BEYOND WC32-5D-SD25.5-WC05 U-Drill | 25.5mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD25-WC05 U-Drill | 25mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD24-WC04 U-Drill | 24mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD24.5-WC04 U-Drill | 24.5mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD23-WC04 U-Drill | 23mm Indexable Drill for WC04 Inserts
BEYOND WC25-5D-SD23.5-WC04 U-Drill | 23.5mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD22-WC04 U-Drill | 22mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD22.5-WC04 U-Drill | 22.5mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD21-WC04 U-Drill | 21mm Indexable Insert Drill (5D Depth)
BEYOND WC25-5D-SD21.5-WC04 U-Drill | 21.5mm Indexable Insert Drill
BEYOND WC25-5D-SD20.5-WC03 U-Drill | 20.5mm Indexable Drill (5D Depth)
BEYOND WC25-4D-SD22-WC04 U-Drill | 22mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD22.5-WC04 U-Drill | 22.5mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD21-WC04 U-Drill | 21mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD21.5-WC04 U-Drill | 21.5mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD20.5-WC03 U-Drill | 20.5mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD20-WC03 U-Drill | 20mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD19-WC03 U-Drill | 19mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD19.5-WC03 U-Drill | 19.5mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD18-WC03 U-Drill | 18mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD18.5-WC03 U-Drill | 18.5mm Indexable Insert Drill (4D Depth)
BEYOND WC25-4D-SD17.5-WC03 U-Drill | 17.5mm Indexable Insert Drill (4D Depth)
BEYOND WC20-4D-SD17-WC03 U-Drill | 17mm Indexable Insert Drill (4D Depth)
BEYOND WC20-4D-SD16-WC03 U-Drill | 16mm Indexable Insert Drill (4D Depth)
Quick Links — Jump to Related Tooling
12D deep drill, face mill, shanks, boring, holder guide & inserts:
BEYOND Indexable U-Drills | WC + SP Series | 2D-5D Depth
BEYOND indexable U-drill bodies to ISO 1832 standard. WC trigon + SP positive trigon insert families, 2D-5D depth ratio, cylindrical C20-C40 shank with internal coolant.
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:
| Family | Insert Class | IC Range | Insert Geometry | Cutting Edge | Best For |
|---|---|---|---|---|---|
| WC Series | WC03 / WC04 / WC05 / WC06 / WC08 | 3.97 - 8.0 mm | 80° trigon, negative rake | Strong, stable | Steel, alloy steel, cast iron at high MRR |
| SP Series | SP05 / SP06 / SP07 / SP09 | 5.0 - 9.0 mm | 55° positive trigon, positive rake | Sharp, low cutting force | Stainless steel, aluminum, low-carbon steel, thin plate |
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:
| Depth Ratio | Count | Max Hole Depth | Typical Application | Coolant Pressure |
|---|---|---|---|---|
| 2D | 140 | 2 × Ø | Shallow plate drilling, cross-hole, flat drilling | Standard (7-15 bar) |
| 3D | 131 | 3 × Ø | Standard drilling depth, general purpose, most common production | Standard-High (10-20 bar) |
| 4D | 140 | 4 × Ø | Deep drilling, automotive transmission, mold base | High (15-30 bar) |
| 5D | 123 | 5 × Ø | Deep hole, aerospace, long reach, requires rigid setup | Very High (20-40 bar) |
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):
| Cutting Ø | Available Shanks | Depth Ratios | Insert | Use Case |
|---|---|---|---|---|
| 13-17 mm | C20 / WC20 | 2D-5D | WC03 / SP05 | Small precision drilling, electronics, watch |
| 18-25 mm | C25 / WC25 / C32 / WC32 | 2D-5D | WC04-05 / SP06 | Standard small-medium drilling, most common production |
| 26-40 mm | C32 / WC32 | 2D-5D | WC06 / SP07 | Medium-large production drilling, automotive |
| 41-50 mm | C40 / WC40 | 2D-5D | WC08 / SP09 | Large drilling, mold, heavy equipment |
| 51-60 mm | C40 / WC40 | 2D-5D | WC08 / SP09 | Largest standard sizes, heavy industrial |
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
Jump to the right drilling + milling + boring + insert reference for your shop:
BEYOND Drilling Family
BEYOND Milling + Boring
BEYOND Tool Holder Family
Carbide Insert Pillars
Tool Holding + Accessories
Brand Inserts + Face Mill Hub
FAQ — Indexable U-Drill Selection
What is the difference between WC and SP insert series?
