BEYOND SP C25-3D-SD13.5-SP05 Indexable U-Drill Body | 13.5mm 3D CNC Boring Drill
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BEYOND SP C25-3D-SD13.5-SP05
13.5mm 3D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
Industrial-Grade 13.5mm Indexable Boring Solution
The BEYOND SP C25-3D-SD13.5-SP05 is a high-precision indexable insert drill designed for high-efficiency CNC boring. With a 13.5mm cutting diameter and a 3D depth ratio (40.5mm reach), this tool is optimized for blind hole machining. Featuring internal cooling and a high-performance spiral flute, it offers exceptional chip control and surface finish in steel, alloy steel, and stainless steel.
Decoding the Model: SP C25-3D-SD13.5-SP05
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 13.5 mm | 0.531" |
| Shank Diameter (C) | 25.0 mm | 0.984" |
| Max Drilling Depth (3D) | 40.5 mm | 1.594" |
| Equivalent Model | SP-C0.984-3D-SD0.531-SP05 | |
High-End 20CrMnTi Build & Precision Chip Grooves
Material Strength: This indexable drill body is forged from 20CrMnTi alloy steel and treated with vacuum quenching (HRC 52-55). This ensures the rigidity needed for large diameter drilling without tool deflection. The Black Oxide surface provides a smooth finish and heat resistance.
The Spiral Flute: The U-drill features an optimized spiral flute design (U-groove) that creates a wide pathway for chip evacuation. Integrated internal cooling holes spray coolant directly to the insert edges, effectively washing out chips—a vital requirement for successful blind hole machining.
Recommended Cutting Parameters (13.5mm 3D)
General guidelines for Carbon Steel and Alloy Steel. Use the formula below for your CNC setup:
Rotation Speed (N) = (Vc × 1000) / (π × 13.5)
Vc = Cutting Speed | π ≈ 3.14 | D = 13.5mm
- Cutting Speed (Vc): 130 - 200 m/min
- Feed Rate (f): 0.05 - 0.10 mm/rev
- Coolant: High-pressure internal cooling is required for deep hole boring.
Pair with a high-rigidity BEYOND Side-Lock C25 Holder for zero vibration:
SHOP COMPATIBLE C25 TOOL HOLDERSVerified Global Reviews
"Excellent 13.5mm Drill"
"I use this for blind holes on my CNC lathe. The 3D reach is perfect and the chip flow is very smooth."
- Jurgen H. (Germany)
"Very rigid. The SPMG05 pockets are high quality. No vibration at all."
- David L. (USA)
"Internal coolant holes work perfectly. Far better than using twist drills."
- Matteo R. (Italy)
"Good value. Shipping was fast."
- Arthur L. (UK)
"Industrial quality. Our machine shop relies on BEYOND."
- S. Takahashi (Japan)
SP Series Indexable Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 usable edges—very cost-effective.
- Designed for Blind Hole Machining with a flatter hole bottom.
- Stronger body core for high-pressure deep hole drilling.
- Requires high horsepower machines to drive indexable inserts effectively.
- Not suitable for use without internal coolant flow.
Technical Q&A
Q: Why choose SP over WC for blind bores?
A: SP square inserts provide a flatter profile at the bottom of the hole. The SP body is also designed with a thicker core, essential for large diameter boring stability.
Q: Is this tool body compatible with all SPMG05 inserts?
A: It fits standard SPMG050204 carbide inserts. For best results, use BEYOND inserts specifically coated for your material.
Q: Can I use this on a manual drill press?
A: No. U-drills require the high torque and rigidity found in CNC Lathes and Milling Machines.
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 large diameter machining.
WC Series (Trigon): Primarily used for Through Hole applications. WC inserts offer more cutting edges but the body core is thinner, making it less rigid for 13.5mm 3D tasks.
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.