BEYOND SP C25-5D-SD14-SP05 Indexable U-Drill Body | 14mm 5D CNC Deep Hole Drill
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BEYOND SP C25-5D-SD14-SP05
14mm 5D Indexable U-Drill | Precision Blind Hole Boring Specialist
Industrial 14mm Deep Hole Boring Specialist
The BEYOND SP C25-5D-SD14-SP05 is a professional indexable insert drill engineered for extreme stability in deep hole boring. With a 14mm cutting diameter and a 5D depth ratio (70mm 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 designed for high-feed operations in steel, alloy, and cast iron.
Decoding the Model: SP C25-5D-SD14-SP05
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 14.0 mm | 0.551" |
| Shank Diameter (C) | 25.0 mm | 0.984" |
| Max Drilling Depth (5D) | 70.0 mm | 2.756" |
| Imperial Model Equivalent | SP-C1.0-5D-SD0.551-SP05 | |
Premium 20CrMnTi Alloy & Advanced Spiral Flute
Superior Material Composition: This U-drill CNC tool body is manufactured from 20CrMnTi alloy steel. Through vacuum quenching and specialized tempering, the body reaches a surface hardness of HRC 50-55. This ensures the indexable drill resists deformation under high-pressure deep hole drilling while maintaining a shock-absorbing core for interrupted cuts.
High-Performance U-Groove: The spiral flute is precision-ground with a wide-opening U-shape. This geometry, coupled with internal coolant holes, prevents chip clogging—a common failure in 5D deep hole boring. By optimizing the chip evacuation path, it significantly extends the life of your carbide inserts.
Recommended Cutting Parameters (14mm 5D)
Optimized for Steel (HB < 250). Please adjust based on your CNC machine's rigidity:
- Cutting Speed (Vc): 120 - 180 m/min
- Feed Rate (f): 0.05 - 0.10 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 14}$$
- Coolant Requirement: High-pressure internal cooling (Center water) is 100% required for 5D depth.
Beyond SP Series: Performance Analysis
- 4-edge SPMG square inserts offer superior economy (4 usable corners).
- Optimized for Blind Hole Machining (flatter hole bottom).
- Incredible body rigidity for high-precision 5D deep hole applications.
- Higher cutting resistance than WC drills; requires stable spindle power.
- Must use high-pressure coolant to avoid chip accumulation at 70mm depth.
Need a compatible holder for the 25mm shank?
VIEW COMPATIBLE C25 SIDE-LOCK HOLDERSWhat Our Global Clients Say
"Top Tier for Blind Holes"
"I've switched all my blind hole boring to BEYOND SP drills. The flatness at the bottom is perfect and the 5D reach is rock solid."
- Mark R. (USA)
"Strong Tool Body"
"The alloy steel body is clearly heat-treated well. No vibration even at high feeds."
- Hans S. (Germany)
"Excellent price-to-performance ratio. Best 14mm U-drill I've found."
- Kenji T. (Japan)
"Internal cooling works great. Chips come out cleanly."
- Felipe M. (Brazil)
"Great quality from China. Shipping was fast."
- David L. (UK)
Product FAQ
Q: Does this include the SPMG inserts?
A: No, this is the tool body only. You will need to purchase SPMG050204 inserts separately.
Q: Can I use this for through holes?
A: While the SP series is optimized for blind hole machining, it can perform through-holes. However, for exclusive through-hole tasks, we recommend our WC series.
Q: What is the maximum drilling depth for this 14mm model?
A: As a 5D model, it has an effective drilling reach of 70mm.
Machinist Tip: Choosing the Right U-Drill
SP Series (Square Inserts): The best choice for Blind Holes. Square inserts (SPMG) provide a flatter hole bottom and have a thicker drill core for maximum rigidity in deep boring (5D).
WC Series (Trigon Inserts): Specifically designed for Through Holes. The 3-sided inserts (WCMX/WCMT) reduce cutting force, but the body core is thinner than the SP series.
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.