BEYOND SP C40-5D-SD40-SP11 Indexable U-Drill | 40mm CNC Deep Hole Drill
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BEYOND SP C40-5D-SD40-SP11
High-Precision 40mm 5D Indexable U-Drill Body
Master Deep Hole CNC Machining
The BEYOND SP C40-5D-SD40-SP11 is a professional-grade indexable insert drill designed for extreme stability in deep hole boring. With a 40mm cutting diameter and a 5D depth ratio, this fast hole U-drill is engineered for high-efficiency metal removal on CNC lathes and machining centers. Whether you are working on shallow hole drilling or deep penetration, this tool provides the rigidity needed for high-speed drilling in carbon steel, alloy steel, and stainless steel.
What Does the Model Code Mean?
Every letter in our industrial U-drill code represents a technical specification:
Technical Data & Size Conversion
| Specification | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 40.0 mm | 1.575" |
| Shank Diameter (C) | 40.0 mm | 1.575" |
| Max Drilling Depth (5D) | 200.0 mm | 7.874" |
| Total Body Length | ~300.0 mm | 11.811" |
Material Science & Slot Design
Premium Tool Body Material: This drill is crafted from high-performance 20CrMnTi alloy steel. The indexable drill body undergoes vacuum quenching to ensure a high surface hardness of HRC 50-55, providing incredible wear resistance while the core remains tough to absorb vibration during heavy-duty machining.
Optimized Spiral Flute (U-Groove): The spiral flute geometry is precision-engineered to provide maximum chip clearance. For a 40mm diameter at 200mm depth, chip packing is a risk; however, our polished large-capacity flutes, combined with dual internal coolant holes, ensure chips are flushed out instantly, protecting both the tool and the workpiece.
Recommended Cutting Parameters
Baseline settings for 45# Steel (HB180-220). Adjust based on your specific material:
- Cutting Speed (Vc): 100 - 160 m/min
- Feed Rate (f): 0.08 - 0.15 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 40}$$
- Note: High-pressure internal cooling (Min 1.5 MPa) is mandatory for 5D depth.
SP Series U-Drill: The Professional Choice
- Uses SPMG square inserts: 4 usable cutting edges per insert (cost-effective).
- Superior hole verticality and straightness in deep 5D holes.
- Higher body rigidity compared to WC-type drills.
- Requires higher spindle power/torque for 40mm diameter.
- Insert cost per piece is higher than triangular (WC) inserts.
Global Verified Reviews
"Incredible Stability"
"I used this 40mm drill for 180mm depth in alloy steel. The hole was perfectly straight. Much better than my old WC drill."
- James M. (USA)
"Efficient"
"Top quality from China. Fast shipping to Germany. Works perfectly with BEYOND inserts."
- Klaus H. (Germany)
"Very solid tool body."
- Kenji T. (Japan)
"Best price for 5D reach."
- Ahmed R. (UAE)
Frequently Asked Questions
Q: Can I use this on a manual lathe?
A: It is not recommended. U-drills require high rigidity and continuous internal cooling, which manual machines typically lack.
Q: What is the benefit of the Side-Lock C40 shank?
A: The C40 shank provides the massive clamping surface needed to prevent tool slippage under the high torque of a 40mm cut.
Q: Is a pilot hole necessary?
A: For 5D drilling, we recommend starting with a short 2D U-drill for the first 10-20mm to ensure the 5D tool stays perfectly centered.
Quick Tip: WC vs. SP U-Drills
WC Series (Trigon): Best for general purpose and low spindle power machines. Lower insert price but less verticality.
SP Series (Square): The heavy-duty choice for Deep Hole (5D) and large diameters. The SPMG square insert offers 4 edges and superior hole finish, making it the standard for CNC boring in professional workshops.
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.