The BEYOND drill collection is a comprehensive catalog of indexable U-drill (spade drill / insert drill) bodies for production hole-making on CNC machining centers. Two ISO insert families cover the full material range: WC series uses 80° trigon inserts (WC03 / WC04 / WC05 / WC06 / WC08) for steel, alloy, and cast iron, while SP series uses 55° positive trigon inserts (SP05 / SP06 / SP07 / SP09) for steel, stainless, and aluminum. Both families accept any ISO 1832 standard insert from the global insert catalog, so you can substitute cross-brand equivalents from Korloy and Mitsubishi directly.

Four depth ratios (2D / 3D / 4D / 5D) cover shallow plate drilling to deep-hole work. All bodies use cylindrical C-shanks (C20 / C25 / C32 / C40 or WC20 / WC25 / WC32 / WC40) that fit standard CNC milling chucks, and feature through-body internal coolant for chip evacuation at deep ratios. This collection pairs naturally with the 12D Saber Tooth Drill for extra-deep hole work, the Milling Shank Series for cylindrical-shank indexable cutters, and the Rough & Fine Boring Series for internal diameter finishing. For broader tool holder selection, see the Tool Holder Guide.

2 Insert Family Comparison (WC vs SP)

WC and SP are both trigon insert families but serve different material ranges. Pick by workpiece material + insert geometry preference:

For material-based grade selection, see the insert-by-material pillar. For operation-based selection (roughing / finishing / high-feed), see the insert-by-operation pillar. Both families are interchangeable with the 8-brand global insert catalog.

4 Depth Ratio Reference

Depth ratio is the maximum drilling depth expressed as multiples of cutting diameter. Pick by hole depth requirement — deeper ratios need higher coolant pressure and more rigid setups:

For 6D-12D extra-deep hole work, see the 12D Saber Tooth Drill collection — it uses a sword-tooth insert geometry specifically designed for deep-hole rigidity.

Cutting Diameter + Shank Reference

BEYOND indexable U-drill bodies cover 13-60mm cutting diameter in 1mm increments, paired with cylindrical C-shanks (C20 / C25 / C32 / C40 or WC20 / WC25 / WC32 / WC40):

Internal Coolant Explanation

All BEYOND U-drill bodies feature through-body internal coolant with coolant channels running from the shank end through the drill body to the insert pocket. Coolant exits under high pressure at the cutting edge, evacuating chips from deep flutes and preventing chip packing that causes drill breakage. For 3D and deeper ratios, internal coolant is mandatory — dry drilling or flood coolant from the spindle nozzle is insufficient.

• 2D drilling — coolant pressure 7-15 bar (100-220 PSI) is sufficient for chip evacuation
• 3D drilling — 10-20 bar (150-290 PSI) recommended for stable chip flow
• 4D drilling — 15-30 bar (220-435 PSI) for high chip evacuation rate
• 5D drilling — 20-40 bar (290-580 PSI) for maximum chip clearance; consider peck-cycle for stainless

For spindle selection and coolant system sizing, see the Speeds & Feeds hub.

Internal Resources

FAQ — Indexable U-Drill Selection