BEYOND SP C25-3D-SD25-SP07 Indexable U-Drill Body | 25mm 3D CNC Boring Drill
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BEYOND SP C25-3D-SD25-SP07
25mm 3D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
Industrial-Grade 25mm Indexable Boring Solution
The BEYOND SP C25-3D-SD25-SP07 is a high-performance indexable insert drill engineered for industrial stability. Featuring a 25mm cutting diameter and a 3D depth ratio (75mm reach), this tool is the professional choice for blind hole machining. With integrated internal cooling and a precision spiral flute, it ensures rapid chip removal and high-efficiency CNC boring.
Decoding the Model: SP C25-3D-SD25-SP07
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 25.0 mm | 0.984" |
| Shank Diameter (C) | 25.0 mm | 0.984" |
| Max Drilling Depth (3D) | 75.0 mm | 2.952" |
| Equivalent Model | SP-C0.984-3D-SD0.984-SP07 | |
Forged 20CrMnTi Alloy & High-Efficiency Spiral Flute
Industrial-Grade Build: Forged from premium 20CrMnTi alloy steel, this indexable drill body undergoes vacuum quenching to HRC 52-55. This provides the extreme core rigidity required for large diameter drilling and high-torque CNC environments. The surface is treated with Black Oxide for superior thermal resistance and rust prevention.
Optimized Spiral Flute: The U-drill features a wide-volume spiral flute (U-groove). When paired with dual internal cooling holes, it allows high-pressure coolant to eject chips instantly, protecting the carbide inserts from heat build-up during blind hole machining.
Recommended Cutting Parameters (25mm 3D)
Guidelines for Steel and Cast Iron applications. Adjust based on CNC rigidity:
Rotation Speed (N) = (Vc × 1000) / (π × 25)
Vc = Cutting Speed | π ≈ 3.14 | D = 25mm
- Cutting Speed (Vc): 110 - 180 m/min
- Feed Rate (f): 0.08 - 0.15 mm/rev
- Coolant: Internal coolant is essential for effective chip evacuation at 3D depth.
Pair with a high-rigidity C25 side-lock holder for best results:
VIEW COMPATIBLE C25 TOOL HOLDERSGlobal Customer Feedback
"Impressive 25mm Body"
"Solid performance on our CNC lathe. The BEYOND body handles 45# steel effortlessly. High-precision pocket fit."
- Hans M. (Germany)
"Internal coolant is very effective. No chip jamming."
- Marek W. (Poland)
"Great value for an industrial U-drill. Using it daily."
- Pedro S. (Brazil)
"Arrived fast in the UK. Best 25mm body I've used for the price."
- Arthur L. (UK)
"Robust design, fits our Geely production line standards perfectly."
- Y. Watanabe (Japan)
SP Series Indexable Drill: Insights
- Uses 4-edge SPMG square inserts for lower cost-per-edge.
- Optimized for Blind Hole Machining (Flatter hole bottom).
- Reinforced body core provides maximum stability for 25mm diameters.
- Requires stable CNC power to drive the 25mm diameter effectively.
- Coolant pressure is critical for chip evacuation at 3D depths.
Technical Q&A
Q: Why choose SP over WC for blind hole drilling?
A: SP square inserts provide a flatter hole bottom. The SP body design also features a thicker core, which is vital for rigidity in large diameter boring.
Q: What inserts should I use with this?
A: This body is specifically designed for SPMG07T308 carbide inserts. Using BEYOND brand inserts ensures optimal tool life.
Q: Can I use this without internal coolant?
A: For 3D depths, internal coolant is highly recommended to prevent chip welding and insert failure.
Machinist Tip: SP vs. WC U-Drills
SP Series (Square): The specialist for Blind Hole (Blind Bores). Square inserts allow for a flatter profile and greater body strength for larger boring tasks.
WC Series (Trigon): Best suited for Through Hole applications. While they offer more edges, the body core is thinner, making them less ideal for heavy-duty 25mm blind holes.
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.