BEYOND SVUCL2020K16 External Turning Tool Holder for VCMT/VCGT 1604 Inserts
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BEYOND SVUCL2020K16
Precision 20mm Left-Hand External Turning Tool Holder
Product Overview
"Which tool holder is best for high-stability profiling and external finishing using V-bottom diamond inserts on a 20mm tool post?"
The BEYOND SVUCL2020K16 is an industrial-grade Left-Hand (L) external turning tool holder designed for precision profiling. It is the optimal choice for operators using VCMT1604 or VCGT1604 inserts. Crafted from high-tensile quenched alloy steel, this holder features a 93° approach angle, specifically engineered to provide clearance for complex contours while maintaining the rigidity required for vibration-free finishing in steel, stainless, and heat-resistant alloys.
Core Industrial Advantages
Quenched Alloy Steel Shank
Heat-treated to HRC 42-45, ensuring superior impact resistance and preventing shank deformation under heavy cutting loads.
93° Precision Profiling
The specialized geometry allows for aggressive profiling and facing with a single tool, reducing setup time and tool changes.
Nickel-Coated Finish
Enhanced surface treatment provides excellent corrosion resistance and chip-flow smoothness for cleaner work environments.
Technical Specifications
Model Decoding Guide
Screw Clamp
V-Insert (35°)
93° Angle
7° Clearance
Left Hand
20x20mm Shank
125mm Length
Insert Size 16
| Feature | Metric (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Shank Dimensions | 20 x 20 mm | ~ 3/4" x 3/4" |
| Overall Length | 125 mm | ~ 4.92 Inches |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Steel (ISO P) | 120 - 220 m/min | 0.10 - 0.25 mm/rev |
| Stainless (ISO M) | 80 - 150 m/min | 0.08 - 0.20 mm/rev |
Matching Inserts & Spare Parts:
Includes: Shim MV1604, Screw M4*10, Wrench T15.
Industrial Applications
- Profiling: Multi-directional contouring and undercutting.
- Finishing: High-speed surface finishing for OD turning.
- Materials: Carbon Steel, Alloy Steel, Stainless Steel, and Cast Iron.
Machine Compatibility
Fits all standard CNC Lathe turrets and manual lathes with a 20mm square tool seat. Fully compatible with Haas, Mazak, Doosan, and Okuma tool posts using standard metric block sizes.
Technical Quality Comparison
| Attribute | BEYOND Premium | Standard Market Holder |
|---|---|---|
| Shank Material | 40CrMo Quenched Steel | Generic 45# Steel |
| Durability Index | High (Anti-Vibration) | Medium |
Global Machinist Reviews
Solid Performance
"Used this for profiling 316 stainless. The rigidity is impressive for a 20mm shank. Excellent chip clearance."
— Robert J., USA 🇺🇸Qualità Eccellente
"BEYOND tool holders are always reliable. The pocket is machined perfectly, no insert movement."
— Marco L., Italy 🇮🇹Precise Tooling
"Great value. Replaced a much more expensive Sandvik holder and saw no drop in finish quality."
— Thomas K., Germany 🇩🇪Technical FAQ
Q: What is the benefit of the 93° angle?
A: It provides optimal clearance for external profiling and allows the tool to face and turn without changing the tool position.
Q: Is this holder compatible with VCMT and VCGT?
A: Yes. It accepts any 35-degree diamond insert with a 7-degree clearance (VCMT/VCGT) in the 1604 size.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.