BEYOND SVJCL2020K16 Left Hand External Turning Tool Holder 20mm for VCMT1604
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BEYOND SVJCL2020K16 External Turning Tool Holder
Product Overview
"Which left-hand tool holder is best for 93° profiling and medium finishing on medium-sized steel workpieces using V-shape inserts?"
The BEYOND SVJCL2020K16 is an industrial-grade, left-hand (LH) external turning holder designed for 35° rhombic VCMT 1604 or VCGT 1604 inserts. With a 20x20mm shank, it strikes the perfect balance between rigidity and accessibility for compact to mid-sized CNC lathes. Its 93° approach angle ensures excellent clearance for profiling and contouring operations, while the high-precision seat ensures maximum insert stability.
Key Features
- 93° Precision Geometry: Specifically engineered for back-turning and profiling without rubbing.
- Forged Alloy Steel: Body hardness reaches HRC 42-45, effectively dampening chatter during high-speed cuts.
- S-Type Clamping: Screw-down mechanism provides a low-profile design and secure insert locking.
- Extreme Wear Resistance: Finished with a specialized black oxide coating to prevent corrosion and chip welding.
Model Decoding: SVJCL 2020 K 16
Screw
35° V
93°
7° Cl.
Left
20mm
125mm
Size
Technical Specifications
| Feature | Metric (ISO) | Imperial Equivalent |
|---|---|---|
| Shank Size | 20 x 20 mm | 0.787" x 0.787" |
| Overall Length | 125 mm | 4.921" |
| Compatible Inserts | VCMT1604 / VCGT1604 | VC..33x |
Recommended Cutting Parameters
| Workpiece Material | Vc (Speed) | fn (Feed Rate) |
|---|---|---|
| Carbon Steel (P) | 150 - 280 m/min | 0.15 - 0.35 mm/rev |
| Stainless Steel (M) | 110 - 200 m/min | 0.12 - 0.25 mm/rev |
Matching Inserts
Ensure peak performance by pairing this holder with BEYOND BY815 (Steel) or BYM25 (Stainless) series inserts.
View VCMT1604 Inserts →Applications & Compatibility
Ideal for medium-to-fine finishing of long shafts and precision contouring. This tool is widely used in hydraulic components, automotive engine parts, and hardware manufacturing. Compatible with CNC lathes from Haas, Mazak, Doosan, Okuma, and Citizen.
Verified Customer Feedback
"Reliable LH Holder" - James H. (USA)
Fits my Haas perfectly. The vibration dampening is superior to cheaper alternatives. Using it on 4140 steel.
"Top Precision" - Dieter S. (Germany)
Sehr gut. Accurate seat for the VCMT insert. No deviation after long shifts.
"Perfect for Stainless" - Marco P. (Italy)
Ottima qualità. Used it for profiling stainless steel rollers. The surface finish is exceptional.
"Good Value" - Sato K. (Japan)
Cost-effective solution compared to big brands. The black coating lasts quite a while.
Expert Technical FAQ
A: No, this is an external turning holder. For internal boring, please look for our 'E-SVUCL' series boring bars.
A: SVJCL is Left-Handed (cutting toward the headstock in specific setups), and SVJCR is Right-Handed. Always check your machine turret's rotation.
A: The SVJCL2020K16 is an S-type holder where the insert sits directly on the precision-milled pocket for maximum clearance. No shim required.
Workpiece Matrix: P (Steel) ●●● | M (Stainless) ●●● | K (Cast Iron) ●●○ | N (Non-Ferrous) ●●○
Equivalent Models: Sandvik SVJCL-2020K16, Kennametal SVJCL2020K16, Iscar SVJCL-2020-K16.
Troubleshooting: If chatter occurs, check your center height. Ensure the tool overhang is minimized to less than 3x the shank width.
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.