BEYOND SP C40-4D-SD46-SP14 Indexable U-Drill Body | 46mm 4D CNC Large Hole Drill
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BEYOND SP C40-4D-SD46-SP14
46mm 4D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
Industrial-Grade 46mm Large Diameter Boring Specialist
The BEYOND SP C40-4D-SD46-SP14 is a professional indexable insert drill engineered for extreme stability in deep hole boring. With a 46mm cutting diameter and a 4D depth ratio (184mm reach), this tool is the primary choice for blind hole machining. Featuring internal cooling and a high-efficiency spiral flute, it ensures rapid chip evacuation and superior surface finish on CNC lathes. This rapid drill is optimized for high-torque operations in steel, alloy, and cast iron.
Decoding the Model: SP C40-4D-SD46-SP14
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 46.0 mm | 1.811" |
| Shank Diameter (C) | 40.0 mm | 1.575" |
| Max Drilling Depth (4D) | 184.0 mm | 7.244" |
| Equivalent Model | SP-C1.50-4D-SD1.811-SP14 | |
20CrMnTi Alloy & High-Efficiency Spiral Flute
Superior Tool Body Material: This indexable drill body is forged from 20CrMnTi high-strength alloy steel. The surface is vacuum-quenched to reach HRC 50-55, providing incredible wear resistance and preventing tool deflection during large diameter drilling. The shock-resistant core is perfect for handling interrupted cuts in heavy-duty machining.
Optimized Spiral Flute (U-Groove): The specialized U-groove geometry features wide chip pockets. Combined with dual internal cooling holes, it allows high-pressure coolant to flush metal chips out of 184mm deep bores instantly, preventing chip packing and protecting the carbide inserts from heat failure during blind hole machining.
Recommended Cutting Parameters (46mm 4D)
Suggested for Carbon Steel (HB < 250). Adjust based on machine rigidity:
- Cutting Speed (Vc): 100 - 160 m/min
- Feed Rate (f): 0.08 - 0.18 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 46}$$
- Coolant: High-pressure internal cooling (Center water) is mandatory for 4D reach.
Looking for a compatible heavy-duty holder?
SHOP COMPATIBLE C40 TOOL HOLDERSVerified Customer Reviews
"Incredible Rigidity"
"I was worried about a 46mm drill at 4D, but the BEYOND body is rock solid. No wandering."
- Mark T. (Australia)
"Efficient Chip Removal"
"Internal cooling works perfectly. Even at full depth, it flushes chips out with no packing."
- Pierre L. (France)
"Top quality 20CrMnTi steel. Fast delivery to Canada."
- Steven W. (Canada)
"Perfect for blind holes. Square inserts leave a very clean bottom."
- Ahmed K. (UAE)
"Great value for money. Better performance than my expensive local brands."
- Thomas R. (Germany)
SP Series: Advantages & Considerations
- Uses 4-edge SPMG square inserts for maximum economy per edge.
- Exceptional stability and verticality for Blind Hole Machining.
- Thicker tool core provides higher rigidity for deep 4D reach.
- Higher power requirement compared to trigon (WC) drills.
- Requires high-pressure coolant pump for efficient deep hole evacuation.
Technical Q&A
Q: Why is SP better for blind holes?
A: SP square inserts provide a flatter hole bottom profile and the tool body has a thicker core, providing maximum rigidity at 4D depth compared to WC drills.
Q: Does it come with inserts?
A: No, this is for the tool body only. It is compatible with SPMG140512 inserts.
Q: What is the benefit of the Side-Lock (C40) shank?
A: The 40mm straight shank allows for massive clamping force in side-lock holders, preventing tool rotation under high torque.
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.