BEYOND SP C20-5D-SD16-SP06 Indexable U-Drill Body | 16mm 5D CNC Deep Hole Drill
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BEYOND SP C20-5D-SD16-SP06
16mm 5D Indexable U-Drill | Precision Blind Hole Boring Specialist
High-Performance 16mm Deep Hole Boring Specialist
The BEYOND SP C20-5D-SD16-SP06 is a professional indexable insert drill engineered for extreme stability in deep hole boring. With a 16mm cutting diameter and a 5D depth ratio (80mm reach), this tool is the primary choice for blind hole machining. Featuring internal cooling and a high-efficiency spiral flute, it ensures rapid chip evacuation and superior surface finish on CNC lathes. This rapid drill is optimized for high-feed operations in steel, alloy, and cast iron.
Decoding the Model: SP C20-5D-SD16-SP06
Metric & Imperial Technical Specifications
| Feature | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Drilling Diameter (SD) | 16.0 mm | 0.629" |
| Shank Diameter (C) | 20.0 mm | 0.787" |
| Max Drilling Depth (5D) | 80.0 mm | 3.149" |
| Imperial Model Equivalent | SP-C0.75-5D-SD0.629-SP06 | |
20CrMnTi Alloy & High-Efficiency U-Slot Design
Superior Tool Body Material: This indexable drill body is forged from 20CrMnTi alloy steel. The surface is vacuum-quenched to reach HRC 50-55, providing incredible wear resistance and preventing "tool deformation" under high-load deep hole boring. The shock-resistant core is perfect for handling interrupted cuts.
Optimized Spiral Flute (U-Groove): The specialized U-groove geometry features wide chip pockets. Combined with dual internal cooling holes, it allows high-pressure coolant to flush metal chips out of 80mm deep bores instantly, preventing chip packing and protecting the carbide inserts from heat failure.
Recommended Cutting Parameters (16mm 5D)
Suggested for Carbon Steel (HB < 250). Adjust based on machine rigidity:
- Cutting Speed (Vc): 120 - 180 m/min
- Feed Rate (f): 0.05 - 0.12 mm/rev
- Rotation Speed (N): Calculated as $$N = \frac{Vc \times 1000}{\pi \times 16}$$
- Coolant: High-pressure internal cooling (Min 1.5 MPa) is mandatory for 5D reach.
Beyond SP Series: Advantages & Considerations
- Uses 4-edge SPMG square inserts for maximum economy.
- Exceptional stability and verticality for Blind Hole Machining.
- Thicker tool core provides higher rigidity than WC drills for 5D reach.
- Higher power requirement compared to trigon drills.
- Strict requirement for high-pressure coolant to clear deep chips at 80mm.
Looking for a high-rigidity holder?
SHOP COMPATIBLE C20 TOOL HOLDERSWhat Our Global Clients Say
"Solid Deep Bores"
"I use this for 75mm blind holes in 1045 steel. The SPMG inserts last forever in this body."
- Mark T. (USA)
"Highly Rigid"
"Excellent tool body rigidity. The 20CrMnTi steel quality is obvious. Very little vibration."
- Hans B. (Germany)
"Perfect 16mm diameter control. Arrived in Tokyo in 4 days."
- Kenji Y. (Japan)
"Beyond makes the best indexable drills for the price. Period."
- Ricardo S. (Brazil)
"Smooth chip removal at 5D depth. Highly recommend."
- David W. (UK)
Technical Support Q&A
Q: Why is SP better for blind holes?
A: SP square inserts provide a flatter hole bottom profile and the tool body has a thicker core, providing maximum rigidity at 5D depth.
Q: Does it come with inserts?
A: No, this is for the tool body only. It is compatible with SPMG060204 inserts.
Q: What is the benefit of the Side-Lock (C20) shank?
A: The 20mm straight shank allows for massive clamping force in side-lock holders, preventing tool rotation under high torque.
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 5D depths.
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 than SP for extreme depths.
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.