BEYOND WC25-4D-SD19.5-WC03 U-Drill | 19.5mm Indexable Insert Drill (4D Depth)
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BEYOND WC25-4D-SD19.5-WC03
Professional 4D Indexable U-Drill | 19.5mm High-Precision CNC Tooling
Efficient 19.5mm Indexable Holemaking
The BEYOND WC25-4D-SD19.5-WC03 is a high-rigidity indexable insert drill engineered for rapid metal removal in modern CNC machining. Featuring a 19.5mm cutting diameter and a 4D depth-to-diameter ratio, this tool is the definitive choice for high-speed internal cooling drilling. It is optimized for processing carbon steel, alloy steel, and stainless steel with maximum stability and exceptional chip evacuation.
Model Code Specification
Technical Data & Metric/Imperial Comparison
| Feature | Metric Model (mm) | Imperial Equivalent (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 19.5 mm | 0.7677" |
| Shank Diameter | 25.0 mm | 0.984" |
| Max Drilling Depth (4D) | 78.0 mm | 3.070" |
Recommended Cutting Parameters
Optimize your metal drilling results 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 cooling is mandatory for 19.5mm diameters to ensure effective chip evacuation and heat dissipation.
Material Integrity & Advanced Flute Geometry
Crafted from high-performance alloy steel with specialized vacuum quenching, this WC03 insert holder is built to withstand extreme centrifugal forces. The large-capacity spiral flute is designed for "forced" chip removal, significantly reducing the risk of chip-packing in 19.5mm deep hole drilling. This indexable tool body features a nickel-plated surface to minimize friction and prevent chip welding during high-speed feed cycles.
WC U-Drill: Advantages & Considerations
- Uses WCMX / WCMT inserts with 3 usable cutting edges (High cost-efficiency).
- Stable performance on uneven or sloped entry surfaces.
- Lower cutting resistance compared to SP series drills.
- Requires higher spindle power than standard twist drills.
- Surface finish may requires a finishing pass for precision H7 bores.
Frequently Asked Questions
A: Yes, it is ideal for both through-holes and blind holes in CNC milling and lathe applications.
A: Yes, the 19.5mm U-drill body comes with the correct Torx wrench and insert screws.
Global Customer Trust
"Incredible Stability" - Hans G. (Germany)
The 4D length works perfectly on our CNC lathe for 4140 steel.
"Best value drill" - Mark T. (USA)
Switched from a name brand to BEYOND. No difference in tool life!
"Fast shipping" - Kenji S. (Japan)
High quality nickel plating. Chips flow very smoothly.
"Highly Recommend" - Liam W. (Australia)
Perfect 19.5mm hole diameter. Very consistent results.
"Top Tier Body" - Luca R. (Italy)
The coolant holes are aligned perfectly. Great finish.
Pro-Tip: Choosing Drill Depth (2D to 5D)
Selecting the right L/D ratio is critical for CNC tooling success:
- 2D/3D: Maximum rigidity; best for shallow holes and high-feed roughing.
- 4D (This Model): The balanced universal standard for industrial 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.