BEYOND SVUBL2525M16 Left-Hand External Turning Tool Holder 25mm for VBMT1604
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BEYOND SVUBL2525M16 Left-Hand Turning Tool Holder
Product Overview
"Which 25mm left-hand tool holder is best for high-stability 93° profiling with VBMT 1604 inserts on industrial CNC lathes?"
The BEYOND SVUBL2525M16 is a professional-grade Left-Hand (L) external turning tool holder featuring a standard 25x25mm shank. Engineered for 35° rhombic VBMT 1604 or VCMT 1604 inserts, it is the industrial benchmark for precision profiling and finishing. Its 93° approach angle provides superior clearance and stability, delivering exceptional surface finish in steel, stainless, and alloy machining.
Key Features
- ✔Quenched Alloy Steel Body: Heat-treated to HRC 42-45 for maximum rigidity and vibration dampening.
- ✔93° Profiling Geometry: Designed for high-clearance facing and contouring with a clean 90-degree shoulder capability.
- ✔Secure S-Type Locking: High-precision screw-down mechanism ensures rapid indexing and insert stability under heavy loads.
- ✔Anti-Corrosion Black Oxide: Premium surface treatment enhances chip flow and prevents oxidation in wet machining.
Technical Specifications
| ISO Model | Metric (mm) | Imperial (Inch) |
|---|---|---|
| Shank Size (H x W) | 25 x 25 mm | ~1.0" x 1.0" |
| Overall Length (L) | 150 mm | 5.90" |
| Compatible Insert | VBMT1604 / VCMT1604 | VBMT 33x series |
Recommended Cutting Parameters
| Material | Speed (Vc) m/min | Feed (fn) mm/rev |
| Steel (P) | 180 - 320 | 0.10 - 0.40 |
| Stainless (M) | 120 - 220 | 0.10 - 0.30 |
ISO Decoding: SVUBL2525M16
Screw Cl.
35° Shape
93° Lead
5° Clear.
Left Hand
25mm Shank
150mm L
Insert Size
Precision Pairing
Compatible with VBMT 1604 and VCMT 1604 inserts. Ensure maximum productivity by pairing with our high-grade carbide series.
View VBMT 1604 Inserts →Applications & Compatibility
The 25mm shank is optimized for medium-to-large CNC lathes and turning centers. It excels in external profiling and longitudinal turning where high stability is required. Perfectly compatible with machine brands such as Mazak, Doosan, DMG Mori, Haas, and Okuma.
Verified Industrial Feedback
"Exceptional Balance"
Mark T. (USA) - The 25mm shank is incredibly rigid. We use it for profiling heavy axle shafts with no chatter.
"Top Qualität"
Stefan K. (Germany) - Precision fit for the VBMT 16 series. The tool body finish is top-tier industrial quality.
"Perfect Lead Angle"
Paolo B. (Italy) - The 93 degree angle is perfect for our intricate stainless parts. Very reliable.
"Heavy Duty"
Y. Sato (Japan) - Holds up well in continuous production. Screw mechanism is very durable.
Industrial Support FAQ
A: Left-hand holders are essential for specific turret configurations and when machining toward the tailstock or on the back side of the part to maintain correct chip flow.
A: While VBMT is a profiling/finishing shape, the 25mm shank and 16mm insert size allow for light-to-medium roughing operations in large-scale parts.
A: Each BEYOND SVUBL2525M16 holder comes with its specific clamping screw and the corresponding Torx wrench.
Grade Tip: Pair with BEYOND BY815 for high-speed steel turning or BYM25 for heat-resistant aerospace alloys.
Equivalent Models: Sandvik SVUBL-2525M16, Kennametal SVUBL2525M16, Iscar SVUBL-2525-M16.
Troubleshooting: If tool chatter occurs, ensure tool overhang is minimal (less than 3x shank height) and verify spindle alignment.
Workpiece Material Matrix: P (Steel) ●●● | M (Stainless) ●●● | K (Cast Iron) ●●○ | N (Non-Ferrous) ●●●
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.