BEYOND SP C32-5D-SD38.5-SP11 Indexable U-Drill | 38.5mm CNC Deep Hole Drill Body
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BEYOND SP C32-5D-SD38.5-SP11
Precision 38.5mm 5D Deep Hole U-Drill | High-Rigidity CNC Indexable Boring Body
Industrial-Grade 38.5mm Deep Hole Specialist
The BEYOND SP C32-5D-SD38.5-SP11 is a high-efficiency indexable insert drill designed for professional metal removal. Featuring a 38.5mm cutting diameter and a powerful 5D depth ratio, this fast hole U-drill excels in deep hole boring for tough alloys and structural steels. Engineered for CNC lathe metal boring, its optimized internal cooling system ensures superior chip evacuation and thermal stability during high-speed drilling.
Model Code Specification
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 38.5 mm | 1.515" |
| Shank Diameter (C) | 32.0 mm | 1.259" |
| Drilling Depth (5D) | 192.5 mm | 7.578" |
| Insert Grade | SPMG110408 | SPMG 3.5(3)2 |
Premium 20CrMnTi Alloy & Optimized Spiral Flute
Superior Tool Body: Manufactured from high-quality 20CrMnTi alloy steel, this U-drill body undergoes vacuum quenching to ensure HRC 50-55 surface hardness. This prevents deformation during large diameter boring while providing the core toughness needed for intermittent cuts.
Efficient Chip Evacuation: The spiral flute (U-groove) is designed with an enlarged space for smooth chip flow. Combined with dual internal coolant channels, it effectively flushes metal chips out of the 192.5mm deep hole, reducing friction and extending the life of your carbide inserts.
Recommended Cutting Parameters (5D 38.5mm)
Standard values for Carbon Steel (HB180-220). Always use internal coolant:
- Cutting Speed (Vc): 100 - 150 m/min
- Feed Rate (f): 0.08 - 0.15 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 38.5}$$
- Coolant Pressure: Minimum 1.5 - 2.0 MPa for 5D depth.
SP Series U-Drill: Advantages & Considerations
- Uses 4-edge SPMG square inserts (Highly cost-effective).
- Superior hole straightness and verticality in 5D depths.
- Greater body rigidity compared to WC trigon types.
- Requires higher machine horsepower.
- Not suitable for machines with low coolant pressure.
Verified Customer Feedback
"Solid and Reliable"
"Drilling 38.5mm at 5D depth in structural steel. Stable and straight. BEYOND quality is impressive."
- Robert H. (USA)"Efficient chip flow"
"The spiral flute is deep enough that chips never jam. Excellent internal cooling."
- Hans M. (Germany)"Great for CNC lathes"
"Rigidity is key for 5D drilling, and this tool delivers. Will buy again."
- Kenji Y. (Japan)"Fast Shipping"
- Carlos R. (Brazil)
"Excellent value"
- Liam G. (UK)
Technical Q&A
Q: Can I use this for shallow hole drilling as well?
A: Absolutely. While designed for 5D depth, it is perfectly capable of shallow boring, offering maximum versatility.
Q: Does this include the SPMG11 inserts?
A: No, this is the tool body only. We recommend pairing it with BEYOND SPMG110408 inserts for best results.
Q: Is a pilot hole necessary for 38.5mm 5D?
A: For 5D depths, we recommend starting with a 1D or 2D U-drill to ensure the 5D follows a perfectly straight path.
Technical Tip: WC vs. SP U-Drills
WC Series (Trigon): Ideal for general purpose and low spindle power machines. Lower tool price but less rigid.
SP Series (Square): The professional choice for Deep Hole (5D) drilling. The SPMG square insert provides 4 cutting edges and a thicker tool core, ensuring straighter holes and better dimensional stability in heavy-duty CNC machining.
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.