BEYOND SP C20-5D-SD17-SP06 Indexable U-Drill Body | 17mm 5D CNC Deep Hole Drill
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BEYOND SP C20-5D-SD17-SP06
17mm 5D Indexable U-Drill | Precision Blind Hole Boring Specialist
Industrial 17mm Deep Hole Boring Specialist
The BEYOND SP C20-5D-SD17-SP06 is a professional indexable insert drill engineered for extreme stability in deep hole boring. With a 17mm cutting diameter and a 5D depth ratio (85mm reach), this tool is the primary choice for blind hole machining. Featuring internal cooling and a high-efficiency spiral flute, it ensures rapid chip evacuation and superior surface finish on CNC lathes. This rapid drill is designed for high-feed operations in steel, alloy, and cast iron.
Decoding the Model: SP C20-5D-SD17-SP06
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 17.0 mm | 0.669" |
| Shank Diameter (C) | 20.0 mm | 0.787" |
| Max Drilling Depth (5D) | 85.0 mm | 3.346" |
| Imperial Model Equivalent | SP-C0.75-5D-SD0.669-SP06 | |
High-Strength 20CrMnTi Alloy & Large Capacity U-Groove
Superior Tool Body Construction: This U-drill CNC tool body is forged from premium 20CrMnTi alloy steel. Undergoing vacuum quenching treatment, the body achieves a surface hardness of HRC 50-55. This allows the indexable drill to withstand high-torque deep hole drilling while the shock-absorbing core prevents tool breakage during interrupted cuts.
Advanced Spiral Flute Design: The spiral flute (U-Groove) is precision-ground with an enlarged chip space. Combined with internal coolant holes, this allows for effortless chip evacuation at 85mm depths, reducing heat buildup and protecting your carbide inserts from premature wear.
Recommended Cutting Parameters (17mm 5D)
Optimized for Steel (HB < 250). Please adjust based on your CNC machine's rigidity:
- Cutting Speed (Vc): 120 - 180 m/min
- Feed Rate (f): 0.06 - 0.12 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 17}$$
- Coolant Requirement: High-pressure internal cooling is 100% required for 5D reach.
Beyond SP Series: Performance Analysis
- Uses 4-edge SPMG square inserts for maximum economy.
- Engineered for Blind Hole Machining with a flatter hole bottom.
- Massive tool core rigidity—ideal for 5D deep hole boring.
- Higher spindle load than WC drills; requires stable machine power.
- Requires high-pressure center water for chip flushing at 85mm depth.
Need a compatible holder for the 20mm shank?
VIEW COMPATIBLE C20 SIDE-LOCK HOLDERSWhat Our Global Clients Say
"Incredible Depth"
"Drilling 80mm deep in 4140 steel, this SP drill didn't flinch. The diameter stayed true throughout."
- James L. (USA)
"Best for Blind Holes"
"I use the SP series for all our manifold blind holes. The flat bottom saves us a lot of finishing time."
- Dieter K. (Germany)
"Fast chip removal and the 20mm shank fits my older lathe perfectly."
- Sato H. (Japan)
"High quality from Beyond. Much better than the local brand."
- Marco V. (Italy)
"Good tool. Just make sure your coolant pressure is high for 5D."
- Robert P. (Canada)
Frequently Asked Questions
Q: Does this include the SPMG06 inserts?
A: No, this is the tool body only. You will need to purchase SPMG060204 inserts separately.
Q: Can I use this for through holes?
A: Yes, but the SP series is specifically optimized for blind hole machining. For dedicated through-hole production, our WC series is more efficient.
Q: What is the benefit of the 20mm shank?
A: The C20 shank is a standard size for smaller CNC lathes, allowing high-rigidity deep drilling on compact machines.
Machinist Tip: SP vs. WC U-Drills
SP Series (Square Inserts): The best choice for Blind Holes. Square inserts (SPMG) provide a flatter hole bottom and have a thicker drill core for maximum rigidity in deep boring (5D).
WC Series (Trigon Inserts): Specifically designed for Through Holes. The 3-sided inserts (WCMX/WCMT) reduce cutting force, but the body core is thinner than the SP series.
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.