BEYOND SP C40-5D-SD48-SP14 Indexable U-Drill | 48mm Large Diameter CNC Deep Hole Drill
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BEYOND SP C40-5D-SD48-SP14
Heavy-Duty 48mm 5D Deep Hole U-Drill | Industrial CNC Indexable Boring Body
Superior 48mm Deep Hole Machining Capability
The BEYOND SP C40-5D-SD48-SP14 is a professional indexable insert drill engineered for large-diameter, high-volume material removal. Featuring a 48mm 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 of carbon steel, alloy, and stainless steel.
Technical Model Identification
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 48.0 mm | 1.889" |
| Shank Diameter | 40.0 mm | 1.574" |
| Max Drilling Depth (5D) | 240.0 mm | 9.448" |
| Product Model | SP C40-5D-SD48 | SP1.57-5D-SD1.89 |
High-Rigidity 20CrMnTi Alloy & Advanced Spiral Flute
Industrial-Grade Body Material: Deep hole drilling with a 48mm 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 shallow hole drilling and deep 240mm penetration without catastrophic failure.
Large-Capacity Spiral Flute (U-Groove): The spiral flute geometry is extra-wide to accommodate the massive chip load of a 48mm 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 48mm)
Optimize your CNC machining with these baseline settings:
- Cutting Speed (Vc): 80 - 150 m/min (Material dependent).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 48}$$
- Requirement: High-pressure internal cooling (Min 2.0 MPa) is essential for 5D depth.
SP Type U-Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 usable cutting edges (most cost-effective).
- Superior verticality and straightness in deep 5D holes.
- Better hole wall finish than WC-type drills in large diameters.
- Higher cutting force; requires a machine with high spindle power.
- Coolant volume is critical to flush large 48mm chips.
Verified Customer Feedback
"Incredible Stability"
"Drilling 48mm through thick plate steel. This tool is a tank. Very straight holes at full 5D depth."
- Robert H. (USA)"Professional Gear"
"BEYOND tool bodies are significantly cheaper than big brands but the quality is 1:1. Highly recommended for CNC shops."
- Markus G. (Germany)"Perfect chip flow"
"The internal coolant holes are massive. Chips clear instantly. Very fast delivery to Japan."
- Kenji T. (Japan)"Heavy-duty build"
- Luca B. (Italy)
"Great quality body"
- Pierre R. (France)
Frequently Asked Questions
Q: Why is the shank called C40?
A: C40 refers to the 40mm Side-Lock (Weldon) shank style, which provides the high clamping force necessary for a 48mm diameter cut.
Q: Do I need a pilot hole for 5D drilling?
A: For large diameters like 48mm, starting with a 1D or 2D U-drill for the first 30mm significantly improves the hole verticality for the 5D follow-up.
Q: Can this drill handle uneven surfaces?
A: Yes, SP drills are excellent for angled entries, but we recommend reducing the feed by 50% until the tool is fully engaged.
Deep Hole Pro Tip: 2D vs. 5D
2D Drills: Maximum rigidity for roughing. Best for high-feed rates and short depths.
5D Drills: Built for reach. Due to the 240mm length of this body, it is more susceptible to lateral forces. Always ensure your workpiece is clamped rigidly and your spindle is calibrated to prevent tool deflection.
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.