BEYOND WC25-5D-SD20.5-WC03 U-Drill | 20.5mm Indexable Drill (5D Depth)
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BEYOND WC25-5D-SD20.5-WC03
High-Performance 5D Indexable U-Drill | Deep Hole CNC Machining Specialist
Advanced 20.5mm CNC Drilling Solution
The BEYOND WC25-5D-SD20.5-WC03 is a professional-grade indexable insert drill engineered for high-efficiency metal removal. With a 20.5mm cutting diameter and a 5D 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 structural rigidity during deep-hole CNC drilling.
Model Code Explained
Technical Data & Metric/Imperial Comparison
| Feature | Metric (mm) | Imperial (Inch Equivalent) |
|---|---|---|
| Cutting Diameter (SD) | 20.5 mm | 0.807" |
| Shank Diameter | 25.0 mm | 0.984" |
| Drilling Depth (5D) | 102.5 mm | 4.035" |
Recommended Cutting Parameters
Achieve optimal results for your 20.5mm indexable drill bit with these settings:
- Cutting Speed (Vc): 100 - 180 m/min (Adjust based on material type).
- Feed Rate (f): 0.05 - 0.12 mm/rev.
- Coolant Strategy: High-pressure internal coolant is mandatory for 5D depth to clear chips effectively and prevent tool failure.
Material Excellence & Spiral Flute Geometry
Constructed from high-strength alloy steel with specialized anti-vibration heat treatment, the BEYOND U-drill offers extreme durability. The spiral flute geometry is wide-designed for "forced" chip removal, which prevents chip-packing—the primary cause of tool failure in 20.5mm deep hole drilling. This WC03 insert holder is nickel-plated for superior corrosion resistance and enhanced tool life.
WC Series U-Drill: Pros & Cons
- Uses WCMX / WCMT inserts with 4 cutting edges (Cost-effective).
- Better stability on uneven or curved entry surfaces compared to SP drills.
- Superior chip breaking performance on carbon and alloy steels.
- Higher torque requirements than SP series drills.
- Requires precise spindle alignment for deep 5D precision.
Pro-Tip: Choosing Drill Depth (2D to 5D)
The L/D ratio determines stability and application range in CNC tooling:
- 2D/3D: Maximum rigidity. Best for high-speed shallow holes and maximum feed.
- 4D: The universal standard for general-purpose machining.
- 5D (This Model): Specialized deep-hole drill. It allows for deep penetration but requires high-pressure internal coolant to ensure straightness and tool longevity.
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.