BEYOND SP C40-4D-SD45-SP14 Indexable U-Drill Body | 45mm 4D CNC Deep Hole Drill
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BEYOND SP C40-4D-SD45-SP14
45mm 4D Heavy-Duty U-Drill | Industrial Blind Hole Boring Specialist
High-Rigidity 45mm Deep Hole Boring Specialist
The BEYOND SP C40-4D-SD45-SP14 is a professional-grade indexable insert drill engineered for extreme stability during large diameter drilling. With a 45mm cutting diameter and a 4D depth ratio (180mm reach), this tool is the primary choice for blind hole machining. Featuring internal cooling channels and a high-efficiency spiral flute, it ensures rapid chip evacuation and a superior surface finish on CNC lathes and machining centers.
Decoding the Model: SP C40-4D-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 (4D) | 180.0 mm | 7.086" |
| Imperial Model Equivalent | SP-C1.50-4D-SD1.771-SP14 | |
High-Strength 20CrMnTi Alloy & Spiral U-Groove
Superior Tool Body Material: This indexable drill body is forged from 20CrMnTi alloy steel. The surface is vacuum-quenched (HRC 52-55), providing incredible wear resistance and preventing tool deflection during deep hole boring. The shock-resistant core handles interrupted cuts with ease.
Optimized Spiral Flute: The specialized spiral U-groove geometry features wide chip pockets designed for massive material removal. Combined with dual internal cooling holes, it allows high-pressure fluid to flush metal chips out of 180mm deep bores instantly, protecting your SPMG14 carbide inserts from thermal failure.
Recommended Cutting Parameters (45mm 4D)
Suggested for Carbon Steel (HB < 250). Adjust based on machine rigidity:
- Cutting Speed (Vc): 110 - 160 m/min
- Feed Rate (f): 0.08 - 0.18 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 45}$$
- Coolant: High-pressure internal cooling (Thru-spindle) is mandatory for 4D depth.
Need a heavy-duty side-lock holder for the 40mm shank?
SHOP COMPATIBLE C40 TOOL HOLDERSVerified Customer Reviews
"Massive Performance"
"Using this for blind holes in 1045 steel. The BEYOND body is extremely rigid and the hole bottom is very clean."
- Jason R. (USA)
"Excellent Chip Control"
"Internal cooling flushes chips out perfectly even at 180mm deep. Great build quality."
- Klaus M. (Germany)
"Impressive tool. Arrived quickly in Brazil. Highly recommended for CNC shops."
- Paulo S. (Brazil)
"Flat hole bottom is exactly what I needed for this project. SP series is the way to go."
- Kenji Y. (Japan)
"Solid 45mm U-drill. Beyond delivers quality every time."
- David L. (UK)
SP Series: Advantages & Considerations
- Uses 4-edge SPMG square inserts for better cost-per-edge.
- Optimized for Blind Hole Machining (Cleaner hole bottom).
- Thicker core design provides higher rigidity for 4D deep drilling.
- Higher power/torque requirement for large 45mm diameter.
- Requires high-pressure coolant to ensure chip evacuation at 4D.
Technical Q&A
Q: Why is SP better than WC for blind holes?
A: SP square inserts provide a flatter profile at the bottom of the bore. The SP body is also inherently more rigid, which is vital for maintaining verticality at 4D depths.
Q: Does this include the inserts?
A: No, this is for the tool body only. You will need SPMG140512 carbide inserts.
Q: What machine do I need?
A: You need a CNC machine with a 40mm side-lock holder and sufficient torque to handle a 45mm cut diameter.
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 4D-5D deep hole boring.
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 than SP for extreme depths.
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.