BEYOND SP C32-4D-SD34-SP11 Indexable U-Drill Body | 34mm 4D CNC Deep Hole Drill
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BEYOND SP C32-4D-SD34-SP11
34mm 4D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
High-Performance 34mm Deep Hole Boring Solution
The BEYOND SP C32-4D-SD34-SP11 is a professional indexable insert drill designed for high-stability deep hole boring. Featuring a 34mm cutting diameter and a 4D depth-to-diameter ratio (136mm reach), this tool is the industry standard for blind hole machining. Engineered with internal cooling and a specialized spiral flute, it ensures efficient chip evacuation and superior surface finishes on CNC lathes and machining centers.
Decoding the Model: SP C32-4D-SD34-SP11
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 34.0 mm | 1.338" |
| Shank Diameter (C) | 32.0 mm | 1.260" |
| Max Drilling Depth (4D) | 136.0 mm | 5.354" |
| Equivalent Model | SP-C1.25-4D-SD1.338-SP11 | |
Premium 20CrMnTi Alloy & Advanced Chip Flute
Superior Tool Body Material: This indexable drill body is crafted from high-grade 20CrMnTi alloy steel. Utilizing a vacuum-quenched hardening process (HRC 52-55), the tool exhibits exceptional wear resistance and anti-deformation properties during large diameter drilling. The shock-resistant core is specifically optimized for handling interrupted cuts.
High-Efficiency Spiral Flute (U-Groove): The U-groove geometry is engineered for maximum volume chip evacuation. In conjunction with dual internal cooling holes, it allows high-pressure coolant to flush metal chips out of the 136mm bore instantly, preventing heat buildup and protecting the carbide inserts from thermal stress.
Recommended Cutting Parameters (34mm 4D)
Parameters for Carbon Steel (HB < 250). Please adjust according to your CNC machine rigidity:
- Cutting Speed (Vc): 110 - 180 m/min
- Feed Rate (f): 0.08 - 0.18 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 34}$$
- Coolant: High-pressure internal cooling is mandatory for 4D depth to ensure chip clearance.
Require a Side-Lock Tool Holder for the 32mm Shank?
VIEW COMPATIBLE C32 HOLDERSCustomer Success Stories
"Incredible Stability"
"I’ve used many brands, but the BEYOND 34mm body has zero chatter at full 4D depth. Highly recommended."
- James L. (USA)
"Efficient Chip Flow"
"The spiral flute works great. No chip packing even in gummy materials. Fast delivery to Europe."
- Marc V. (Belgium)
"Top quality 20CrMnTi steel. Very durable. My go-to indexable drill now."
- Ricardo M. (Mexico)
"Perfect for blind bores. The SPMG11 inserts sit perfectly. No runout."
- Henry K. (Australia)
"Best price-to-performance ratio in the market today."
- Park J. (South Korea)
Why Choose the SP Series Indexable Drill?
- Uses SPMG square inserts: 4 usable edges for maximum economy.
- Optimized for Blind Hole Boring: Provides a flatter hole base.
- Heavier tool core: More rigid than WC models for deep 4D applications.
- Slightly higher cutting resistance than WC models.
- Requires stable machine power for the 34mm large diameter cut.
Frequently Asked Questions
Q: Can I use this for through holes?
A: Yes, but the SP series is specifically optimized for blind holes. If you only perform through-hole drilling, the WC series may offer faster feeds.
Q: What inserts should I buy with this?
A: This tool is designed specifically for SPMG110408 inserts.
Q: Is internal coolant necessary?
A: For a 4D depth (136mm), internal coolant is highly recommended to prevent chip buildup and tool damage.
Machinist Tip: Choosing SP vs. WC
SP (Square Inserts): The best choice for Blind Bores. The square insert geometry provides a flatter bottom and the tool body is reinforced for high-rigidity boring machining.
WC (Trigon Inserts): Specialized for Through Holes. It features a thinner core for faster chip flow but lacks the rigidity of the SP for high-precision bottom finishes.
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.