BEYOND WC40-4D-SD42-WC08 U-Drill | 42mm Indexable Insert Drill (4D Depth)
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BEYOND WC40-4D-SD42-WC08
Heavy-Duty 4D Indexable U-Drill | 42mm Large Hole CNC Machining
Industrial-Grade 42mm Indexable Drill
The BEYOND WC40-4D-SD42-WC08 is a robust indexable insert drill engineered for precision hole making. Featuring a 42mm cutting diameter and a 4D depth-to-diameter ratio, this tool is the definitive choice for high-speed internal cooling drilling. It provides exceptional stability and superior chip evacuation in carbon steel, alloy steel, and cast iron during heavy-duty CNC machining.
Model Code Explained
Technical Data & Metric/Imperial Comparison
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 42.0 mm | 1.654" |
| Shank Diameter | 40.0 mm | 1.575" |
| Max Drilling Depth | 168.0 mm | 6.614" |
Recommended Cutting Parameters
Optimize your CNC lathe and milling machine performance for the WC40-4D-SD42-WC08:
- Cutting Speed (Vc): 100 - 150 m/min (Depending on material hardness).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Coolant Strategy: High-pressure internal coolant is mandatory for a 42mm diameter to flush large chips effectively and ensure tool longevity.
Advanced Material & Chip Groove Design
Constructed from high-performance alloy steel with specialized anti-vibration quenching, this WC08 insert holder ensures maximum rigidity. The spiral flute geometry is extra-wide to accommodate the high volume of material removed in 42mm deep hole drilling. The nickel-plated body minimizes friction and prevents chip welding, extending tool life significantly.
WC Series U-Drill: Pros & Cons
- Uses WCMX / WCMT inserts with 4 cutting edges (Cost-effective).
- Excellent performance in large-diameter drilling with stable chip breaking.
- Suitable for center-offset drilling on lathes.
- Requires high spindle power and torque.
- Coolant pressure must be maintained for vertical drilling.
Pro-Tip: Depth Selection (2D vs 5D)
The L/D ratio is critical for CNC tool stability:
- 2D/3D: Highest rigidity for fast cycle times on shallow holes.
- 4D (This Model): The sweet spot for heavy-duty drilling, balancing depth and tool deflection.
- 5D: Specialized for deep cavities; requires extremely high coolant pressure and lower feed rates.
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.