BEYOND WC20-4D-SD16-WC03 U-Drill | 16mm Indexable Insert Drill (4D Depth)
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BEYOND WC20-4D-SD16-WC03
High-Rigidity 4D Indexable U-Drill | 16mm Precision CNC Tooling
Rapid 16mm Indexable Holemaking
The BEYOND WC20-4D-SD16-WC03 is an industrial-grade indexable insert drill engineered for high-speed metal removal. With a 16mm 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 in carbon steel, alloy steel, and stainless steel, making it the perfect CNC machining tool for demanding production cycles.
Model Code Specification
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 16.0 mm | 0.629" |
| Shank Diameter | 20.0 mm | 0.787" |
| Max Drilling Depth (4D) | 64.0 mm | 2.519" |
Recommended Cutting Parameters
Maximize your metal holemaking efficiency with these baseline settings for the WC series rapid drill:
- Cutting Speed (Vc): 100 - 180 m/min (Material dependent).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Coolant Strategy: High-pressure internal coolant is mandatory for 16mm diameters to ensure effective chip evacuation and heat dissipation.
Premium Material & Optimized Spiral Flute
Crafted from high-performance quenched alloy steel, this WC03 insert holder is built to withstand extreme centrifugal forces. The wide spiral flute geometry is precision-machined for "forced" chip removal, significantly reducing the risk of chip-packing in 16mm deep hole drilling. The nickel-plated body ensures corrosion resistance and smooth chip flow during high-speed feed cycles.
WC U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (High economy).
- Stable entry even on uneven or curved surfaces.
- Lower cutting resistance compared to SP series drills.
- Requires higher spindle power than standard twist drills.
- Final tolerance may require secondary finishing for H7 precision bores.
Verified Customer Trust
"Top Tier Stability" - Hans M. (Germany)
The 4D length works flawlessly on my CNC lathe for alloy steel.
"Best value drill" - Mark T. (USA)
Switched from a name brand to BEYOND. No difference in performance!
"Fast shipping" - Kenji S. (Japan)
High quality nickel plating. Chips flow very smoothly.
"Highly Recommend" - Liam W. (Australia)
Perfect 16mm hole diameter. Very consistent results.
"Top Tier Body" - Luca R. (Italy)
The coolant holes are aligned perfectly. Great finish.
Frequently Asked Questions
A: No, this is the 16mm U-drill body only. It includes the insert screws and the correct Torx wrench.
A: This is a 4D model, meaning it can drill up to 4x its diameter (64mm depth).
A: Absolutely, it is designed for both CNC lathes (static or live tools) and machining centers.
Pro-Tip: Choosing Drill Depth (2D to 5D)
The L/D ratio is critical for efficient holemaking success:
- 2D/3D: Maximum rigidity; best for shallow holes and high-feed roughing.
- 4D (This Model): The industrial balanced standard for deep-hole machining.
- 5D: Specialized long reach drill. Requires extreme coolant pressure to maintain hole straightness.
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.