BEYOND SP C40-5D-SD42-SP14 Indexable U-Drill | 42mm CNC Deep Hole Drill Body
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BEYOND SP C40-5D-SD42-SP14
Professional 42mm 5D Deep Hole U-Drill | High-Rigidity CNC Indexable Boring Body
Industrial-Grade 42mm Deep Hole Machining
The BEYOND SP C40-5D-SD42-SP14 is a high-performance indexable insert drill engineered for large-diameter metal removal. With a 42mm cutting diameter and a massive 5D depth-to-diameter ratio, this fast hole U-drill is the ultimate solution for deep hole boring in heavy industrial workpieces. Optimized for CNC lathe metal boring, it features advanced internal cooling to manage heat during high-speed drilling of carbon steel, alloy, and stainless steel.
Technical Model Identification Guide
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drill Diameter (SD) | 42.0 mm | 1.653" |
| Shank Diameter (C) | 40.0 mm | 1.574" |
| Max Drilling Depth (5D) | 210.0 mm | 8.267" |
| Compatible Inserts | SPMG140508 | SPMG 4.53 |
Premium 20CrMnTi Alloy & Advanced Spiral Flute
Durable Tool Body Material: This indexable drill body is forged from 20CrMnTi high-strength alloy steel. The body is vacuum-quenched to achieve a high surface hardness while maintaining a flexible, shock-resistant core, allowing it to withstand the extreme torque of shallow hole drilling and deep 210mm penetration.
Optimized Spiral Flute (U-Groove): The spiral flute geometry is extra-wide to ensure smooth chip evacuation for 42mm bores. Combined with dual internal cooling holes, it allows high-pressure coolant to flush chips instantly, protecting your SPMG14 carbide inserts from re-cutting and heat-related failure.
Recommended Cutting Parameters (5D 42mm)
Baseline settings for optimal CNC performance:
- Cutting Speed (Vc): 80 - 160 m/min (Material dependent).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 42}$$
- Requirement: High-pressure internal cooling (Min 1.5 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.
- Excellent wall finish in large-diameter metal boring.
- Requires high spindle power due to square insert resistance.
- Coolant volume is critical to flush 42mm diameter chips.
Verified Customer Feedback
"Solid and Reliable"
"Drilling 42mm in structural steel plate. The 5D reach is perfectly stable. No vibration."
- Robert H. (USA)"Best value for money"
"Cheaper than the big brands but performance is identical. We run these on our DMG Mori."
- Klaus S. (Germany)"Perfect chip clearance"
"The spiral flute is deep enough that chips never jam. Internal cooling is very strong."
- Kenji T. (Japan)"Impressive longevity"
- Luca B. (Italy)
"Fast shipping, great tool"
- Pierre R. (France)
Frequently Asked Questions
Q: What is the benefit of the C40 shank?
A: The 40mm Side-Lock (Weldon) shank provides the massive clamping surface needed to prevent tool slippage under the high torque of a 42mm cut.
Q: Should I use a pilot hole for 5D drilling?
A: For maximum precision in 5D depths, we recommend starting with a 1D or 2D U-drill for the first 20-30mm to ensure the 5D follows a straight path.
Q: Does this include the screws and wrench?
A: Yes, all BEYOND U-drill bodies include the insert mounting screws and the appropriate flag-style wrench.
Technical Tip: WC vs. SP U-Drills
WC Series (Trigon): Best for general-purpose drilling on machines with lower spindle power. Lower cost per edge but less rigidity for deep holes.
SP Series (Square): The professional choice for Deep Hole (5D) drilling. The SPMG square insert provides superior core strength and a balanced cutting force, resulting in straighter holes and better dimensional stability in demanding CNC machining environments.
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.