BEYOND SP C32-5D-SD26.5-SP07 Indexable U-Drill | 26.5mm 5D CNC Deep Hole Drill Body
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BEYOND SP C32-5D-SD26.5-SP07
26.5mm 5D Indexable U-Drill | High-Rigidity Blind Hole Boring Specialist
Industrial-Grade 26.5mm Deep Hole Boring
The BEYOND SP C32-5D-SD26.5-SP07 is a high-performance indexable insert drill engineered for precision metal removal. With a 26.5mm cutting diameter and a massive 5D depth-to-diameter ratio, this fast hole U-drill is the ultimate tool for deep hole boring. Designed specifically for CNC lathe metal boring, it excels in creating flat-bottom blind holes with its optimized internal cooling system.
Model Identification Guide
Technical Data & Units Comparison
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 26.5 mm | 1.043" |
| Shank Diameter (C) | 32.0 mm | 1.259" |
| Max Drilling Depth (5D) | 132.5 mm | 5.216" |
| Imperial Equivalent Model | SP-C1.25-5D-SD1.043-SP07 | |
20CrMnTi Alloy & Advanced Spiral Flute
Superior Tool Body Material: This indexable drill body is forged from 20CrMnTi high-strength alloy steel. The surface is vacuum-quenched to achieve HRC 50-55, providing immense wear resistance while the core remains tough to withstand high torque during shallow hole drilling or deep boring.
Optimized U-Groove Flute: The spiral flute geometry is precision-engineered with extra-large chip slots. Paired with dual internal cooling holes, it allows high-pressure coolant to flush metal chips out of the hole instantly, protecting your carbide inserts from chip re-cutting.
Recommended Cutting Parameters (5D 26.5mm)
Suggested for Carbon Steel (HB < 250). Adjust based on rigidity:
- Cutting Speed (Vc): 120 - 180 m/min
- Feed Rate (f): 0.06 - 0.12 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 26.5}$$
- Coolant Requirement: High-pressure internal cooling is mandatory for 5D depth.
SP Series U-Drill: Advantages & Considerations
- Uses 4-edge SPMG square inserts (High economic efficiency).
- Exceptional stability and verticality for 132.5mm deep holes.
- Excellent for blind hole machining with flatter bottoms.
- Requires higher spindle power/torque than trigon drills.
- Sensitive to low-pressure coolant systems.
Verified Customer Feedback
"Exceptional 5D stability"
"Rigidity is incredible. No vibration even at full 5D depth. BEYOND is my go-to brand now."
- Robert H. (USA)"Perfect Blind Holes"
"Flat bottom finish is much better than my old WC drill. Perfect for my hydraulic parts."
- Klaus M. (Germany)"High build quality"
- Kenji Y. (Japan)
"Rugged and reliable"
- Alessandro P. (Italy)
"Best value for deep CNC drilling"
- Liam G. (UK)
Technical Support Q&A
Q: What is the benefit of the Side-Lock (C32) shank?
A: It provides a massive clamping surface to prevent the tool from spinning in the holder during high-torque 26.5mm cuts.
Q: Is a pilot hole required for 5D drilling?
A: For 5D (132.5mm), we highly recommend starting with a 1D or 2D short U-drill to guide the deep hole tool for maximum straightness.
Q: Can I use this for stainless steel?
A: Yes, with the correct coating on your SPMG07 inserts and proper internal cooling, it handles stainless steel exceptionally well.
Machinist Tip: SP vs. WC U-Drills
SP Series (Square): The professional choice for Blind Hole (Blind Bores). The square insert geometry provides a flatter hole bottom. Superior rigidity for Deep Hole (5D) drilling.
WC Series (Trigon): Primarily used for Through Hole applications. WC inserts offer more cutting edges but the tool core is less rigid than SP for extreme depths.
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.