BEYOND SP C40-5D-SD45-SP14 Indexable U-Drill | 45mm Large Diameter CNC Deep Hole Drill
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BEYOND SP C40-5D-SD45-SP14
Industrial 45mm 5D Deep Hole U-Drill | Professional CNC Indexable Boring Body
High-Performance 45mm Deep Hole Machining
The BEYOND SP C40-5D-SD45-SP14 is a professional-grade indexable insert drill engineered for large-diameter, high-volume material removal. Featuring a 45mm 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 in carbon steel, alloy, and stainless steel.
Technical Model Identification Guide
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 45.0 mm | 1.771" |
| Shank Diameter | 40.0 mm | 1.574" |
| Max Drilling Depth (5D) | 225.0 mm | 8.858" |
| Product Model | SP C40-5D-SD45 | SP1.57-5D-SD1.77 |
High-Rigidity 20CrMnTi Alloy & Advanced Spiral Flute
Industrial-Grade Body Material: Deep hole drilling with a 45mm 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 long-reach boring up to 225mm without catastrophic failure.
Large-Capacity Spiral Flute (U-Groove): The spiral flute geometry is extra-wide to accommodate the massive chip load of a 45mm 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 45mm)
Optimize your CNC machining with these baseline settings:
- Cutting Speed (Vc): 80 - 150 m/min (Standard Steel).
- Feed Rate (f): 0.08 - 0.14 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 45}$$
- Requirement: High-pressure internal cooling is mandatory for 5D depth to prevent chip packing.
SP Type U-Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 usable cutting edges (extremely cost-effective).
- Superior verticality and straightness in deep 5D holes.
- Better wall finish than WC-type drills in large diameters.
- High cutting force; requires a machine with high spindle power.
- Coolant volume is critical to flush large 45mm chips.
Verified Customer Feedback
"Workhorse Tool"
"Drilling 45mm holes in 4140 steel. Perfectly stable. The 5D reach is great for heavy boring."
- Jonathan R. (USA)"Top Tier Value"
"Equivalent to high-end brands. Very rigid body and excellent chip evacuation."
- Lukas H. (Germany)"Fast chip flow"
"No packing issues at 200mm depth with 20 bar coolant. Great tool."
- Yukihiro M. (Japan)"Solid build"
- Alessandro P. (Italy)
"Highly reliable"
- Francois L. (France)
Expert Drilling Q&A
Q: What is the benefit of the Side-Lock (C40) shank?
A: The C40 shank allows for massive clamping force, preventing the tool from rotating in the holder under the high torque of a 45mm cut.
Q: Do I need a pilot hole for 5D drilling?
A: For large diameters like 45mm, starting with a 1D or 2D U-drill for the first 30mm significantly improves the hole verticality for the 5D follow-up.
Q: Is this suitable for Stainless Steel?
A: Yes, provided you use the correct SPMG14 insert grade and ensure high-volume internal coolant to manage heat.
Technical Tip: WC vs. SP U-Drills
WC Series (Trigon): Best for general purpose and light-to-medium drilling. High cost-efficiency on smaller machines.
SP Series (Square): The industry standard for Deep Hole (5D) and large diameters. The square insert geometry provides superior balance and core strength, resulting in straighter holes and better dimensional tolerance 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.