BEYOND SP C40-5D-SD48-SP14 Indexable U-Drill | 48mm Large Diameter CNC Deep Hole Drill
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BEYOND SP C40-5D-SD48-SP14
Heavy-Duty 48mm 5D Deep Hole U-Drill | Industrial CNC Indexable Boring Body
Superior 48mm Deep Hole Machining Capability
The BEYOND SP C40-5D-SD48-SP14 is a professional indexable insert drill engineered for large-diameter, high-volume material removal. Featuring a 48mm cutting diameter and an impressive 5D depth ratio, this fast hole U-drill is the ultimate solution for deep hole boring in massive workpieces. Designed for CNC lathe metal boring, it utilizes optimized internal cooling to handle extreme thermal loads during high-speed drilling of carbon steel, alloy, and stainless steel.
Technical Model Identification
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 48.0 mm | 1.889" |
| Shank Diameter | 40.0 mm | 1.574" |
| Max Drilling Depth (5D) | 240.0 mm | 9.448" |
| Product Model | SP C40-5D-SD48 | SP1.57-5D-SD1.89 |
High-Rigidity 20CrMnTi Alloy & Advanced Spiral Flute
Industrial-Grade Body Material: Deep hole drilling with a 48mm diameter generates immense torque. This indexable drill body is forged from 20CrMnTi high-strength alloy steel. The body is vacuum-quenched to achieve high surface hardness with a flexible core, ensuring it withstands shallow hole drilling and deep 240mm penetration without catastrophic failure.
Large-Capacity Spiral Flute (U-Groove): The spiral flute geometry is extra-wide to accommodate the massive chip load of a 48mm head. Paired with internal cooling holes, it ensures that chips are flushed from the bottom of the cavity instantly, protecting the SPMG14 carbide inserts from re-cutting and heat buildup.
Recommended Cutting Parameters (5D 48mm)
Optimize your CNC machining with these baseline settings:
- Cutting Speed (Vc): 80 - 150 m/min (Material dependent).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 48}$$
- Requirement: High-pressure internal cooling (Min 2.0 MPa) is essential for 5D depth.
SP Type U-Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 usable cutting edges (most cost-effective).
- Superior verticality and straightness in deep 5D holes.
- Better hole wall finish than WC-type drills in large diameters.
- Higher cutting force; requires a machine with high spindle power.
- Coolant volume is critical to flush large 48mm chips.
Verified Customer Feedback
"Incredible Stability"
"Drilling 48mm through thick plate steel. This tool is a tank. Very straight holes at full 5D depth."
- Robert H. (USA)"Professional Gear"
"BEYOND tool bodies are significantly cheaper than big brands but the quality is 1:1. Highly recommended for CNC shops."
- Markus G. (Germany)"Perfect chip flow"
"The internal coolant holes are massive. Chips clear instantly. Very fast delivery to Japan."
- Kenji T. (Japan)"Heavy-duty build"
- Luca B. (Italy)
"Great quality body"
- Pierre R. (France)
Frequently Asked Questions
Q: Why is the shank called C40?
A: C40 refers to the 40mm Side-Lock (Weldon) shank style, which provides the high clamping force necessary for a 48mm diameter cut.
Q: Do I need a pilot hole for 5D drilling?
A: For large diameters like 48mm, starting with a 1D or 2D U-drill for the first 30mm significantly improves the hole verticality for the 5D follow-up.
Q: Can this drill handle uneven surfaces?
A: Yes, SP drills are excellent for angled entries, but we recommend reducing the feed by 50% until the tool is fully engaged.
Deep Hole Pro Tip: 2D vs. 5D
2D Drills: Maximum rigidity for roughing. Best for high-feed rates and short depths.
5D Drills: Built for reach. Due to the 240mm length of this body, it is more susceptible to lateral forces. Always ensure your workpiece is clamped rigidly and your spindle is calibrated to prevent tool deflection.
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.