BEYOND SP C25-5D-SD22-SP07 Indexable U-Drill Body | 22mm 5D CNC Deep Hole Drill
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BEYOND SP C25-5D-SD22-SP07
22mm 5D Indexable U-Drill | Precision Blind Hole Boring Specialist
Professional 22mm Deep Hole Boring Solution
The BEYOND SP C25-5D-SD22-SP07 is a high-performance indexable insert drill engineered for precision metal removal. With a 22mm cutting diameter and a 5D depth-to-diameter ratio (110mm reach), 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 high-pressure internal cooling system.
Model Code Specification Breakdown
Technical Data & Size Conversion
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 22.0 mm | 0.866" |
| Shank Diameter (C) | 25.0 mm | 0.984" |
| Drilling Depth (5D) | 110.0 mm | 4.331" |
| Imperial Equivalent | SP-C1.0-5D-SD0.866-SP07 | |
20CrMnTi Alloy & Advanced Spiral Flute
Premium Tool Material: This indexable drill body is forged from 20CrMnTi high-strength alloy steel. The surface is vacuum-quenched to achieve HRC 50-55, providing incredible wear resistance while the core remains shock-resistant to withstand interrupted cuts during shallow hole drilling or deep boring.
Optimized Spiral Flute (U-Groove): The specialized U-groove geometry features wide chip pockets. Combined with dual internal cooling holes, it allows high-pressure coolant to flush metal chips out of 110mm deep bores instantly, preventing chip packing and protecting the carbide inserts from heat failure.
Recommended Cutting Parameters (5D 22mm)
Optimized for Carbon Steel (HB < 250). Adjust for machine rigidity:
- Cutting Speed (Vc): 120 - 180 m/min
- Feed Rate (f): 0.05 - 0.11 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 22}$$
- Coolant: High-pressure internal cooling (Min 1.5 MPa) is mandatory for 5D.
SP Series U-Drill: Advantages & Considerations
- Uses 4-edge SPMG square inserts (Higher cost-efficiency).
- Exceptional stability and verticality for Blind Hole Machining.
- Thicker tool core provides higher rigidity than WC drills for 5D reach.
- Requires more spindle power/torque than trigon (WC) drills.
- Requires high-pressure coolant to ensure chip flushing at 110mm depth.
Verified Customer Feedback
"Solid Deep Bores"
"Running this for 100mm deep blind holes. Zero vibration and perfect diameter control."
- Mark T. (USA)"Superior Rigidity"
"The 20CrMnTi steel is very tough. Much better bottom finish than the WC drills we used to use."
- Hans B. (Germany)"Fast shipping to Italy. The spiral flute clears chips perfectly."
- Alessandro P. (Italy)
"Excellent price-to-performance ratio. BEYOND is our primary supplier."
- Kenji Y. (Japan)
"Reliable tool for 22mm deep boring."
- Liam G. (UK)
Technical Support Q&A
Q: Why is SP better for blind holes?
A: SP square inserts provide a flatter hole bottom profile and the tool body has a thicker core, providing maximum rigidity at 5D depth.
Q: Is a pilot hole required?
A: For 5D (110mm), we recommend starting with a short 2D U-drill starter hole to ensure the tool enters perfectly straight.
Q: Can I use this on a manual lathe?
A: U-drills require high torque and constant feed. We recommend using them on CNC machines with internal coolant capability.
Machinist Tip: SP vs. WC U-Drills
SP Series (Square): The professional choice for Blind Hole (Blind Bores). Square inserts create a flatter bottom and offer maximum core strength for 5D depths.
WC Series (Trigon): Primarily used for Through Hole applications. WC inserts offer 6 edges but the body core is thinner, making it less rigid than SP for extreme depths.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.