BEYOND SP C40-2D-SD47-SP14 Indexable U-Drill Body | 47mm 2D CNC Boring Drill
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BEYOND SP C40-2D-SD47-SP14
47mm 2D Heavy-Duty U-Drill | Precision Blind Hole Boring Specialist
Industrial-Grade 47mm Indexable Boring Solution
The BEYOND SP C40-2D-SD47-SP14 is a professional indexable insert drill engineered for high-torque CNC boring and large-diameter metal removal. With a 47mm cutting diameter and a 2D depth ratio (94mm reach), this tool is the industry standard for blind hole machining. Featuring internal cooling and a precision-engineered spiral flute, it ensures rapid chip evacuation and superior surface finish in steel, alloys, and stainless steel.
Decoding the Model: SP C40-2D-SD47-SP14
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 47.0 mm | 1.850" |
| Shank Diameter (C) | 40.0 mm | 1.574" |
| Max Drilling Depth (2D) | 94.0 mm | 3.700" |
| Equivalent Model | SP-C1.57-2D-SD1.85-SP14 | |
Forged 20CrMnTi Alloy & High-Efficiency Spiral Flutes
Industrial Build: This indexable drill body is forged from premium 20CrMnTi alloy steel and vacuum quenched (HRC 52-55). This core strength is critical for large diameter drilling stability and preventing tool deflection. The surface features a Black Oxide finish to resist corrosion and thermal wear during rapid hole boring.
Advanced Slot Design: The U-drill features an optimized spiral flute (U-groove) specifically engineered to evacuate the high volume of chips produced by a 47mm bore. Integrated internal cooling holes allow high-pressure coolant to flush metal chips directly out of the cutting zone, essential for successful blind hole machining.
Recommended Cutting Parameters (47mm 2D)
Optimal settings for Carbon Steel and Alloy Steel. Adjust based on CNC rigidity and torque:
Rotation Speed (N) = (Vc × 1000) / (π × 47)
Vc = Cutting Speed | π ≈ 3.14 | D = 47mm
- Cutting Speed (Vc): 100 - 180 m/min
- Feed Rate (f): 0.08 - 0.15 mm/rev
- Coolant: Center-through internal cooling is mandatory for 47mm bores.
Pair with a high-rigidity Side-Lock C40 Holder for maximum stability:
SHOP COMPATIBLE C40 TOOL HOLDERSVerified Global Reviews
"Massive Performance"
"I was worried about vibration at 47mm, but this tool body is incredibly rigid. The blind hole finish is perfect."
- David K. (USA)
"Excellent chip evacuation. The spiral flute is designed for high-volume removal."
- Lars H. (Sweden)
"Great value for an industrial-sized drill. Using it on our CNC lathe daily."
- Sergio V. (Mexico)
"Standard SPMG14 inserts fit perfectly with no movement."
- P. Dubois (France)
"BEYOND tools never disappoint. Rigidity is on par with premium brands."
- R. Singh (India)
SP Series Indexable Drill: Advantages & Considerations
- Uses SPMG square inserts with 4 cutting edges—maximum economy.
- Designed specifically for Blind Hole Machining (Flatter hole bottom).
- Increased core thickness for high stability during 47mm boring.
- High horsepower machine requirement due to the 47mm tool surface.
- Needs high coolant pressure to ensure chips don't recycle in the bore.
Technical Q&A
Q: Why is SP preferred over WC for 47mm blind bores?
A: SP square inserts provide a flatter profile at the hole bottom. Additionally, the SP body core is structurally thicker at this diameter, significantly reducing vibration compared to WC designs.
Q: What insert size does this use?
A: This model uses standard SPMG140512 carbide inserts. We offer various grades for different metals in our store.
Q: What does the 2D signify?
A: 2D indicates the drilling depth capacity is 2x the diameter. For this 47mm drill, you can bore up to 94mm deep.
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 edges but the body core is thinner, making it less rigid for 47mm 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.