BEYOND SP C40-5D-SD43-SP14 Indexable U-Drill | 43mm Deep Hole CNC Drill Body
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BEYOND SP C40-5D-SD43-SP14
Precision 43mm 5D Deep Hole U-Drill | High-Stability CNC Indexable Drill Body
Industrial-Grade 43mm Deep Hole Specialist
The BEYOND SP C40-5D-SD43-SP14 is a professional indexable insert drill designed for high-efficiency material removal. With a 43mm cutting diameter and a powerful 5D depth ratio, this fast hole U-drill is engineered for deep hole boring in tough alloys and structural steels. Its internal cooling system ensures superior chip evacuation and thermal control during continuous high-speed drilling on CNC lathes and machining centers.
Model Code Explanation
Technical Specifications & Unit Comparison
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter | 43.0 mm | 1.692" |
| Shank Diameter | 40.0 mm | 1.574" |
| Drilling Depth (5D) | 215.0 mm | 8.464" |
| Total Body Length | ~315.0 mm | 12.401" |
20CrMnTi Alloy & High-Efficiency Spiral Flute
Superior Tool Material: This U-drill body is manufactured from premium 20CrMnTi alloy steel. Through advanced vacuum quenching and tempering, the tool achieves a surface hardness that resists wear while maintaining the core toughness required for large diameter boring. This prevents tool snap under high-torque conditions.
Optimized Chip Flute: The spiral flute geometry is precision-ground to maximize chip space. Paired with dual internal coolant channels, it effectively flushes chips out of the 215mm deep hole, ensuring a smooth surface finish and preventing chip welding on the SPMG14 carbide inserts.
Recommended Cutting Parameters (43mm 5D)
Baseline recommendations for standard Carbon Steel (HRC < 30):
- Cutting Speed (Vc): 100 - 160 m/min.
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Formula for RPM (N): $$N = \frac{Vc \times 1000}{\pi \times 43}$$
- Internal Coolant: Minimum 1.5 - 2.0 MPa pressure required for 5D depth.
SP Series U-Drill Analysis
- Uses SPMG square inserts with 4 cutting edges (lower cost per hole).
- Exceptional stability and verticality for deep 5D holes.
- Stronger tool core compared to WC drills.
- Requires higher spindle power for 43mm diameter.
- Not recommended for very small diameter drilling (< 14mm).
Customer Feedback
"Incredible Reach"
"Drilling 200mm deep with the 43mm U-drill. It stayed perfectly centered. Very rigid body."
- Brian S. (Australia)"Best value for money"
"Quality matches European brands but at half the price. Highly recommend BEYOND tools."
- Hans W. (Germany)"Efficient chip removal"
"Internal coolant is powerful. No chip packing at the bottom of the hole."
- Tanaka K. (Japan)"Solid boring tool"
- Carlos M. (Brazil)
"Great for CNC lathes"
- Liam G. (UK)
Technical Q&A
Q: Can I use this on a manual drill press?
A: No. A 43mm 5D U-drill requires the rigidity and high-pressure coolant only found on CNC machines.
Q: Does this come with the SPMG14 inserts?
A: No, this is the tool holder body only. Inserts must be purchased separately.
Q: Why use a C40 shank for a 43mm drill?
A: The 40mm shank provides maximum clamping surface to handle the extreme torque of a 43mm cut without slipping.
Tooling Tip: SP vs. WC U-Drills
WC Series (Trigon): Best for general purpose drilling and lower spindle power machines. Offers good cost efficiency but lower core rigidity.
SP Series (Square): The professional choice for Deep Hole (5D) drilling. The square SPMG insert layout provides better balance and a thicker tool core, resulting in significantly straighter holes 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.