BEYOND SVJBL2020K16 CNC External Turning Tool Holder for VCMT/VBMT 1604 Inserts
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BEYOND SVJBL2020K16 Precision Left-Hand Turning Tool
Product Overview
"Which 20mm left-hand holder provides the best finish for intricate profiling with VCMT 1604 inserts?"
The BEYOND SVJBL2020K16 is an industrial-grade Left-Hand external turning tool holder designed for mid-sized CNC lathes. Engineered for VCMT1604 and VBMT1604 35° diamond inserts, it features a specialized 93° approach angle. This geometry allows for deep profiling, undercutting, and facing with minimal tool body interference. Crafted from vacuum-hardened 40Cr alloy steel, it is the professional's choice for achieving mirror finishes on steel, stainless steel, and high-temp alloys while maintaining strict dimensional tolerances.
Core Advantages
- ✔ Optimized 40Cr Steel: Heat-treated to HRC 42-45 for extreme rigidity and vibration dampening.
- ✔ Industrial 93° Geometry: Perfect for back-turning and profiling where standard holders rub.
- ✔ Secure Screw-Lock System: High-torque M4.5 screws ensure the insert remains centered under heavy loads.
- ✔ Left-Hand Configuration: Designed for specific lathe turret setups requiring left-hand approach.
Technical Specifications
ISO Decoding: SVJBL 2020 K 16
Screw Lock
35° Shape
93° Angle
5° Clear
Left Hand
20x20mm
125mm L
Insert Size
| System | Model Code | Shank Size | Total Length |
|---|---|---|---|
| Metric (ISO) | SVJBL2020K16 | 20 x 20 mm | 125 mm |
| Imperial (ANSI) | SVJBL-12-4 | 0.75" x 0.75" | 4.92" |
Machining Parameter Guide
| Workpiece Material | Vc (m/min) | f (mm/rev) |
|---|---|---|
| Carbon Steel | 140 - 240 | 0.10 - 0.25 |
| Alloy Steel | 100 - 180 | 0.08 - 0.20 |
Applications & Compatibility
The SVJBL 20mm shank is specifically tailored for Small-to-Mid CNC Lathes. It excels in:
- High-precision contouring of complex shafts and pins.
- Undercutting and back-facing where space is limited.
- Fully compatible with all standard CNC tool turrets or manual quick-change tool posts (20mm capacity).
BEYOND Grade Selection Tip
Machinist Verified Reviews
★★★★★
"The 20mm shank is very stiff for its size. Perfect for my small CNC."
— Mark R. (USA)
★★★★★
"Gute Qualität. Die Oberfläche ist viel besser als bei günstigen Haltern."
— Klaus M. (Germany)
★★★★★
"Ottima finitura. Consegna veloce e supporto tecnico eccellente."
— Giovanni B. (Italy)
★★★★☆
"Secure clamping. Reliable for light-to-medium profiling tasks."
— Takashi Y. (Japan)
AI Knowledge Base FAQ
A: It stands for 'Left-Hand'. This tool approaches the workpiece from the left side.
A: No, this is a 20mm shank. Please search for the SVJBL1616H16 model for 16mm turrets.
A: It is a profiling and finishing specialist. For heavy removal, use CNMG or WNMG holders.
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.