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.
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.