BEYOND SP C40-4D-SD48-SP14 U Drill | 48mm 4D Indexable Blind Hole Drill
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BEYOND SP C40-4D-SD48-SP14
48mm 4D Precision U-Drill | The Blind Hole Machining Specialist
High-Efficiency 48mm Indexable Boring Solution
The BEYOND SP C40-4D-SD48-SP14 is a professional-grade indexable shallow hole drill engineered for high-stability CNC operations. Specifically designed as a blind hole specialist, the SP series utilizes square inserts to ensure a flat hole bottom and superior structural rigidity during large diameter drilling. With a 48mm cutting diameter and 4D depth (192mm), this tool is perfect for heavy-duty metal removal.
Decoding the Model: SP C40-4D-SD48-SP14
Metric & Imperial Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 48.0 mm | 1.889" |
| Shank Diameter (C) | 40.0 mm | 1.575" |
| Max Drilling Depth (4D) | 192.0 mm | 7.559" |
| Model Reference | SP-C1.50-4D-SD1.889-SP14 | |
Material Excellence & Spiral Flute Design
Forged Alloy Steel: The U-drill body is manufactured from high-strength 20CrMnTi alloy steel. This material undergoes a vacuum quenching process, achieving a surface hardness of HRC 52-56, providing excellent wear resistance for high-speed drilling.
Optimized Chip Flute: The spiral groove is widened to ensure smooth chip evacuation at 192mm depths. Equipped with dual internal cooling holes, it effectively cools the SPMG14 carbide inserts, extending tool life during rigorous CNC boring operations.
Recommended Cutting Parameters (48mm 4D)
Optimized for stable CNC machines. Ensure high torque for 48mm diameters:
- Cutting Speed (Vc): 110 - 170 m/min
- Feed Rate (f): 0.08 - 0.18 mm/rev
- Internal Cooling: Mandatory (High-pressure coolant flow required).
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 48}$$
SP Series: Advantages & Considerations
- Perfect for Blind Hole machining (flat bottom).
- Square SPMG14 inserts offer 4 cutting edges (economical).
- Higher body rigidity prevents "walking" at the start.
- Higher cutting resistance compared to WC series.
- Requires high-power CNC spindles for 48mm cuts.
Need a compatible 40mm Side-Lock Holder for this drill?
VIEW C40 SIDE-LOCK HOLDERSVerified Customer Reviews
"Solid 48mm U drill. Handles blind holes in 1045 steel perfectly."
- David R. (USA)
"Very good chip evacuation even at full depth. Best price for the quality."
- Hans P. (Germany)
"Fast shipping. The 40mm shank is very sturdy."
- Liam O. (UK)
"Ottimo prodotto, foratura precisa su CNC."
- Paolo B. (Italy)
"Beyond delivers again. Solid boring tool."
- Ricardo M. (Brazil)
Technical Q&A
Q: Can I use this for through holes?
A: Yes, it can drill through holes, but the SP series is specifically optimized for blind holes to provide a flatter finish at the bottom.
Q: Does it include the wrench and screws?
A: Yes, all necessary insert screws and wrenches are included. Inserts must be purchased separately.
Q: What is the recommended coolant pressure?
A: For a 48mm 4D drill, we recommend at least 1.5 - 2.0 MPa for effective chip removal.
Machinist Tip: SP vs. WC U-Drills
SP Series (Square): The professional choice for Blind Hole Machining. Square inserts create a flatter bottom and offer maximum core strength for large diameters.
WC Series (Trigon): Primarily used for Through Hole applications. WC inserts offer lower cutting resistance but are less effective for blind bores.
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.