is critical to flush large 45mm chips.
Verified Customer Feedback
"Workhorse Tool"
"Drilling 45mm holes in 4140 steel. Perfectly stable. The 5D reach is great for heavy boring."
- Jonathan R. (USA)"Top Tier Value"
"Equivalent to high-end brands. Very rigid body and excellent chip evacuation."
- Lukas H. (Germany)"Fast chip flow"
"No packing issues at 200mm depth with 20 bar coolant. Great tool."
- Yukihiro M. (Japan)"Solid build"
- Alessandro P. (Italy)
"Highly reliable"
- Francois L. (France)
Expert Drilling Q&A
Q: What is the benefit of the Side-Lock (C40) shank?
A: The C40 shank allows for massive clamping force, preventing the tool from rotating in the holder under the high torque of a 45mm cut.
Q: Do I need a pilot hole for 5D drilling?
A: For large diameters like 45mm, starting with a 1D or 2D U-drill for the first 30mm significantly improves the hole verticality for the 5D follow-up.
Q: Is this suitable for Stainless Steel?
A: Yes, provided you use the correct SPMG14 insert grade and ensure high-volume internal coolant to manage heat.
Technical Tip: WC vs. SP U-Drills
WC Series (Trigon): Best for general purpose and light-to-medium drilling. High cost-efficiency on smaller machines.
SP Series (Square): The industry standard for Deep Hole (5D) and large diameters. The square insert geometry provides superior balance and core strength, resulting in straighter holes and better dimensional tolerance in heavy-duty CNC machining.
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.