WC is an 80° trigon (negative rake) insert family with strong cutting edges for steel, alloy steel, and cast iron at high material removal rate. SP is a 55° positive trigon (positive rake) insert family with sharper cutting edges and lower cutting force, preferred for stainless steel, aluminum, low-carbon steel, and thin plate work. Both are indexable U-drill standards and follow ISO 1832 geometry. The choice depends on your workpiece material and insert geometry preference, not the machine.
What depth ratio should I choose (2D vs 3D vs 4D vs 5D)?
Depth ratio = maximum hole depth divided by drill diameter. Pick the smallest ratio that fits your deepest hole — deeper ratios need more rigid setups, higher coolant pressure, and have more chip evacuation risk. 2D is for shallow plate work. 3D is the everyday standard for most drilling. 4D is for deep production drilling like automotive transmission housings. 5D is for aerospace and long-reach work. For 6D-12D extra-deep hole, use the 12D Saber Tooth Drill which has a sword-tooth insert geometry designed specifically for deep-hole rigidity.
Do all BEYOND U-drill bodies have internal coolant?
Yes. All BEYOND U-drill bodies in this collection (2D-5D, all shank sizes) have through-body internal coolant channels that run from the shank end to the insert pocket. Coolant exits under high pressure at the cutting edge for chip evacuation. For 3D and deeper drilling, internal coolant is mandatory — flood coolant from the spindle nozzle is insufficient. Coolant pressure requirements scale with depth ratio: 7-15 bar for 2D, 15-30 bar for 4D, 20-40 bar for 5D.
Can I use Korloy or Mitsubishi WCGT / SPGT inserts in BEYOND drill bodies?
Yes. All BEYOND U-drill bodies follow ISO 1832 standard for WCGT (80° trigon) and SPGT (55° positive trigon) inserts. Cross-brand equivalents from Korloy, Mitsubishi, Sumitomo, Sandvik, and other major brands will fit the same pocket. The only check needed is IC size (3.97 / 4.76 / 5.56 / 6.35 / 8.0 mm for WC, 5.0 / 6.0 / 7.0 / 9.0 mm for SP) and matching insert thickness. For grade selection, see the 8-brand grade cross-reference.
How do I match shank size to drill body diameter?
General rule: shank diameter should be at least 70-80% of the cutting diameter for rigidity without over-stressing the spindle. For 13-17mm drills, use C20 / WC20 shank. For 18-25mm drills, use C25 / WC25 or C32 / WC32. For 26-40mm drills, use C32 / WC32. For 41-60mm drills, use C40 / WC40. Bigger shank = more rigid setup but heavier spindle load. The full size table is in the cutting diameter reference above.
What insert grade should I use for stainless steel vs aluminum?
For stainless steel (300 series), use SP series inserts with a PVD-coated grade like IC808 / IC8078 (Korloy equivalent) or UE6020 / US7020 (Mitsubishi equivalent). For aluminum, use SP series inserts with a polished uncoated grade like H1 (Korloy) or US7020 (Mitsubishi) — the polished surface prevents built-up edge. For steel, use WC series inserts with a CVD-coated grade like IC8150 / IC8250 (Korloy) or UC6010 / US7020 (Mitsubishi). For grade cross-reference across 8 brands, see the grade cross-reference hub.
Need Help Sizing the Right U-Drill?
Send us your workpiece material, hole depth, and required tolerance — we'll match the right WC / SP family + depth ratio + insert grade.
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