BEYOND SP C40-2D-SD34.5-SP14 Indexable U-Drill Body | 34.5mm 2D CNC Boring Drill
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BEYOND SP C40-2D-SD34.5-SP14
34.5mm 2D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
Industrial 34.5mm Indexable Boring Solution
The BEYOND SP C40-2D-SD34.5-SP14 is a professional indexable insert drill engineered for high-torque CNC boring. With a 34.5mm cutting diameter and a 2D depth ratio (69mm reach), this tool is a dedicated blind hole machining specialist. Featuring dual internal cooling ports and an optimized spiral flute, it ensures high-speed efficiency in carbon steel, alloy steel, and stainless steel.
Model Breakdown: SP C40-2D-SD34.5-SP14
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 34.5 mm | 1.358" |
| Shank Diameter (C) | 40.0 mm | 1.574" |
| Max Drilling Depth (2D) | 69.0 mm | 2.716" |
| Equivalent Model | SP-C1.57-2D-SD1.35-SP14 | |
Premium 20CrMnTi Alloy & High-Volume Spiral Flutes
Industrial Build: Our U-drill bodies are crafted from superior 20CrMnTi alloy steel, vacuum quenched to HRC 52-55. This ensures the 34.5mm drill remains rigid under high-pressure rapid hole boring cycles, reducing vibration and extending the life of your SPMG carbide inserts.
Advanced Slot Geometry: The tool body features an enlarged spiral flute (U-groove) designed for the massive chip volume of a 34.5mm bore. The internal cooling system flushes coolant through the head, ensuring chips are evacuated instantly—preventing "chip packing" in deep blind hole machining.
Recommended Cutting Parameters (34.5mm 2D)
Settings for Carbon Steel (HB < 250). Adjust based on material hardness:
Rotation Speed (N) = (Vc × 1000) / (π × 34.5)
- Cutting Speed (Vc): 110 - 190 m/min
- Feed Rate (f): 0.10 - 0.20 mm/rev
- Coolant: Mandatory Center-through internal cooling.
Maximize stability with our high-performance BEYOND Side-Lock C40 Holder:
SHOP COMPATIBLE C40 TOOL HOLDERSVerified Customer Feedback
"Exceptional rigidity"
"I've swapped all my old boring bars for this 34.5mm U-drill. Much faster for blind hole production."
- Hans M. (Germany)
"Fits SPMG14 perfectly. No vibration even at high feed rates."
- Sarah L. (Canada)
"Fast shipping to Melbourne. Tooling works as described."
- James R. (Australia)
"Best price for 34.5mm boring tools on the market."
- Mateo G. (Mexico)
"Solid 2D depth stability."
- Kenji S. (Japan)
SP Series U-Drill: Pros & Cons
- Flat-bottom geometry ideal for blind holes.
- Economical 4-edge SPMG inserts.
- Increased core thickness for high-rigidity boring.
- Requires higher CNC torque for 34.5mm diameters.
- Must have high-pressure internal coolant to function correctly.
Frequently Asked Questions
Q: Can I use this for through-holes?
A: Yes, but the SP series is optimized for blind holes. For exclusive through-hole work, the WC series is often faster due to chip-breaking geometry.
Q: What inserts does this use?
A: It uses SPMG140512 or similar SPMG14 carbide inserts.
Q: Does it include the mounting screw and wrench?
A: Yes, all BEYOND U-drill bodies include the required insert screws and a Torx wrench.
Quick Tip: SP vs. WC Selection
Choose the SP Series if you are machining blind holes or need a flatter hole base. The 4-edge square insert is more robust. Choose the WC Series for through-hole drilling where productivity and 6-edge economy are the priority.
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.