BEYOND SP C32-5D-SD28-SP09 Indexable U-Drill | 28mm 5D CNC Deep Hole Drill Body
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BEYOND SP C32-5D-SD28-SP09
28mm 5D Indexable U-Drill | High-Rigidity CNC Blind Hole Specialist
Industrial-Grade 28mm Deep Hole Boring
The BEYOND SP C32-5D-SD28-SP09 is a high-performance indexable insert drill engineered for precision metal removal. With a 28mm cutting diameter and a massive 5D depth-to-diameter ratio, this fast hole U-drill is the ultimate tool for deep hole boring. Designed specifically for CNC lathe metal boring, it excels in creating flat-bottom blind holes with its optimized internal cooling system.
Model Identification Guide
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 28.0 mm | 1.102" |
| Shank Diameter (C) | 32.0 mm | 1.259" |
| Max Drilling Depth (5D) | 140.0 mm | 5.511" |
| Compatible Inserts | SPMG090408 | SPMG 332 Ref. |
20CrMnTi Alloy & Advanced 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 shallow hole drilling or deep boring.
Optimized U-Groove Flute: The spiral flute geometry is precision-engineered with extra-large chip slots. Paired with dual internal cooling holes, it allows high-pressure coolant to flush metal chips out of the hole instantly, protecting your carbide inserts from chip re-cutting.
Recommended Cutting Parameters (5D 28mm)
Suggested for Carbon Steel (HB < 250). Adjust based on rigidity:
- Cutting Speed (Vc): 120 - 170 m/min
- Feed Rate (f): 0.06 - 0.12 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 28}$$
- Coolant Requirement: High-pressure internal cooling is mandatory for 5D depth.
SP Series U-Drill: Advantages & Considerations
- Uses 4-edge SPMG square inserts (High economic efficiency).
- Exceptional stability and verticality for 140mm deep holes.
- Excellent for blind hole machining with flatter bottoms.
- Requires higher spindle power/torque for 5D reach.
- Sensitive to low-pressure coolant systems.
Verified Customer Feedback
"Solid Deep Hole Performance"
"Rigidity is incredible. No vibration even at 140mm depth. BEYOND is my go-to brand now."
- Robert H. (USA)"Perfect Blind Holes"
"Flat bottom finish is much better than my old WC drill. Perfect for my hydraulic manifold parts."
- Klaus M. (Germany)"Impressive quality"
- Kenji Y. (Japan)
"Fast delivery, great tool"
- Alessandro P. (Italy)
"Highly reliable for 24/7 CNC"
- Liam G. (UK)
Technical Support Q&A
Q: What is the benefit of the Side-Lock (C32) shank?
A: It provides a massive clamping surface to prevent the tool from spinning in the holder during high-torque 28mm cuts.
Q: Is a pilot hole required for 5D drilling?
A: For 5D (140mm), we highly recommend starting with a 1D or 2D short U-drill to guide the deep hole tool for maximum straightness.
Q: Can I use this for stainless steel?
A: Yes, with the correct coating on your SPMG09 inserts and proper internal cooling, it handles stainless steel exceptionally well.
Technical Tip: SP vs. WC U-Drills
SP Series (Square): The professional choice for Blind Hole (Blind Bores). The square insert geometry provides a flatter hole bottom. Superior rigidity for Deep Hole (5D) drilling.
WC Series (Trigon): Primarily used for Through Hole applications. WC inserts offer more cutting edges but the tool core is 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.