BEYOND SP C32-5D-SD30.5-SP09 Indexable U-Drill | 30.5mm 5D CNC Deep Hole Drill Body
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BEYOND SP C32-5D-SD30.5-SP09
30.5mm 5D Indexable U-Drill | Professional Blind Hole CNC Boring Body
High-Performance 30.5mm Deep Hole Drilling
The BEYOND SP C32-5D-SD30.5-SP09 is a premium indexable insert drill engineered for heavy-duty metal removal. With a 30.5mm cutting diameter and a massive 5D depth ratio, this fast hole U-drill is specifically optimized for blind hole boring on CNC lathes. Its internal cooling technology ensures maximum chip evacuation and tool life during high-speed drilling in carbon steel, alloy steel, and stainless steel.
Model Breakdown (Specifications)
Metric & Imperial Sizing Reference
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 30.5 mm | ~1.2007" |
| Shank Diameter (C) | 32.0 mm | 1.259" |
| Max Drilling Depth (5D) | 152.5 mm | 6.004" |
| Overall Length (L) | 228 mm | 8.976" |
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 achieve HRC 50-55, providing immense wear resistance while the core remains tough to withstand high torque during interrupted cuts or deep penetration.
Optimized U-Groove Flute: The spiral flute geometry is designed with extra-large chip slots. This ensures that even at 152.5mm depths, metal chips are effectively flushed out by the internal cooling holes, preventing chip packing and protecting the carbide inserts from heat damage.
Recommended Cutting Parameters (30.5mm 5D)
Suggested for Carbon Steel (HB < 250). Adjust based on CNC rigidity:
- Cutting Speed (Vc): 110 - 155 m/min
- Feed Rate (f): 0.07 - 0.14 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 30.5}$$
- Coolant Pressure: High-pressure internal cooling (Min 1.5 MPa) is mandatory for 5D.
SP Type U-Drill: Advantages & Considerations
- Uses 4-edge SPMG square inserts (Cost-effective).
- Exceptional stability for Blind Hole Machining.
- Higher core rigidity compared to WC trigon models.
- Higher power requirement for large 30.5mm diameters.
- Slower entry speeds required on uneven surfaces.
Verified Customer Feedback
"Ideal for Blind Bores"
"Switched from WC to this SP drill for blind holes. The bottom finish is noticeably flatter and much more stable at 5D depth."
- Robert H. (USA)"Rugged Body"
"The 20CrMnTi material is no joke. Survived a small operator error with zero damage. Great value."
- Klaus W. (Germany)"Efficient Chip Flow"
- Hiroshi T. (Japan)
"Best deep hole drill for the price"
- Alessandro M. (Italy)
"Smooth drilling in 4140 alloy"
- Steve L. (Canada)
Technical Q&A
Q: Why use the SP series for blind holes?
A: SP square inserts provide a flatter hole bottom and higher rigidity, which is crucial when you aren't exiting the material.
Q: What is the benefit of the C32 shank?
A: The 32mm straight shank allows for massive clamping force in side-lock holders, preventing the tool from rotating under high torque.
Q: Can I use this for shallow hole drilling too?
A: Yes, while rated for 5D, it works perfectly for 2D or 3D depths as well.
Technical 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 5D depths.
WC Series (Trigon): Primarily used for Through Hole applications. Trigon inserts offer more edges but the body is slightly less rigid at extreme depth-to-diameter ratios.
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.