BEYOND SP C40-5D-SD42-SP14 Indexable U-Drill | 42mm CNC Deep Hole Drill Body
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BEYOND SP C40-5D-SD42-SP14
Professional 42mm 5D Deep Hole U-Drill | High-Rigidity CNC Indexable Boring Body
Industrial-Grade 42mm Deep Hole Machining
The BEYOND SP C40-5D-SD42-SP14 is a high-performance indexable insert drill engineered for large-diameter metal removal. With a 42mm cutting diameter and a massive 5D depth-to-diameter ratio, this fast hole U-drill is the ultimate solution for deep hole boring in heavy industrial workpieces. Optimized for CNC lathe metal boring, it features advanced internal cooling to manage heat during high-speed drilling of carbon steel, alloy, and stainless steel.
Technical Model Identification Guide
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drill Diameter (SD) | 42.0 mm | 1.653" |
| Shank Diameter (C) | 40.0 mm | 1.574" |
| Max Drilling Depth (5D) | 210.0 mm | 8.267" |
| Compatible Inserts | SPMG140508 | SPMG 4.53 |
Premium 20CrMnTi Alloy & Advanced Spiral Flute
Durable Tool Body Material: This indexable drill body is forged from 20CrMnTi high-strength alloy steel. The body is vacuum-quenched to achieve a high surface hardness while maintaining a flexible, shock-resistant core, allowing it to withstand the extreme torque of shallow hole drilling and deep 210mm penetration.
Optimized Spiral Flute (U-Groove): The spiral flute geometry is extra-wide to ensure smooth chip evacuation for 42mm bores. Combined with dual internal cooling holes, it allows high-pressure coolant to flush chips instantly, protecting your SPMG14 carbide inserts from re-cutting and heat-related failure.
Recommended Cutting Parameters (5D 42mm)
Baseline settings for optimal CNC performance:
- Cutting Speed (Vc): 80 - 160 m/min (Material dependent).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 42}$$
- Requirement: High-pressure internal cooling (Min 1.5 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.
- Excellent wall finish in large-diameter metal boring.
- Requires high spindle power due to square insert resistance.
- Coolant volume is critical to flush 42mm diameter chips.
Verified Customer Feedback
"Solid and Reliable"
"Drilling 42mm in structural steel plate. The 5D reach is perfectly stable. No vibration."
- Robert H. (USA)"Best value for money"
"Cheaper than the big brands but performance is identical. We run these on our DMG Mori."
- Klaus S. (Germany)"Perfect chip clearance"
"The spiral flute is deep enough that chips never jam. Internal cooling is very strong."
- Kenji T. (Japan)"Impressive longevity"
- Luca B. (Italy)
"Fast shipping, great tool"
- Pierre R. (France)
Frequently Asked Questions
Q: What is the benefit of the C40 shank?
A: The 40mm Side-Lock (Weldon) shank provides the massive clamping surface needed to prevent tool slippage under the high torque of a 42mm cut.
Q: Should I use a pilot hole for 5D drilling?
A: For maximum precision in 5D depths, we recommend starting with a 1D or 2D U-drill for the first 20-30mm to ensure the 5D follows a straight path.
Q: Does this include the screws and wrench?
A: Yes, all BEYOND U-drill bodies include the insert mounting screws and the appropriate flag-style wrench.
Technical Tip: WC vs. SP U-Drills
WC Series (Trigon): Best for general-purpose drilling on machines with lower spindle power. Lower cost per edge but less rigidity for deep holes.
SP Series (Square): The professional choice for Deep Hole (5D) drilling. The SPMG square insert provides superior core strength and a balanced cutting force, resulting in straighter holes and better dimensional stability in demanding CNC machining environments.
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.