BEYOND SP C32-5D-SD29-SP09 Indexable U-Drill | 29mm 5D CNC Deep Hole Drill Body
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BEYOND SP C32-5D-SD29-SP09
29mm 5D Indexable U-Drill | High-Precision Blind Hole Boring Specialist
Industrial Performance 29mm Deep Hole U-Drill
The BEYOND SP C32-5D-SD29-SP09 is a high-rigidity indexable insert drill engineered for demanding metalworking. Featuring a 29mm cutting diameter and a 5D depth ratio, this tool is the professional choice for blind hole boring on CNC lathes. Its advanced internal cooling system and spiral flute design ensure high-speed efficiency and superior chip evacuation in deep hole drilling applications.
Model Identification Guide
Technical Data & Size Conversion
| Specification | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 29.0 mm | 1.141" |
| Shank Diameter (C) | 32.0 mm | 1.259" |
| Max Drilling Depth (5D) | 145.0 mm | 5.708" |
| Imperial Model Ref. | SP-C32-5D-SD29 | SP-1.25-5D-1.141 |
Premium 20CrMnTi Alloy & U-Groove Geometry
Advanced Body Material: This indexable drill body is crafted from high-performance 20CrMnTi alloy steel. Through vacuum quenching, the surface hardness reaches HRC 50-55, while maintaining a shock-resistant core to withstand interrupted cuts and high torque during shallow hole drilling or deep boring.
Optimized Spiral Flute: The spiral flute (U-groove) is designed with an enlarged chip space. Combined with internal cooling holes, it effectively flushes metal chips out of the 145mm deep hole, preventing chip clogging and heat buildup that can damage your carbide inserts.
Recommended Cutting Parameters (5D 29mm)
Baseline for Carbon Steel (HB < 250). High-pressure internal cooling is mandatory:
- Cutting Speed (Vc): 110 - 160 m/min
- Feed Rate (f): 0.08 - 0.14 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 29}$$
SP Series U-Drill Pros & Cons
- Uses 4-edge SPMG square inserts for maximum economy.
- Exceptional stability for blind hole machining.
- Higher core rigidity compared to WC trigon types.
- Higher machine torque requirement for 29mm diameters.
- Strict reliance on stable internal coolant flow.
Verified Customer Feedback
"Solid Deep Boring"
"Rigidity is key at 5D, and BEYOND delivers. The 29mm diameter stays true without deflection."
- Robert H. (USA)"Perfect Blind Holes"
"The SP series is much better for blind bores than WC. Flatter bottom and more stable."
- Klaus M. (Germany)"Impressive quality"
- Kenji Y. (Japan)
"Fast chip evacuation"
- Marc L. (France)
"Great 5D reach for the price"
- Liam G. (UK)
Technical Q&A
Q: Why is the SP series recommended for blind holes?
A: SP inserts have a square geometry that creates a flatter bottom surface and offers higher body rigidity, which is essential when the tool isn't exiting the material.
Q: Is a pilot hole necessary for 29mm 5D?
A: For 5D depths, starting with a short 2D U-drill pilot hole significantly improves the straightness and lifespan of the 5D tool.
Q: Does this work with any SPMG09 insert?
A: Yes, it is compatible with all standard SPMG090408 inserts.
Technical 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 body core is thinner, making it slightly 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.