BEYOND WC40-2D-SD51-WC08 Indexable U-Drill | 51mm Large Diameter CNC Drill Body
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BEYOND WC40-2D-SD51-WC08
Professional 51mm 2D Indexable U-Drill | Industrial CNC Performance
High-Efficiency 51mm Indexable Metal Boring
The BEYOND WC40-2D-SD51-WC08 is a heavy-duty indexable insert drill engineered for massive material removal in CNC machining centers. As a specialized fast hole U-drill, it features a 51mm cutting diameter with a 2D depth ratio. This tool is optimized for internal cooling drilling in carbon steel, alloy steel, and stainless steel, ensuring maximum productivity for large diameter boring projects. Made in China with premium industrial standards.
Model Code Specification Breakdown
Technical Data & Units Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 51.0 mm | 2.008" |
| Shank Diameter | 40.0 mm | 1.575" |
| Max Drilling Depth (2D) | 102.0 mm | 4.015" |
| Product Model | WC40-2D-SD51 | WC1.57-2D-SD2.00 |
Material Integrity & Optimized Flute Design
Hardened Body Material: Forged from high-performance quenched alloy steel (20CrMnTi), this 51mm U-drill body is treated for maximum surface hardness. It resists vibration and withstands the high cutting forces required for large diameter metal boring.
Optimized Chip-Evacuation Slots: The spiral flute geometry and wide chip-breaker slots are designed to prevent chip packing. When combined with the internal cooling ports, metal chips are flushed out instantly, maintaining a smooth bore and extending the life of your CNC lathe tool.
Recommended Cutting Parameters
Optimize your CNC hole making efficiency with these baseline settings for the 51mm drill:
- Cutting Speed (Vc): 100 - 180 m/min (Depending on material hardness).
- Feed Rate (f): 0.08 - 0.18 mm/rev.
- Rotation Speed (N): Calculated via $$N = \frac{Vc \times 1000}{\pi \times 51}$$
- Coolant Strategy: High-pressure internal cooling is mandatory for 51mm bores.
WC Type U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (Cost-effective).
- Exceptional stability on uneven or slanted entry surfaces.
- Reduced cutting torque compared to square insert drills.
- Requires high spindle power (kW) for 51mm diameters.
- Standard hole tolerance is roughly +0.10mm to +0.20mm.
Verified Global Customer Feedback
"Solid and Rigid"
Dieter H. (Germany)
"Perfect 51mm Holes"
Mark S. (USA)
"Fast Chip Flow"
Hiroshi Y. (Japan)
"Great for Alloy Steel"
Luca B. (Italy)
"Consistent BEYOND Quality"
Andrew P. (UK)
Frequently Asked Questions
Q: Does this drill body fit other brands of WC08 inserts?
A: Yes, it is manufactured to standard ISO dimensions and is compatible with any standard WCMX/WCMT 0804 inserts.
Q: Can I use this for blind holes?
A: Yes. The WC U-drill provides a relatively flat bottom, making it excellent for blind hole boring.
Q: What is the benefit of the 2D length?
A: The 2D (102mm) length offers maximum tool rigidity, allowing for faster feed rates and better accuracy on shorter holes.
Pro-Tip: 2D-5D Drilling Logic
Choosing the right depth is vital for CNC performance. 2D drills (like this SD51 model) provide the highest stability and are best for roughing. 3D to 5D drills allow for deep hole reach but require much higher coolant pressure and more conservative feed rates to avoid vibration and chip clogging.
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.