BEYOND SP C32-5D-SD38-SP11 Indexable U-Drill | 38mm CNC Deep Hole Drill Body
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BEYOND SP C32-5D-SD38-SP11
Precision 38mm 5D Deep Hole U-Drill | High-Rigidity CNC Indexable Boring Body
Master 38mm Deep Hole CNC Machining
The BEYOND SP C32-5D-SD38-SP11 is a professional-grade indexable insert drill engineered for high-efficiency metal removal. With its 38mm cutting diameter and massive 5D depth-to-diameter ratio, this fast hole U-drill is the ultimate solution for deep hole boring in heavy industrial workpieces. Designed for CNC lathe metal boring, it features optimized internal cooling to handle high thermal loads during high-speed drilling of carbon steel, alloy, and stainless steel.
Technical Model Identification Guide
Technical Data & Metric/Imperial Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Cutting Diameter (SD) | 38.0 mm | 1.496" |
| Shank Diameter (C) | 32.0 mm | 1.259" |
| Max Drilling Depth (5D) | 190.0 mm | 7.480" |
| Equivalent Model | SP C32-5D-SD38 | SP1.25-5D-SD1.50 |
Premium 20CrMnTi Alloy & Advanced Spiral Flute
Superior Tool Body Material: This indexable drill body is forged from high-strength 20CrMnTi alloy steel. The body is vacuum-quenched to achieve a surface hardness of HRC 50-55, ensuring high wear resistance while maintaining a flexible core to withstand the intense torque of shallow hole drilling and deep 190mm penetration.
Optimized U-Groove Spiral Flute: The spiral flute geometry is specifically enlarged to ensure smooth chip evacuation for 38mm bores. Integrated with dual internal cooling holes, it allows high-pressure coolant to flush chips instantly, protecting your SPMG11 carbide inserts from heat-related failure.
Recommended Cutting Parameters (5D 38mm)
Optimized settings for stable CNC performance:
- Cutting Speed (Vc): 100 - 160 m/min (depending on material).
- Feed Rate (f): 0.08 - 0.15 mm/rev.
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 38}$$
- Requirement: Continuous high-pressure internal cooling is mandatory.
SP Type U-Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 cutting edges (economical and stable).
- Exceptional stability and verticality in deep 5D operations.
- Stronger tool core compared to WC drills, reducing deflection.
- Requires higher spindle power/torque than WC drills.
- Chip evacuation is critical—ensure high coolant flow.
Verified Customer Feedback
"Impressive Deep Reach"
"Used this for 190mm depth in 45# steel. Straightness is perfect. Great U-drill body."
- Mark S. (USA)"Top Tier Value"
"Comparable to premium brands but much more affordable. The 20CrMnTi material is very tough."
- Dieter K. (Germany)"Excellent Chip Removal"
"Internal coolant holes are perfectly sized. No chip packing at the hole bottom."
- Takashi M. (Japan)"Very stable boring"
- Luca V. (Italy)
"Fast Shipping"
- Pierre D. (France)
Technical Support Q&A
Q: What is the benefit of the C32 shank?
A: The 32mm Side-Lock shank is standard for mid-to-large range drills, providing a secure grip in your CNC tool holder to prevent rotation under torque.
Q: Is a pilot hole required for 5D drilling?
A: For maximum precision in 5D depths, we recommend starting with a short 2D U-drill starter hole to guide the long body.
Q: Can I use this for off-center drilling?
A: Yes, U-drills can handle off-center starts on lathes, but ensure your feed rate is reduced during entry.
Technical Tip: WC vs. SP U-Drills
WC Series (Trigon): Best for general-purpose drilling on machines with lower spindle power. Economical but less rigid for deep 5D holes.
SP Series (Square): The professional choice for Deep Hole (5D) and large diameters. The SPMG square insert provides 4 cutting edges and superior core strength, resulting in straighter holes in heavy-duty CNC machining.
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.